| A | B |
|---|
| Skeletal | provides internal support, protects organs, produces blood cells and stores calcium |
| Muscular | moves bones and builds organs |
| Digestive | breaks down food and absorbs nutrients |
| Immune | produces fluids with cells that fight diseases |
| Endocrine | secretes hormones that control bodily functions |
| Nervous | coordinates voluntary and involuntary body actions and monitors the environment |
| Cardiovascular | transports oxygen, nutrients, gases, hormones, and chemical wastes around the body |
| Respiratory | takes in oxygen and removes carbon dioxide and water |
| Reproductive | produces gametes and develops offspring |
| Integumentary | provides external protection from the environment |
| Excretory | removes cellular and liquid waste |
