• 191 questions

Anatomy Trivia Questions and Answers for the Whole Body

Ten rounds on the human body, from the stirrup bone of the ear to 86 billion neurons.

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From the top down, how many cervical, thoracic and lumbar vertebrae does the spine have?

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All 191 questions with answers

Skeleton 20

  • A baby is born with around 270 bones, and some fuse together during growth. About how many does an adult have? Answer: 206. Source: NIH SEER Training: Divisions of the Skeleton; Wikipedia: Human skeleton; Wikipedia: Accessory bone
  • A tendon joins muscle to bone. What does a ligament join? Answer: Bone to bone. Source: Wikipedia: Ligament
  • Alone among the body's long bones, the clavicle lies in which direction? Answer: Horizontally. Source: Wikipedia: Clavicle
  • Bumping your "funny bone" does not hit a bone at all. What does it hit? Answer: A nerve. Source: Wikipedia: Ulnar nerve
  • Each finger has three bones. How many does the thumb have? Answer: Two. Source: Wikipedia: Phalanx bone
  • The first vertebra of the neck, which supports the skull, is named after which figure of Greek myth? Answer: Atlas. Source: Wikipedia: Atlas (anatomy)
  • From the top down, how many cervical, thoracic and lumbar vertebrae does the spine have? Answer: 7, 12 and 5. Source: Wikipedia: Vertebral column
  • The Greek word for which bird gave the coccyx, or tailbone, its name? Answer: The cuckoo. Source: Wikipedia: Coccyx
  • The hip and the shoulder are both examples of which type of joint? Answer: Ball-and-socket. Source: Wikipedia: Ball-and-socket joint
  • How many carpal bones make up each wrist? Answer: Eight. Source: Wikipedia: Carpal bones; Wikipedia: Tarsus (skeleton); Wikipedia: Calcaneus
  • The human skull is generally counted as how many bones? Answer: 22. Source: Wikipedia: Skull
  • The last two pairs of ribs are called floating ribs. How many pairs of ribs are there in all? Answer: 12. Source: Wikipedia: Rib cage
  • The lightest and smallest bone of the body is shaped like a stirrup. Where is it? Answer: In the middle ear. Source: Wikipedia: Stapes
  • The sternum is a flat, long bone, shaped roughly like a necktie. What is it usually called? Answer: The breastbone. Source: Wikipedia: Sternum
  • The thigh holds a single bone, the longest in the body. What is it called? Answer: The femur. Source: Wikipedia: Femur
  • What is the everyday name for the patella? Answer: The kneecap. Source: Wikipedia: Patella
  • What is the only bone of the skull that can move? Answer: The lower jaw. Source: Wikipedia: Mandible
  • What is the term for the making of new blood cells, which goes on in the bone marrow? Answer: Haematopoiesis. Source: Wikipedia: Bone marrow
  • Which bone is commonly called the shinbone? Answer: The tibia. Source: Wikipedia: Tibia
  • Which horseshoe-shaped bone in the neck is the only bone in the body not connected to any other bone? Answer: The hyoid. Source: Wikipedia: Hyoid bone

