Relaxation of the diaphragm muscle plays a major role in expanding the lungs.
True
False

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.

The term equestrian relates to which animal? bulls cows horses pigs

What material did the moon come from?