Hu-Adrenal Gland

Question 1

Mineralcorticoids, glucocorticoids, and androgens are secreted by what portions of the adrenal gland?

Answer 1

All are part of the adrenal cortex
Mineralcorticoids: Zona glomerulosa
Glucocorticoids: Zona fasciculata
Androgens: Zona reticularis

Question 2

Where is Aldosterone is synthesized?

Answer 2

Zona Glomerulosa of the adrenal cortex

Question 3

What is the major action of aldosterone?

Answer 3

stimulate kidney to reabsorp sodium and h2o and enhance K+ secretion

Question 4

The metabolic effects of epinephrine oppose the effects of a vital hormone. Which hormone’ s actions are opposed by epinephrine?
A. Cortisol
B. Estrogen
C. Glucagon
D. Insulin
E. Thyroid Hormone

Answer 4

The correct answer is D. Epinephrine acts to raise blood glucose and mobilize energy from storage forms, such as glycogen and fats. Insulin promotes storage of these.

Question 5

A patient is found to have a hormone-secreting tumor of the adrenal medulla chromaffin cells. Release of which of the following hormones would be most increased?
A. Aldosterone
B. Androgens
C. Cortisol
D. Epinephrine
E. Norepinephrine

Answer 5

The correct answer is E. Although epinephrine is normally released from the adrenal medulla in greater quantities than norepinephrine, patients with pheochromocytoma have severe elevations in norepinephrine release. The elevated hormones produce symptoms such as elevated blood pressure, hyperglycemia, glucosuria, and increased metabolic rate.

Question 6

Which of the following results from epinephrine administration?
A. Glycogenolysis
B. Lipogenolysis
C. Liver glycogenesis
D. Muscle glycogenesis
E. Protein Breakdown

Answer 6

The correct answer is A. Epinephrine is released in response to stress and acts to mobilize energy. Two ways in which epinephrine acts are to increase glycogen and adipose breakdown.