This system takes in oxygen to the body and removes carbon dioxide from the body.

Respiratory System

(Under normal situation)

Works with the circulatory system by providing oxygen that's carried by red blood cells to all the parts of the body and removes carbon dioxide and water that heart cells produce as a waste product.

Immune System: without oxygen, white blood cells wouldn't be able to function and protect you because you ain't breathing like you should smh

Endocrine: adrenaline released by this system helps stimulate your respiratory system.