The excretory system is responsible for eliminating liquid and gaseous wastes.
The endocrine system is responsible for making hormones.
The respiratory system is responsible for bringing in oxygen and removing carbon dioxide.
The muscular system is responsible for allowing organisms to perform locomotion.
The main function of the circulatory system is to transport materials within the body.
The first line of defense against invasive organisms is the integumentary system.
Just did that so i can get better ranks and a badge lol