1. Quiz # 2 Endocrine Physiology
Physiology Fall 2009
Answers on last page

2. 1. An increase in plasma calcium concentration should result in:
Increased parathyroid hormone secretion
More conversion of Vitamin D to the active hormone in the kidney
More excretion of Ca++ in urine
Increased resorption of bones by osteoclasts

3. 2. Which of the following is released from the anterior pituitary gland?
Follicle stimulating hormone
Vasopressin
Oxytocin
Somatostatin
Gonadotropin Releasing Hormone

4. 3. Which of the following lead(s) to an increase in cortisol?
decreased adrenocortotropic hormone
decreased corticotropin releasing hormone
deccreased thyroid stimulating hormone
Prolonged exposure to cold
Psychological anxiety
Increased levels of Vasopressin
Cytokines from cells of the immune system

5. 4. Cell of the adrenal cortex secrete more aldosterone in response to which of the following ?
Increasing plasma concentration of K+
Angiotensin I
Angiontensin II
ACTH

6. 5. Addison’s Disease is characterized by:
decreased cortisol
Disturbances in plasma electrolytes
increased adrenocorticotropic hormone secretion
more than normal aldosterone secretion
Stimulation of melanocytes

7. 6. Which of the following hormones travels in the blood bound to carrier proteins?
IGF-1 T3
Aldosterone
Dopamine
Estrione
TSH

8. 7. TRH is synthesized in and released from the:
Anterior pituitary
Posterior pituitary
Adrenal cortex
hypothalamus

9. 8. A girl in her teens develops an adenoma in the adenohypophysis which secretes excessive amounts of Growth Hormone. Which of the following are to be expected:
She will grow abnormally tall
Plasma levels of IGF-1 will be high.
Plasma levels of GHRH will be low
Bones of the face, hands, and feet will gradually atrophy.

10. 9. Which of the following reaches its target cells by first entering capillaries in the median eminence?
TRH
Adrenocorticotropic hormone
Somatostatin
Corticotropin Releasing Hormone.

11. 10. Which ONE of the following hormones is eliminated most rapidly from the bloodstream?
TSH
Aldosterone
EPI

12. 11. Angiotensin II has the following actions:
stimulates thirst
relaxes smooth muscles of blood vessels thereby lowering blood pressure
Stimulates the secretion of cortisol
Stimulates the secretion of a mineralicorticoid

13. 12. In patients with untreated Hashimoto’s disease which of the following would be expected?
Low blood pressure
bradycardia
constipation
Hypothermia
Elevated levels of TSH
Elevated levels of TH

14. 13. Which of the following hormones have receptors on the cell surface of their target cells?
Aldosterone
TRH
EPI
Cortisol
Oxytocin
Prolactin

15. 14. Suppose a patient presents with low levels of TSH and high levels of T3 and T4. The diagnosis is most likely
Primary hyposecretion
Primary hypersecretion
Secondary hypersecretion.

16. Answers
1 C
2 A
3 DEFG
4 AC
5 ABCE
6 BC (E will not be counted either way because estrone was mispelled on the quiz.)
7 D
8 ABC
9 ACD
10 C
11 AD
12 ABCDE
13 BCEF
14 B