Both adrenaline and cortisol are secreted in
response to stress. Which of the following
statements is true for both of these hormones ?
(a) They act to increase blood glucose
(b) They are secreted by the adrenal cortex
(c) Their secretion is stimulated by adrenocor-
ticotropin
(d) They are secreted into the blood within
seconds of the onset of stress
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Answer:
they are secreted by the adrenal cortex
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Both adrenaline and cortisol are secreted in response to stress as they act to increase blood glucose.
Option (a).
Explanation:
- The pituitary gland generates many hormones including adrenocorticotropic hormone (ACTH).
- ACTH excites two different kinds of hormones, which is known as cortisol and adrenaline, also called epinephrine, from the surrounding glands.
- Such hormones contribute to stress and stimulate the immune system.
- Adrenocorticotropic hormone is a polypeptide hormone.
- ACTH is an essential component of the hypothalamic-hypophysial-adrenal axis and is often generated to resolve biological stress.
- When the level of ACTH is low, the hypothalamus releases CRH(Corticotropin-releasing hormone) which was a key to stress hormone and act as many areas on the brain.
- Then, it trigger the pitutary gland to secrete ACTH.
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