It relates to the meaning of the pores of skin because it lets in and out only certain things.
I hope this helps, Sweetie.
Answer:
pancreas
Explanation:
beta cells of the pancreas produce insulin
So they respond by releasing hormones that stimulate the body to retain sodium and water. Blood vessels fill with additional fluid, and blood pressure goes up. The narrowing in one or both renal arteries is most often caused by atherosclerosis, or hardening of the arteries.