Muscles 21

  • The body has three types of muscle tissue. Skeletal and smooth are two. What is the third? Answer: Cardiac. Source: NIH SEER Training: Muscle Tissue; Wikipedia: Muscle; Wikipedia: Cardiac muscle
  • The body's smallest skeletal muscle is just over a millimeter long. Which tiny bone does it steady? Answer: The stapes. Source: Wikipedia: Stapedius muscle
  • The deltoid muscle is named for its likeness to a Greek capital letter. Where is the muscle? Answer: On the shoulder. Source: Wikipedia: Deltoid muscle
  • Few muscles of its group are as strong as the masseter. What job does it do? Answer: Chewing. Source: NIH SEER Training: Muscles of the Head and Neck; Wikipedia: Masseter muscle
  • How many heads does the biceps have? Answer: Two. Source: NIH SEER Training: Muscle Groups; Wikipedia: Biceps
  • How many muscles does the human tongue have? Answer: Eight. Source: Wikipedia: Tongue
  • How many muscles make up the hamstrings at the back of each thigh? Answer: Three. Source: Wikipedia: Hamstring
  • How many muscles make up the rotator cuff of the shoulder? Answer: Four. Source: Wikipedia: Rotator cuff
  • The largest muscle in the body gives the buttocks their shape. What is it called? Answer: The gluteus maximus. Source: Wikipedia: Gluteus maximus
  • The longest muscle in the body is the sartorius. Where does it run? Answer: Along the whole thigh. Source: Wikipedia: Sartorius muscle
  • The name gastrocnemius comes from Greek words meaning "stomach of the leg". Which bulge does the muscle form? Answer: The calf. Source: Wikipedia: Gastrocnemius muscle
  • The pectoralis major is the main muscle of which part of the body? Answer: The chest. Source: NIH SEER Training: Muscle Groups; Wikipedia: Pectoralis major
  • The quadriceps is a group of four muscles. Where is it? Answer: On the thigh's front. Source: Wikipedia: Quadriceps
  • Smooth muscle works without conscious control. Where is it found? Answer: Inside the walls of hollow organs. Source: NIH SEER Training: Muscle Types; Wikipedia: Smooth muscle
  • What does the Latin name latissimus dorsi mean? Answer: Broadest of the back. Source: Wikipedia: Latissimus dorsi muscle
  • Which dome-shaped sheet of muscle separates the chest from the abdomen? Answer: The diaphragm. Source: NIH SEER Training: Muscles of the Trunk; Wikipedia: Thoracic diaphragm
  • Which muscle on the rear side of the upper arm straightens the elbow? Answer: The triceps. Source: Wikipedia: Triceps
  • Which paired muscle of the abdomen is informally called the six-pack? Answer: The rectus abdominis. Source: Wikipedia: Rectus abdominis muscle
  • Which tendon, the thickest in the body, attaches the calf muscles to the heel bone? Answer: The Achilles tendon. Source: Wikipedia: Achilles tendon
  • Which two proteins form the thick and the thin filaments of a sarcomere? Answer: Myosin and actin. Source: Wikipedia: Sarcomere
  • The word muscle comes from the Latin musculus. Which small animal does that word name? Answer: A mouse. Source: Wikipedia: Muscle

