🧠 The Human Body Quiz

The clavicle is one of the most commonly broken bones in the body, and it acts as a strut holding the shoulder away from the chest.

The aorta arches up from the left ventricle and then runs down through the chest and abdomen, supplying oxygen-rich blood to the whole body.

The patella is a sesamoid bone embedded in a tendon, helping the thigh muscles straighten the leg more efficiently.

The oesophagus moves food to the stomach using wave-like muscle contractions called peristalsis, so you can swallow even while upside down.

Red blood cells carry oxygen using haemoglobin, the iron-rich protein that also gives blood its red colour.

The gallbladder stores and concentrates bile made by the liver, releasing it to help digest fats.

When the diaphragm contracts it flattens and pulls downwards, enlarging the chest cavity so air rushes into the lungs.

Melanin is made by cells called melanocytes, and the amount and type produced determine the shade of skin, hair and eyes.

The pylorus controls how quickly partly digested food leaves the stomach, and its name comes from the Greek for 'gatekeeper'.

The calcaneus is the largest bone in the foot, and the Achilles tendon is the thickest and strongest tendon in the body.