Human Body

206

The skeleton supports the body and protects the organs: from the tiny stirrup bone in the ear to the sturdy thigh bone.

💡 Did you know? Babies are born with about 300 bones: many later fuse together.

pancreas

The pancreas lies behind the stomach and regulates blood sugar with the hormone insulin.

💡 Did you know? If insulin is missing or ineffective, diabetes results.

O negative

Blood groups decide which blood is compatible: transfusing the wrong type makes it clump dangerously.

💡 Did you know? Type O-negative blood is compatible with almost any recipient.

skin

The skin covers the whole body, guards against germs and cold, and is also our largest sensory organ.

💡 Did you know? An adult's skin weighs several kilograms.

32

The adult set of teeth has incisors, canines, premolars and molars: each with its own job in chewing.

💡 Did you know? The four wisdom teeth often erupt only in adulthood.

heart

The fist-sized heart is a tireless muscle that drives blood through a network of vessels thousands of kilometres long.

💡 Did you know? The heart beats about 100,000 times a day.

two

In the lungs, breathing takes oxygen into the blood and releases carbon dioxide.

💡 Did you know? The left lung is a little smaller: it makes room for the heart.

oxygen

Red blood cells carry oxygen from the lungs to every single cell in the body.

💡 Did you know? The red blood pigment haemoglobin binds the oxygen.

brain

The brain controls thought, feeling and every movement: through billions of interconnected nerve cells.

💡 Did you know? The brain uses about a fifth of our energy.

deoxyribonucleic acid

DNA is the blueprint of life: a full copy sits in almost every cell of the body.

💡 Did you know? DNA stores genetic information in four 'letters' (A, T, G, C).