Heart and blood 21

  • A group of pacemaker cells sets the rhythm of the heartbeat. Where in the heart are they? Answer: In the sinoatrial node. Source: NIH SEER Training: Physiology of the Heart; Wikipedia: Heart
  • Blood leaves the heart through arteries. Which vessels carry it back toward the heart? Answer: Veins. Source: NIH SEER Training: Classification and Structure of Blood Vessels; Wikipedia: Vein; Wikipedia: Artery
  • The human heart has upper chambers called atria and lower ones called ventricles. How many chambers is that in all? Answer: Four. Source: NIH SEER Training: Structure of the Heart; Wikipedia: Heart
  • The jugular veins bring blood back to the heart from which part of the body? Answer: The head. Source: Wikipedia: Jugular vein; Wikipedia: Carotid artery
  • The mitral valve of the heart is named after the headdress of which kind of person? Answer: A bishop. Source: Wikipedia: Mitral valve
  • Most arteries carry blood rich in oxygen. Which artery carries blood that has given its oxygen up? Answer: The pulmonary artery. Source: Wikipedia: Pulmonary artery; Wikipedia: Pulmonary vein
  • The two large veins that return blood from the body to the heart share a Latin name meaning "hollow veins". What is it? Answer: Venae cavae. Source: Wikipedia: Venae cavae
  • What does a mature human red blood cell lack that most cells of the body have? Answer: A nucleus. Source: Wikipedia: Red blood cell
  • What is the double-walled sac that contains the heart called? Answer: The pericardium. Source: Wikipedia: Pericardium
  • What is the liquid part of blood called? Answer: Plasma. Source: Wikipedia: Blood plasma
  • Where in the body are red blood cells made? Answer: In the bone marrow. Source: NIH SEER Training: Introduction to the Skeletal System; Wikipedia: Red blood cell
  • Which artery, the largest in the body, leaves the left ventricle of the heart? Answer: The aorta. Source: NIH SEER Training: Circulatory Pathways; Wikipedia: Aorta
  • Which blood cells are part of the immune system and protect the body against infection? Answer: White blood cells. Source: Wikipedia: White blood cell
  • Which blood vessels are the smallest in the body, with walls a single layer of cells thick? Answer: Capillaries. Source: NIH SEER Training: Classification and Structure of Blood Vessels; Wikipedia: Capillary
  • Which chamber of the heart pumps blood out to the whole body through the aorta? Answer: The left ventricle. Source: NIH SEER Training: Circulatory Pathways; Wikipedia: Ventricle (heart)
  • Which English physician described the circulation of the blood in De Motu Cordis, published in 1628? Answer: William Harvey. Source: Wikipedia: William Harvey
  • Which iron-containing substance gives red blood cells their color and carries oxygen? Answer: Haemoglobin. Source: Wikipedia: Red blood cell
  • Which organ acts mainly as a blood filter, removing old red blood cells and recycling their iron? Answer: The spleen. Source: NIH SEER Training: Spleen; Wikipedia: Spleen
  • Which part of the blood reacts to a damaged vessel by starting a clot? Answer: Platelets. Source: Wikipedia: Platelet
  • Which vessels feed the heart's own muscle with blood? Answer: The coronary arteries. Source: NIH SEER Training: Structure of the Heart; Wikipedia: Coronary circulation
  • Who discovered the ABO blood types in 1901? Answer: Karl Landsteiner. Source: Wikipedia: ABO blood group system

Lungs and breathing 15

  • A hiccup is an involuntary contraction of which muscle? Answer: The diaphragm. Source: Wikipedia: Hiccup
  • The Adam's apple is formed by the angle of which cartilage? Answer: The thyroid cartilage. Source: NIH SEER Training: Larynx and Trachea; Wikipedia: Adam's apple
  • How many lobes do the right and the left lung have? Answer: Three and two. Source: Wikipedia: Lung
  • In which tiny air sacs of the lungs is oxygen exchanged for carbon dioxide? Answer: The alveoli. Source: Wikipedia: Lung
  • What are the two fluid-filled sacs that surround the lungs called? Answer: The pleurae. Source: NIH SEER Training: Bronchi, Bronchial Tree, and Lungs; Wikipedia: Pulmonary pleurae; Wikipedia: Lung
  • What does the inside of the nose do to air on its way to the lungs? Answer: Warms, moistens and filters it. Source: Wikipedia: Nasal cavity
  • What is the everyday name for the trachea? Answer: The windpipe. Source: NIH SEER Training: Larynx and Trachea; Wikipedia: Trachea
  • What is the larynx commonly called? Answer: The voice box. Source: NIH SEER Training: Larynx and Trachea; Wikipedia: Larynx
  • Where are the intercostal muscles, which make the chest wall move as we breathe? Answer: Between the ribs. Source: NIH SEER Training: Muscles of the Trunk; Wikipedia: Intercostal muscles; Wikipedia: Rib
  • Which folds in the throat are open for breathing and vibrate for speech and singing? Answer: The vocal cords. Source: NIH SEER Training: Larynx and Trachea; Wikipedia: Vocal cords
  • Which leaf-shaped flap in the throat stops food and water from entering the windpipe? Answer: The epiglottis. Source: NIH SEER Training: Larynx and Trachea; Wikipedia: Epiglottis
  • Which part of the throat lies behind the mouth and the nasal cavity? Answer: The pharynx. Source: Wikipedia: Pharynx; Wikipedia: Larynx
  • Which tiny hair-like structures line the airways and sweep mucus away from the lungs? Answer: Cilia. Source: Wikipedia: Cilium
  • Which waste gas does the body get rid of each time it breathes out? Answer: Carbon dioxide. Source: Wikipedia: Breathing
  • The windpipe divides into two main bronchi. How does the right one compare with the left? Answer: It is shorter, wider and more upright. Source: Wikipedia: Bronchus

