You brought the equipment.
A quick look at the body you use every day.
Ten questions, with the answers explained. Try them in your head, then open each answer when you're ready.
Play this quiz →QUESTION 1 / 10
Which organ pumps blood around the body?
- Liver
- Heart
- Stomach
- Lung
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Heart
The heart's muscular contractions circulate blood through the body.
QUESTION 2 / 10
Which organs carry out most gas exchange with the air you breathe?
- Lungs
- Kidneys
- Spleen
- Intestines
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Lungs
In the lungs, oxygen enters the blood and carbon dioxide leaves it.
QUESTION 3 / 10
What connects muscle to bone?
- Ligament
- Enamel
- Cartilage only
- Tendon
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Tendon
Tendons connect muscles to bones. Ligaments generally connect bones to other bones.
QUESTION 4 / 10
What is the largest organ of the human body?
- Heart
- Liver
- Brain
- Skin
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Skin
Skin covers the body's surface and is its largest organ.
QUESTION 5 / 10
Which part of the eye controls how much light enters by changing pupil size?
- Cornea
- Retina
- Iris
- Optic nerve
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Iris
The iris adjusts the opening of the pupil to regulate incoming light.
QUESTION 6 / 10
What is the hard outer layer of a tooth's crown called?
- Pulp
- Dentin
- Enamel
- Gum
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Enamel
Enamel forms the hard outer covering over the visible crown of a tooth.
QUESTION 7 / 10
Which blood cells are chiefly responsible for carrying oxygen?
- Red blood cells
- Skin cells
- Most white blood cells
- Platelets
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Red blood cells
Red blood cells contain hemoglobin, which binds and transports oxygen.
QUESTION 8 / 10
Which organs filter blood to produce urine?
- Kidneys
- Pancreas
- Gallbladder
- Lungs
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Kidneys
The kidneys filter blood and regulate water and dissolved substances as they produce urine.
QUESTION 9 / 10
What protects the brain inside the head?
- Pelvis
- Sternum
- Skull
- Kneecap
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Skull
The skull surrounds and protects the brain.
QUESTION 10 / 10
Which joint joins the upper arm to the forearm?
- Ankle
- Hip
- Knee
- Elbow
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Elbow
The elbow connects the upper arm bone with the bones of the forearm.