A | B |
It carries messages in your body | Nervous sytem |
It has 206 bones | Skeletal system |
It is made of muscles that are attached to and move the bones | Muscular system |
It protects and fights against disease | Immune system |
It includes skin, hair, and nails | Integumentary system |
It produces off-spring | Reproductive system |
It produces chemicals that regulate and control body functions. | Endocrine systems |
It turns food into nutrients | Digestive system |
It carries oxygen into the lungs. | Respiratory system |
It moves waste materials out of the body. | Excretory system |
It uses blood and blood vessels to move oxygen and nutrients | Circulatory system |