Brain and nerves 20

  • A 16th-century anatomist named the hippocampus of the brain after which sea creature? Answer: The seahorse. Source: Wikipedia: Hippocampus
  • The brain is one half of the central nervous system. What is the other half? Answer: The spinal cord. Source: NIH SEER Training: Organization of the Nervous System; Wikipedia: Central nervous system; Wikipedia: Spinal cord
  • The brainstem has three parts. The midbrain and the pons are two of them. What is the third? Answer: The medulla. Source: NIH SEER Training: The Central Nervous System; Wikipedia: Brainstem; Wikipedia: Medulla oblongata
  • Broca's area of the brain is linked to which ability? Answer: Producing speech. Source: Wikipedia: Broca's area
  • How many membranes, called the meninges, wrap the brain? Answer: Three. Source: NIH SEER Training: The Central Nervous System; Wikipedia: Meninges
  • How many pairs of cranial nerves are there by the usual count? Answer: 12. Source: NIH SEER Training: The Peripheral Nervous System; Wikipedia: Cranial nerves
  • How many pairs of spinal nerves does the human body have? Answer: 31. Source: NIH SEER Training: The Central Nervous System; Wikipedia: Spinal nerve
  • In the human body, which single nerve is longest and widest? Answer: The sciatic nerve. Source: Wikipedia: Sciatic nerve
  • The name cerebellum is Latin for "little brain". What is its best-established job? Answer: Coordinating movement. Source: Wikipedia: Cerebellum
  • The occipital lobe handles what the eyes see. Where is it? Answer: At the head's back. Source: Wikipedia: Occipital lobe
  • Roughly how many neurons does the human brain contain? Answer: More than 86 billion. Source: Wikipedia: Human brain
  • The uppermost region of the brain is also its largest part. What is it called? Answer: The cerebrum. Source: NIH SEER Training: The Central Nervous System; Wikipedia: Cerebrum
  • The vagus nerve takes its name from a Latin word with which meaning? Answer: Wandering. Source: Wikipedia: Vagus nerve
  • What does the clear, colorless fluid around the brain and spinal cord do? Answer: It cushions them. Source: Wikipedia: Cerebrospinal fluid
  • Which almond-sized part of the brain controls body temperature, hunger and thirst? Answer: The hypothalamus. Source: Wikipedia: Hypothalamus
  • Which band of nerve fibers joins the two halves of the cerebrum, left and right? Answer: The corpus callosum. Source: NIH SEER Training: The Central Nervous System; Wikipedia: Corpus callosum
  • Which fatty substance wraps around nerve fibers and speeds up their signals? Answer: Myelin. Source: NIH SEER Training: Nerve Tissue; Wikipedia: Myelin
  • Which kind of cell has an axon and dendrites and passes signals across synapses? Answer: A neuron. Source: NIH SEER Training: Nerve Tissue; Wikipedia: Neuron
  • Which lobe of the brain is the largest? Answer: The frontal lobe. Source: Wikipedia: Frontal lobe
  • Why is the surface of the human brain folded? Answer: To fit more surface into the skull. Source: Wikipedia: Cerebral cortex

