1. (1)

Testosterone is a gonadotropin. True False

2. (1)

Many effects of growth hormone are mediated by insulin-like growth factors (IGFs) secreted by the pancreas. True False

3. (1)

Both the thymus and the pineal gland shrink after childhood. True False

4. (1)

Cholesterol is essential for the synthesis of steroid hormones. True False

5. (1)

Addison disease is a consequence of a tumor of the adrenal medulla. True False

6. (1)

Endocrine gland(s) secrete substances that do not alter the metabolism of their target cells, but have extracellular effects. secrete their products by way of ducts. have an unusually low density of blood capillaries. release their secretions directly into the blood. secretions may be released into the body surface.

7. (1)

This figure shows the major organs of the endocrine system. What does "1" represent? the hypothalamus the pituitary gland the pineal gland the hypophysis the adrenal gland

8. (1)

This figure shows the major organs of the endocrine system. Which structure secretes growth hormone (GH or somatotropin)? 2 3 4 8 9

9. (1)

The ___ is not an endocrine gland but it has a role in endocrine function. kidney pancreas thyroid gland parathyroid gland adrenal gland

10. (1)

The neurohypophysis (posterior pituitary) secrets prolactin (PRL). adrenocorticotropic hormone (ACTH). oxytocin (OT). thyroid hormone (TH). growth hormone (GH).

11. (1)

Thyrotropin-releasing hormone targets the thyroid gland. thyroid hormone. hypothalamus. posterior pituitary (neurohypophysis). anterior pituitary (adenohypophysis).

12. (1)

Antidiuretic hormone (ADH) targets the kidneys. adrenal gland. anterior pituitary (adenohypophysis). hypothalamus. pancreas.

13. (1)

Target organs most often regulate the pituitary gland via negative feedback inhibition. positive feedback inhibition. up-regulation. down-regulation. antagonistic regulation.

14. (1)

The infundibulum is a mass of endocrine and neural cells. a portal system between the hypothalamus and the pituitary gland. a bulky nucleus composed of the paraventricular nucleus and the supraoptic nucleus. a depression of the sphenoid bone that protects the pituitary gland. a projection of the hypothalamus from which the pituitary gland hangs.

15. (1)

Negative feedback inhibition occurs when thyrotropin-releasing hormone (TRH) targets the anterior pituitary. thyrotropin-releasing hormone (TRH) causes the anterior pituitary to release thyroid-stimulating hormone (TSH). thyrotropin-releasing hormone (TRH) targets the thyroid gland. thyroid-stimulating hormone (TSH) targets the thyroid gland. thyroid hormone (TH) targets the anterior pituitary.

16. (1)

This figure shows the hypothalamo-pituitary-target organ relationships. Which hormone stimulates glucocorticoids secretion? 1 6 8 5 10

17. (1)

This figure shows the hypothalamo-pituitary-target organ relationships. Which hormone is not a tropin? 1 4 8 5 6

18. (1)

This hormone plays an important role in synchronizing physiological function with the cycle of daylight and darkness. calcitonin melanin melatonin hepcidin inhibin

19. (1)

The ___ secretes several hormones that stimulate the development of lymphatic organs and regulates development and activity of T cells (white blood cells). thyroid thymus adrenal gland spleen parathyroid

20. (1)

The ___ secretes a hormone that increases the body's metabolic rate, promotes alertness and quickens reflexes, and stimulates the fetal nervous system. thyroid gland pancreas adrenal gland parathyroid gland thymus

21. (1)

The ___ secrete(s) a hormone as a response to hypocalcemia. thymus thyroid gland parathyroid glands pineal gland pituitary gland

22. (1)

The ___ secrete(s) ___, which promotes Na+ and water retention. adrenal medulla; epinephrine pancreas; cortisol kidneys; corticosterone adrenal cortex; aldosterone thyroid; calcitonin

23. (1)

The zona fasciculata in the adrenal gland secretes glucagon. androgens. estradiol. aldosterone. cortisol.

24. (1)

Many hours after a meal, alpha (α) cells in the pancreatic islets (islets of Langerhans) secrete glucagon, which lowers blood glucose. glucagon, which raises blood glucose. insulin, which lowers blood glucose. insulin, which raises blood glucose. glucocorticoids, which raise blood glucose.

25. (1)

These are all secreted by the pancreas except glucagon. pancreatic polypeptide. gastrin. somatostatin (growth hormone-inhibiting hormone). somatotropin (growth hormone). 26.What cells secrete testosterone 27.What cells secrete oestrogens 28.What cell secrete Thyroid Hormone