The study of the functions of a structure is known as physiology.
Answer:
D
life, liberty and the pursuit of happiness.
D
what are the answer choices?
Renin. Renin is a hormone that is produced by the kidneys and it acts to elevate the blood pressure. ... Angiotensin II causes blood vessels to constrict, which raises the blood pressure. It also causes the kidneys to retain more sodium and water, which raises the volume of the blood