Eyes, ears and senses 21

  • The cochlea of the inner ear is involved in hearing. Which animal is it shaped like? Answer: A snail. Source: Wikipedia: Cochlea
  • The Eustachian tube links the middle ear to which other part of the body? Answer: The upper throat, behind the nose. Source: Wikipedia: Eustachian tube
  • Every eye has a blind spot. What passes through the retina at that point? Answer: The optic nerve. Source: Wikipedia: Blind spot (vision)
  • How many semicircular canals does each inner ear have? Answer: Three. Source: Wikipedia: Semicircular canals
  • How many types of cone cell does the human eye normally have for seeing color? Answer: Three. Source: Wikipedia: Cone cell
  • Light enters the eye through a clear layer at the very front. What is that layer called? Answer: The cornea. Source: Wikipedia: Cornea
  • On average, about how many taste buds does a human tongue have? Answer: 2,000 to 8,000. Source: Wikipedia: Taste bud
  • The retina has two main kinds of light-detecting cell. Which kind is responsible for nearly all night vision? Answer: Rod cells. Source: Wikipedia: Rod cell
  • Sweet, sour, salty and bitter are four of the basic tastes. What is the fifth? Answer: Umami, or savory. Source: Wikipedia: Taste bud
  • The three tiny bones of the middle ear are nicknamed the hammer, the anvil and the what? Answer: The stirrup. Source: Wikipedia: Ossicles
  • What do the lacrimal glands make? Answer: Tears. Source: Wikipedia: Lacrimal gland
  • What is the main job of the eyebrows? Answer: Keeping sweat and water out of the eyes. Source: Wikipedia: Eyebrow
  • What is the proper name for the eardrum? Answer: The tympanic membrane. Source: Wikipedia: Eardrum
  • What is the proper name for the white of the eye? Answer: The sclera. Source: Wikipedia: Sclera
  • What is the pupil of the eye? Answer: A hole. Source: Wikipedia: Pupil
  • Where is the patch of tissue that detects smells? Answer: On the nasal cavity's roof. Source: Wikipedia: Olfactory epithelium
  • Which colored ring in the eye sets how big the pupil is? Answer: The iris. Source: Wikipedia: Iris (anatomy)
  • Which light-sensitive layer lines the inside of the eye? Answer: The retina. Source: Wikipedia: Retina
  • Which sense tells you where your arms and legs are without looking? Answer: Proprioception. Source: Wikipedia: Proprioception
  • Which small pit in the center of the retina gives sharp central vision? Answer: The fovea. Source: Wikipedia: Fovea centralis
  • Who picked out umami as a taste of its own in 1908? Answer: Kikunae Ikeda. Source: Wikipedia: Umami

