Answer. C the answer would be peristalsis because it acts as is a series of wave like muscle contractions.
The answer to 23 is, exercise helps by reducing the the chances of heart disease, improve daily living and sports because of less fatigue (tiredness), and decrease the changes of getting sick. Sorry I don't know the answers to any of the others
Answer:
Competition on the same receptor binding site
Explanation:
Adenosine is a neuromodulator or chemical in nervous system that makes humans feel tired while caffeine act as adenosine antagonist of adenosine blocker that makes human feel fresh.
Adenosine and caffeine both binds to the same receptor and compete for the same binding site. When adenosine binds to its receptors, the neural activity slows down but when caffeine binds to the same receptor, it do not allow adenosine to bind the same receptor and do not slows down the neural activity.
Hence, the correct answer is "Competition on the same receptor binding site".
It could be D or C I believe
Endocrine gives the correspondence through hormones; secrete their hormones directly into the bloodstream and uses blood vessels as information channels. ... Theendocrine and integumentary systems correlate with the sense organs, which react to heat, cold, vibration, texture, and pressure.
