Which of the following is most likely to be observed by a physiologist? a.) atp is made up of adenine, ribose, and a phosphate chain. b.) bone is a rigid connective tissue. c.) hormones control the rates of reactions and regulate blood pressure. d.) the nervous system is composed of neural tissue.

within 30 of the equator hope this

when you breathe in, or inhale, your diaphragm contracts (tightens) and moves downward. this increases the space in your chest cavity, into which your lungs expand. the intercostal muscles between your ribs also enlarge the chest cavity. they contract to pull your rib cage both upward and outward when you inhale.