What controls the functions of thirst metabolism endocrine activity and temperature control?

What came first egg or chicken? and is tomato a vegetable or a fruit?

Which is an example of a population?

An organ system consists of a group of organs that performs specific functions necessary for the survival of an organism. humans have eleven different organ systems: integumentary, skeletal, muscular, nervous, endocrine, circulatory, lymphatic, respiratory, digestive, urinary, and reproductive. discuss the function of neurons, the brain and the spinal cord within the human nervous system while explaining the interrelationship of each organ.