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Flashcards in Endocrine review quiz Deck (10)
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1

Which of the following does not stimulate insulin secretion?
(a) elevated blood amino acid concentration.
(b) gastrointestinal hormones.
(c) a Big Mac (other fast-food hamburgers are available).
(d) starvation.
(e) elevated blood glucose concentration

D -starvation

2

Hyperthyroidism can be due to all of the following except
(a) too much TRH.
(b) too much TSH.
(c) lack of iodine.
(d) too much T4 or T3.
(e) thyroid-stimulating immunoglobulin

C- lack of iodine

Reason : iodine makes thyroid hormone

3

The zona glomerulosa of the adrenal cortex secretes
(a) aldosterone.
(b) cortisol.
(c) androgens and estrogens.
(d) cortisol AND androgens and estrogens.
(e) All of these answers

A -aldosterone

4

Gluconeogenesis
(a) refers to the conversion of amino acids into glucose.
(b) results in an increase in blood glucose.
(c) is stimulated by cortisol and glucagon.
(d) refers to the conversion of amino acids into glucose AND results in an increase in blood glucose.
(e) All of these answers

E-all of these answers

5

Which of the following is incorrect concerning PTH, calcitonin, and vitamin D?
(a) vitamin D deficiency is the cause of rickets.
(b) PTH is the most important hormone in the control of calcium metabolism.
(c) both calcitonin and PTH are produced in the follicle cells of the thyroid gland.
(d) vitamin D is actually a hormone that increases calcium absorption in the intestine.
(e) parathyroid hormone is essential for life

C-both calcitonin and PTH are produced in the follicle cells of the thyroid gland

Reason: calcitonin is produced and secreted by C cells in thyroid gland but out with follicle, PTH secreted by chief cells found in parathyroid gland

6

The effective plasma concentration of a hormone can be influenced by the hormone's
(a) rate of excretion.
(b) extent of binding to plasma proteins.
(c) rate of metabolic inactivation.
(d) rate of secretion.
(e) All of these answers

E- all of these answers

7

Which of the following situations represents negative feedback?
(a) when hormone A stimulates hormone B, hormone B inhibits hormone C.
(b) when hormone A inhibits hormone B, hormone B inhibits hormone A.
(c) when hormone A stimulates hormone B, hormone B inhibits hormone A.
(d) when hormone A inhibits hormone B, hormone B inhibits hormone C.
(e) when hormone A stimulates hormone B, hormone B stimulates hormone A.

C- when hormone A stimulates hormone B, hormone B inhibits hormone A

8

Select the incorrect association.
(a) adrenal medulla/vasopressin
(b) anterior pituitary/adenohypophysis
(c) adrenaline/catecholamine
(d) insulin/polypeptide
(e) posterior pituitary/neurohypophysis

A- adrenal medulla/vasopressin

Reason: vasopressin is released from posterior pituitary

9

Somatomedins are released from the liver in response to
(a) increased plasma growth hormone levels.
(b) increased plasma somatostatin levels.
(c) decreased plasma growth hormone levels.
(d) decreased plasma somatostatin levels.
(e) elevated levels of blood sugar

A- increased plasma growth hormone levels

Reason :insulin like growth factors- increased plasma growth hormone levels means somatamedians are released from liver

10

Which of the following is a neurohormone?
(a) vasopressin
(b) thyroid hormone
(c) growth hormone
(d) cortisol
(e) luteinizing hormone

A- vasopressin