The respiratory system. It's a sheet of muscle below the lungs, that contracts to force air into the body.
They belong to the nervous system
The kidneys belong to the excretory system.
Veins belong to the circulatory system, because they transport blood there for they belong to the circulatory system.
The eyes belong to the Nervous system.
Arteries and veins belong to the cardiovascular system.
The lungs belong to the Respiratory System.
Livers of all animals belong to the digestive system.
what part of of organ system that the skin belong
The digestive system.
The diaphragam is the part of your body that your lungs rest on. For example, when it is said that 'the wind was knocked out of me', it is because the person was hit in the diaphragam. This thing helps the lungs move up and down respectively.
Mixed Economy
Tendons belong to the musculoskeletal system in the human body.