As the two anatomical divisions of the adrenal gland, the adrenal cortex and adrenal medulla share a common feature in that both:A.synthesize steroid hormones.B.release signaling molecules into lymph vessels.C.regulate the synthesis of red blood cells.D.secrete hormones that alter blood pressure.

The common feature that both the adrenal cortex and adrenal medulla share is D. They secrete hormones that alter blood pressure.

Here's why:

A. Only the adrenal cortex synthesizes steroid hormones. The adrenal medulla synthesizes catecholamines, like adrenaline and noradrenaline, which are not steroid hormones.

B. Both the adrenal cortex and adrenal medulla release their hormones directly into the bloodstream, not into lymph vessels.

C. Neither the adrenal cortex nor the adrenal medulla regulate the synthesis of red blood cells. This is primarily done by the kidneys, which release erythropoietin in response to low oxygen levels.

D. Both the adrenal cortex and adrenal medulla secrete hormones that can alter blood pressure. The adrenal cortex does this through the release of aldosterone, a hormone that increases blood volume and thus increases blood pressure. The adrenal medulla releases adrenaline and noradrenaline, which increase heart rate and constrict blood vessels, thereby increasing blood pressure.