Digestion and teeth 18

  • The appendix is sometimes called vermiform. What does that Latin word mean? Answer: Worm-shaped. Source: Wikipedia: Appendix (anatomy)
  • How many permanent teeth does an adult usually have? Answer: 32. Source: NIH SEER Training: Mouth; Wikipedia: Human tooth
  • Human saliva is mostly made of what? Answer: Water. Source: Wikipedia: Saliva
  • Humans grow two sets of teeth. How many teeth are in the first set? Answer: 20. Source: NIH SEER Training: Mouth; Wikipedia: Human tooth
  • In order, what are the three regions of the small intestine? Answer: Duodenum, jejunum, ileum. Source: NIH SEER Training: Small and Large Intestine; Wikipedia: Small intestine
  • Swallowed food goes down a muscular tube about 25 centimeters long to reach the stomach. What is the tube called? Answer: The esophagus. Source: NIH SEER Training: Pharynx and Esophagus; Wikipedia: Esophagus
  • The uvula hangs from the soft palate at the back of the mouth. What does its Latin name mean? Answer: Little grape. Source: Wikipedia: Palatine uvula
  • What does the large intestine mainly absorb from what is left of a meal? Answer: Water and salts. Source: NIH SEER Training: Small and Large Intestine; Wikipedia: Large intestine
  • What is the name for the partly digested food that leaves the stomach? Answer: Chyme. Source: NIH SEER Training: Stomach; Wikipedia: Stomach
  • What is the name for the waves of muscle contraction that push food along the digestive tract? Answer: Peristalsis. Source: NIH SEER Training: Introduction to the Digestive System; Wikipedia: Peristalsis; Wikipedia: Esophagus
  • Which acid is found in the gastric juice of the stomach? Answer: Hydrochloric acid. Source: Wikipedia: Stomach
  • Which finger-like projections line the small intestine and increase its surface for absorbing food? Answer: Villi. Source: NIH SEER Training: Small and Large Intestine; Wikipedia: Intestinal villus
  • Which fluid, made by the liver, helps to break up the fat in food? Answer: Bile. Source: NIH SEER Training: Accessory Organs; Wikipedia: Liver
  • Which internal organ is the heaviest, and also the human body's largest gland? Answer: The liver. Source: Wikipedia: Liver
  • Which organ behind the stomach makes both digestive juice and the hormone insulin? Answer: The pancreas. Source: NIH SEER Training: Accessory Organs; Wikipedia: Pancreas
  • Which salivary glands are the largest? Answer: The parotid glands. Source: Wikipedia: Parotid gland
  • Which small pear-shaped organ under the liver stores bile? Answer: The gallbladder. Source: NIH SEER Training: Accessory Organs; Wikipedia: Gallbladder
  • Which tissue, 96 percent mineral, is harder than anything else in the human body? Answer: Tooth enamel. Source: Wikipedia: Tooth enamel

Skin, hair and nails 18

  • About how fast does a fingernail grow? Answer: About 3.5 millimeters a month. Source: Wikipedia: Nail (anatomy)
  • Cells called melanocytes make the pigment that colors skin and hair. What is the pigment? Answer: Melanin. Source: Wikipedia: Melanin; Wikipedia: Melanocyte
  • Do identical twins have identical fingerprints? Answer: No, each twin has their own. Source: Wikipedia: Fingerprint
  • The hypodermis, the layer beneath the skin, is a major store of what? Answer: Fat. Source: Wikipedia: Subcutaneous tissue
  • The navel, or belly button, is a scar. What was once attached there? Answer: The umbilical cord. Source: Wikipedia: Navel
  • The pale crescent at a fingernail's base is the lunula. What does the Latin name mean? Answer: Little moon. Source: Wikipedia: Lunula (anatomy)
  • The skin has three main layers. The epidermis is on top and the hypodermis at the bottom. What lies between them? Answer: The dermis. Source: Wikipedia: Human skin; Wikipedia: Dermis
  • Two types of melanin set the color of human hair. Eumelanin gives black or brown. What does pheomelanin give? Answer: Yellow or red. Source: Wikipedia: Human hair color
  • Ultraviolet B light lets the deeper layers of the epidermis make which vitamin? Answer: Vitamin D. Source: Wikipedia: Vitamin D
  • What are freckles? Answer: Clusters of cells rich in melanin. Source: Wikipedia: Freckle
  • What is the epidermis's outermost layer called? Answer: The stratum corneum. Source: Wikipedia: Stratum corneum; Wikipedia: Human skin
  • What is the surface area of the skin of an average adult? Answer: 1.5 to 2 square meters. Source: Wikipedia: Human skin
  • What is unusual about the supply to the epidermis, the outer layer of the skin? Answer: It has no blood supply of its own. Source: Wikipedia: Epidermis
  • What oily substance do the sebaceous glands release to lubricate hair and skin? Answer: Sebum. Source: Wikipedia: Sebaceous gland
  • Where on the body are sweat glands packed most densely? Answer: On the palms and the soles. Source: Wikipedia: Sweat gland
  • Which protein is more plentiful than any other in the body of a mammal, humans included? Answer: Collagen. Source: Wikipedia: Collagen; Wikipedia: Dermis
  • Which tiny muscles at each hair's base contract to make goose bumps? Answer: The arrector pili. Source: Wikipedia: Goose bumps
  • Which tough protein makes up hair, nails and the outer layer of the skin? Answer: Keratin. Source: Wikipedia: Keratin

