1
Provides protection from injury, fluid loss and physical infection
2
Allows the body to make young ones (offspring)
3
Transports oxygen, nutrients, and other substances to the body
4
Moves fresh air into your body while removing waste gases
5
Produces hormones that are released directly into the bloodstream
6
Breaks down food into smaller food nutrients
7
Helps the body fight infection, kill germs and bacteria
8
Removes waste materials (e.g., urine) from the body
9
Helps the body to move
10
Protects internal organs and gives the body shape
11
Transports electrical messages (impulses) around the body
12
Defends against microbial pathogens and other diseases