Excretory System

Excretory System

Your excretory system removes waste from your body in order to help it maintain homeostasis. Your body has a number of different waste systems. In your digestive system, food that is left undigested is excreted from the end of your large intestine. When you exhale, you also excrete carbon dioxide, a waste product of respiration. Your skin excretes extra salt, water, and other substances through your sweat.

Urinary System:

The urinary system filters your blood and gets rid of excess water, salt, and minerals. The kidneys are the main organs of the urinary system. Your blood constantly gets filtered by millions of tiny filtration units in the kidney called nephrons. Any liquid filtered out by the kidneys is collected and funnelled into the ureter, which is a tube that leads from the kidney to the bladder, where urine is stored. The bladder stretches to hold urine until it leaves the body through a tube called the urethra.