How do the muscles help in thermoregulation? Muscles produce oil that burns in the presence of oxygen.
O Muscles undergo a chemical reaction that absorbs heat.
Muscles break down carbon dioxide, producing heat.
Muscles contract rapidly, producing heat.

Epinephrine is a hormone released from the adrenal gland of the body, most often in a stressful situation. it is known as the "fight-or-flight" hormone. one way that it causes a response in the body is to activate receptors on muscle cells. where are these cellular receptors located? a. on the cell membrane b. in the nucleus c. on the cell wall d. around the mitochondria

The nervous system interacts with the endocrine system by a. using hormones as connections b. sending nerve impulses directly to glands c. using neuroendocrine cells as connections d. sending neurotransmitters directly to neurons

9. the history of life on earth is recorded in