AP BIOLOGY

ANIMAL PHYSIOLOGY

CHEMICAL SIGNALS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
COMPLETE:When ACTH arrives at ____ it stimulates the secretion of ____
A
the adrenal cortex / corticosteroids
B
the adrenal medulla / corticosteroids
C
the adrenal cortex / glucose
D
the adrenal medulla/glucose
Explanation: 

Detailed explanation-1: -The hypothalamus produces corticotropin-releasing hormone (CRH) that stimulates the pituitary gland to secrete adrenocorticotropin hormone (ACTH). ACTH then stimulates the adrenal glands to make and release cortisol hormones into the blood.

Detailed explanation-2: -ACTH acts on the adrenal cortex to release cortisol and androgens. The increase in cortisol provides a negative feedback system to decrease the amount of CRH released from the hypothalamus.

Detailed explanation-3: -When cortisol levels are low, your hypothalamus releases corticotrophin-releasing hormone (CRH). CRH stimulates your anterior pituitary lobe to release ACTH. ACTH then triggers your adrenal glands, specifically your adrenal cortex, to release cortisol and androgens.

Detailed explanation-4: -Accordingly, in patients with AECOPD receiving systemic corticosteroids the presence of adrenal insufficiency should be considered. Physiologically, the hypothalamus secretes corticotropin releasing hormone (CRH), which stimulates the release of adrenocorticotropic hormone (ACTH) from the pituitary gland.

There is 1 question to complete.