SCB 204.1738, 1739
Quiz 4
FORM C
Robyn O’Kane, Ph.D.
Spring I 2008
Name_________________________________________________________________
1. Thyroid-stimulating hormone
A. increases the rate of thyroid hormone production.
B. allows iodine to be pulled into the thyroid follicular cells.
C. is released from the hypothalamus.
D. All of the above are correct.
E. A and B are correct only.
2. When blood calcium concentration starts to decrease, _________________ is released
from the ______________ gland.
A. parathyroid hormone; parathyroid
B. calcitonin; thyroid
3. When this happens (from previous question), which of the following will be a result?
A. Decreased calcium absorption in the GI tract.
B. Increased osteoclast activity
C. Increased calcium excretion at the kidney (in urine).
D. All of the above will happen
4. A tumor in the middle layer of the adrenal cortex will result in increase secretion of
A. androgens.
B. aldosterone.
C. norepinephrine/epinephrine
D. cortisol.
5. The hypophyseal portal system
A. starts at the supraoptic and paraventricular nuclei.
B. shuttles hormone-rich blood from the hypothalamus to the anterior pituitary.
C. is the collection of axons that travels down the infundibulum.
D. results in hormones being released from the posterior pituitary.
Use the following information to answer Questions 6-7 below:
Normal blood glucose concentration is between 70-120 mg/dL.
6. When blood glucose concentration is 65 mg/dL,
A. glucagon will be released.
B. insulin will be released.
C. glycogenolysis will occur.
D. A and C are correct.
E. B and C are correct.
7. This result is an example of
A. positive feedback.
B. negative feedback.
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8. Leptin
A. levels are low in obese people.
B. is released from the hypothalamus.
C. helps enhance (increase) appetite.
D. gets released from adipocytes when lipids are absorbed.
9. Endocrine secretions are released into the _______________ whereas exocrine
secretions are released into the ________________.
A. external environment; external environment
B. bloodstream; bloodstream
C. external environment; bloodstream
D. bloodstream; external environment
10. Glucocorticoids have all of the following effects EXCEPT
A. increased resistance to stress.
B. increased rate of gluconeogenesis.
C. increased rate of skeletal muscle breakdown.
D. increased rate of sodium reabsorption at the kidneys.
11. Choose the answer that puts epinephrine activity in the correct order:
I. Phosphorylates an enzyme to stimulate glycogenolysis
II. ATP is converted into cAMP by adenylate cyclase
III. A G protein is activated
IV. A protein kinase is activated
V. Binds to a specific receptor
A. I, II, III, IV, V
B. V, II, III, IV, I
C. V, III, II, IV, I
D. V, III, II, I, IV
12. All of the following are correct regarding gonadotropin-releasing hormone EXCEPT
A. it controls appetite.
B. it is released by the hypothalamus.
C. it causes follicle stimulating hormone to be released.
D. its action is enhanced by the action of leptin.
13. Graves disease
A. is diagnosed by increased levels of TRH and/or TSH but decreased levels of T3/T4.
B. is a condition caused by hypothyroidism.
C. results when there isn’t enough tyrosine in the body.
D. is characterized by an increased metabolic rate.
14. Which of the following is correct regarding Addison’s disease, Cushing’s disease,
and congenital adrenal hyperplasia?
A. They all can be treated with cortisol injections.
B. They all have an increased secretion of ACTH.
C. They all produce cortisol in increased amounts.
D. They all result in a “moonfaced” appearance.
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Use the following answer choices for the descriptions in Questions 15-18 below:
A. Nervous system
B. Endocrine system
C. Both systems
15.
16.
17.
18.
Responsible for long-term activities, like growth
Releases hormones into the bloodstream
Short-lived responses
Molecules released bind to receptors of the target cells
19. Corticotropin-releasing hormone
A. has a permissive effect on leptin.
B. release is stimulated by adrenocorticotropic hormone.
C. leads to an increase in glucose and other energy precursors in the bloodstream.
D. is released from the posterior pituitary.
Use the following answer choices for the descriptions/names of hormones in
Questions 20-26 below:
A. Lipid-soluble
20.
21.
22.
23.
24.
25.
26.
B. Water-soluble
C. Both categories
Activate a G protein
Nitric oxide
Require a second messenger system
Easily diffuse across the cell membrane
Directly alter gene expression when bound to a receptor
Bind to specific receptors
Bound to a transport protein for movement through the bloodstream
27. Extra credit: Type I diabetes results from
A. too much insulin being produced by the pancreas.
B. destruction or inactivity of the beta cells in the pancreas.
C. a lack of exocrine activity of the pancreas.
D. obesity.
E. All of the above are correct.
28. Extra credit: The exocrine secretions of the pancreas include all of the following
EXCEPT
A. nucleases.
B. amylase.
C. a basic buffer.
D. pepsinogen.
E. trypsinogen.
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