Unit 4: Excretion and Waste Management

Learn about homeostasis and how the body regulates temperature, blood pressure, blood pH and blood sugar.

Learn about organ transplantation - what it is, how it can save lives, how your immune system responds, and how the matching process works.

Learn how and where osmosis takes place in the digestive system and excretory system and the role of osmosis in kidney dialysis.

Why does drinking too much alcohol make people feel so bad? Read about four theories.