Cells and DNA 18

  • About how many base pairs of DNA make up the human reference genome? Answer: 3.1 billion. Source: Wikipedia: Human genome
  • Animal tissues fall into four basic types. Connective, muscle and nervous are three. What is the fourth? Answer: Epithelial. Source: NIH SEER Training: Body Tissues; Wikipedia: Tissue (biology)
  • For decades textbooks gave the wrong human chromosome count of 48. In which year was the true number found? Answer: 1956. Source: Wikipedia: Chromosome
  • From which parent is mitochondrial DNA inherited? Answer: The mother. Source: Wikipedia: Mitochondrial DNA
  • How many chromosomes does a human egg cell or sperm cell carry? Answer: 23. Source: NIH SEER Training: Cell Function; Wikipedia: Ploidy; Wikipedia: Gamete
  • How many chromosomes does a typical human cell have? Answer: 46. Source: NIH SEER Training: Cell Function; Wikipedia: Chromosome
  • The Human Genome Project set out to read all of human DNA. In which year was it completed? Answer: 2003. Source: Wikipedia: Human Genome Project
  • Identical twins develop from how many fertilized eggs? Answer: One. Source: Wikipedia: Twin
  • The longest fiber of a human nerve cell can reach from the spine's base to the toes. About how long is that? Answer: Over a meter. Source: Wikipedia: Neuron
  • Roughly how many cells make up a typical adult human body? Answer: Around 30 trillion. Source: Wikipedia: Cell (biology)
  • What are the protective caps at the ends of chromosomes called? Answer: Telomeres. Source: Wikipedia: Telomere
  • What is a karyotype? Answer: The look of a full set of chromosomes. Source: Wikipedia: Karyotype
  • What is special about a stem cell? Answer: It can turn into various other types of cell. Source: Wikipedia: Stem cell
  • What is the single cell formed when an egg cell and a sperm cell join? Answer: A zygote. Source: Wikipedia: Zygote
  • Which human cell is one of the largest in the body and can typically be seen without a microscope? Answer: The egg cell. Source: Wikipedia: Egg cell
  • Which is the largest human chromosome? Answer: Chromosome 1. Source: Wikipedia: Chromosome 1
  • Which is the most common cell in mature bone? Answer: The osteocyte. Source: Wikipedia: Osteocyte
  • Which pair of sex chromosomes usually leads to a male body? Answer: X and Y. Source: Wikipedia: XY sex-determination system; Wikipedia: Y chromosome

