Human Body Systems

Movement of digested nutrients through the intestinal wall into the body.

Protection that develops when the body's own immune system produces antibodies and memory cells.

The body's specific defence system that develops after exposure to pathogens.

An endocrine gland located above each kidney that produces hormones involved in the stress response.

Tiny air sacs in the lungs where oxygen and carbon dioxide are exchanged.

An enzyme in saliva that begins the digestion of starch.

A protein produced by certain white blood cells that helps destroy pathogens.

(ADH)– A hormone that helps the kidneys conserve water and maintain water balance.

The largest artery in the body, carrying oxygen-rich blood from the left ventricle to the body.

A blood vessel that carries blood away from the heart.