Digestive system

3 most important features are mouth, stomach, and small intestine. It works with the circulatory system.

Circulatory system

The 3 important features are the heart, blood vessels and blood. The circulatory system works with the respiratory system by delivering deoxygenated blood to the lungs were it picks up oxygen to carry it to the cells where it removes carbon dioxide and waste.

Endocrine system

It's 3 features are producing hormones, releasing them to the bloodstream and moods. This system works with every part of your body to make it functional.

Musculoskeletal system

Basically it is your bones. And. It works with the nervous system. The nervous system is like the bones brain to make it move.

Nervous system

Motor output, sensory input, and, information processimg. It also works with every system and has multiple functions.

Immune system

Self-recognition, memory, and specificity. IT works with the circulatory system transporting immune cells throughout the body.

Reproductive system

Production of gametes, transporting gametes to the fertile zone and nurture of the fetus. It works with the endocrine system because it relies on the hormones to be produced.