Refer to the figure showing the adrenal gland. Based on the figure, which structure(s) is/are most directly involved in raising your blood pressure in response to stress?
A) Structure 1 only
B) Structure 2 only
C) Structure 3 only
D) Structures 1 and 2
E) Structures 2 and 3

Question

Refer to the figure showing the adrenal gland.  Based on the figure, which structure(s) is/are most directly involved in raising your blood pressure in response to stress?
A) Structure 1 only 
B) Structure 2 only 
C) Structure 3 only 
D) Structures 1 and 2 
E) Structures 2 and 3

Quizplus · Accepted Answer

Structures 1 (adrenal cortex) and 2 (adrenal medulla) are both involved in raising blood pressure in response to stress. The adrenal cortex secretes aldosterone, which increases sodium reabsorption in the kidneys, leading to an increase in blood volume and blood pressure. The adrenal medulla secretes epinephrine and norepinephrine, which cause vasoconstriction, increasing blood pressure. Therefore, structures 1 and 2 together are most directly involved in raising blood pressure in response to stress.

Refer to the Figure Showing the Adrenal Gland