<span>There are many ways our body sends messages in order to help regulate bodily function, like mood, body heat, and so forth. One way our body communicates is through the endocrine system. This sends chemical messengers in the form of molecules like the ones in the picture through our bloodstream to perform specific functions.</span>
Answer:
Muscles move body parts by contracting and then relaxing. Muscles can pull bones, but they can't push them back to the original position. So they work in pairs of flexors and extensors. The flexor contracts to bend a limb at a joint.
Explanation:
check on little Darryl of coarse
The leading cause of death for men and women is: heart disease.