Glands, kidneys and growth 19

  • From the start of which week after fertilization is a developing human called a fetus and no longer an embryo? Answer: The ninth week. Source: Wikipedia: Human development (biology); Wikipedia: Fetus
  • The hormone-making cell clusters of the pancreas are named after the German anatomist who discovered them in 1869. Who was he? Answer: Paul Langerhans. Source: Wikipedia: Pancreatic islets; Wikipedia: Insulin
  • How many blood vessels does a human umbilical cord normally contain? Answer: Three. Source: Wikipedia: Umbilical cord
  • How many parathyroid glands do most people have? Answer: Four. Source: NIH SEER Training: Thyroid and Parathyroid Glands; Wikipedia: Parathyroid gland
  • The pineal gland makes melatonin, a hormone that shapes sleep patterns. What is the gland named after? Answer: A pine cone. Source: Wikipedia: Pineal gland
  • Through which tubes does urine pass from each kidney down to the bladder? Answer: The ureters. Source: NIH SEER Training: Components of the Urinary System; Wikipedia: Ureter; Wikipedia: Urinary bladder
  • What do endocrine glands release straight into the bloodstream? Answer: Hormones. Source: NIH SEER Training: Introduction to the Endocrine System; Wikipedia: Endocrine system; Wikipedia: Hormone
  • What do the two bean-shaped kidneys do? Answer: Filter the blood to make urine. Source: NIH SEER Training: Kidneys; Wikipedia: Kidney
  • What is the name for the process in which the body of a child matures into the body of an adult? Answer: Puberty. Source: Wikipedia: Puberty
  • What is the soft spot on a baby's head properly called? Answer: A fontanelle. Source: Wikipedia: Fontanelle
  • What is the working unit of the kidney called? Answer: The nephron. Source: NIH SEER Training: Kidneys; Wikipedia: Kidney
  • Where are the adrenal glands? Answer: Above the kidneys. Source: NIH SEER Training: Adrenal Gland; Wikipedia: Adrenal gland; Wikipedia: Adrenaline
  • Where in a long bone such as the femur does growth in length take place? Answer: At the growth plates near each end. Source: NIH SEER Training: Bone Development and Growth; Wikipedia: Epiphyseal plate
  • Which butterfly-shaped gland sits in the neck? Answer: The thyroid. Source: Wikipedia: Thyroid
  • Which gland at the base of the brain, about the size of a kidney bean, releases growth hormone? Answer: The pituitary gland. Source: Wikipedia: Pituitary gland; Wikipedia: Growth hormone
  • Which gland in the chest grows until puberty and then shrinks? Answer: The thymus. Source: NIH SEER Training: Thymus; Wikipedia: Thymus
  • Which organ links a fetus to its mother and passes food and oxygen across? Answer: The placenta. Source: NIH SEER Training: Other Endocrine Glands; Wikipedia: Placenta
  • Wisdom teeth are the last teeth to come through. Which kind of tooth are they? Answer: Third molars. Source: Wikipedia: Wisdom tooth
  • The word infant comes from the Latin infans. What does it literally mean? Answer: Unspeaking. Source: Wikipedia: Infant

How it works

Which bone is shaped like a stirrup, and which nerve is named for wandering? These 191 human anatomy trivia questions and answers run in ten rounds, system by system. Tap a choice to check it. A quiz, not medical information.

Read the full guide

Pick a body system, then a level

Set Start from to one of ten rounds: Skeleton, Muscles, Heart and blood, Lungs and breathing, Brain and nerves, Eyes, ears and senses, Digestion and teeth, Skin, hair and nails, Cells and DNA or Glands, kidneys and growth. Show only keeps Easy, 99 on everyday parts such as the kneecap, or Hard, the 92 hardest anatomy questions: the sinoatrial node, the arrector pili, the islets of Langerhans.

Read it out or put it on paper

Host a round fills the screen with one question, waits for Show the answer, and tallies two to six teams. A study group that wants human body trivia questions with answers on paper can play a set of the chosen system and press Print, then tick With answer key for the reasons.

  • The word origins stick best: the coccyx is named for a cuckoo, the hippocampus for a seahorse, the uvula for a little grape.
  • Learning the names for a course? Work through one system a day, then open Missed to meet the ones that did not stick.

Questions and answers

Is this medical information?

No. It is a quiz of names, counts, places and jobs in the body, written for game nights and revision. It gives no health advice, describes no symptoms and lists no test values.

How hard is the Hard level?

It asks for the names a first anatomy course teaches: the atlas vertebra, the mitral valve, the three meninges, the fovea, the jejunum. Easy stays with parts most people can point to, such as the shinbone, the iris and the epiglottis.

How is this different from the science trivia for kids?

That page has a short body round written for children. This pack is for adults and students: ten systems, a Hard level and the Latin and Greek behind the names. The biology pack leaves the human body out, so nothing repeats between them.

Where do the answers come from?

Every answer and every fact in its reason was read on Wikipedia on September 19, 2026, and 55 answers were read again on the National Cancer Institute's SEER Training pages, linked under those questions. Left out as unsettled: the strongest bone and the 'master gland'.

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