Download Quiz # 2 Friday, 21 September Answers

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Quiz #2 Correct responses are in bold font.
1. Which of the following is synthesized and released by cells of the hypothalamus and reach its targets in the
anterior pituitary by way of the hypothalamo-hypophyseal portal system?
a) GnRH b) TSH c) Somatostatin d) dopamine
e) ACTH
f) CRH
2. Which of the following stimulates the liver and other cells to secrete Insulin-like Growth Factor I?
a) Somatostatin
b) Growth Hormone
c) dopamine
3. ACTH is secreted from the
a) hypothalamus b) anterior pituitary
c) posterior pituitary.
4. ACTH stimulates the secretion of
a) aldosterone from the adrenal cortex
b) cortisol from the adrenal cortex
c) corticotrophin from the adrenal cortex d) milk
5. Which of the following is/are examples of short loop negative feedback:
a) the effect of prolactin on dopamine secretion
b) the effect of T3 and T4 on TSH secretion
c) the effect of T3 and T4 on TRH secretion
d) the effect of TSH on TRH secretion
6. If negative feedback is working as expected, then high levels of T3 and T4 should
cause the secretion of TSH to a) increase
b) decrease.
7. If negative feedback is working as expected, then low levels of cortisol should cause the secretion of
ACTH to a) increase b) decrease.
8. If negative feedback is working as expected, then high levels of IGF-1 should cause the secretion of SS to
a) increase b) decrease.
9. Which of the following hormones is released from the anterior pituitary?
a) FSH b) estrogen c) oxytocin
d) vasopressin
e) TRH.
10. Which is true of a person who has untreated primary hypothyroidism?
a) low levels of T3 and T4
b) low levels of TSH
c) low body temperature
d) bradycardia
e) constipation
f) hyperpigmentation.
11. Which is true of a person with untreated Addison’s disease?
a) elevated levels of aldosterone
b) elevated levels of cortisol
c) elevated levels of ACTH
d) disturbances of electrolyte concentrations.
e) polydipsia
e) polyuria
12. To treat central diabetes insipidus, a patient would receive
a) injections of aldosterone b) tablets of T3 and T4
c) tablets of vasopressin
d) nasal sprays consisting of analogs of ADH
d) tablets of glucose.
13. In the negative feedback pathway for plasma calcium, the receptor is
a) the hypothalamus b) the anterior pituitary c) the kidney d) the parathyroid glands
14. The action(s) of parathyroid hormone is/are
a) stimulate bone resorption
c) stimulate the kidneys to produce Vitamin D
b) stimulate calcium retention by the kidneys
d) suppress thyroid hormone secretion.