1. In addition to the endocrine system, the hypothalamus is also part of which s

Question

1. In addition to the endocrine system, the hypothalamus is also part of which system?
A. Excretory
B. Nervous
C. Circulatory
D. Digestive
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2. What hormone/s are produced by the adrenal medulla?

A. Epinephrine
B. Glucocorticoids
C. Mineralocorticoids
D. B & C
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3. Which of the following is true regarding aldosterone?

A. It is regulated by the anterior pituitary.
B. It causes the kidneys to retain potassium and excrete sodium.
C. It causes the kidneys to excrete potassium and retain sodium.
D. It causes “fight or flight” responses in times of emergency.
E. It decreases blood pressure.
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4. If you were experiencing kidney disease, what hormone level would be low and what would occur?
A. PTH, tetany
B. Calcitonin, tetany
C. Erythropoietin, anemia
D. Erythropoietin, stress response
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5. Which of the following is false regarding testosterone?
A. Production is highest in childhood.
B. It causes growth of the sex organs.
C. It is required for the maturation of sperm.
D. It causes males to have a wider pelvis (compared to females).

Explanation / Answer

1. In addition to the endocrine system hypothalamus is also a part of nervous system. Nervous system and endocrine system together called as integrating system of the body. So option B is correct.

2. Adrenal medulla is a sympathetic ganglion. It secretes 2 major hormones like epinephrine or norepinephrine. Adrenal cortex secrets glucocorticoids and mineralocorticoids.

So option A epinephrine is correct.

3. Aldosterone is a mineralocorticoid which is secreated by adrenal cortex . The main function of aldosterone is acts on renal tubules and stimulates the reabsorption of sodium ions and water and excretion of potassium and phosphate ions. So option C is correct.

4. The juxtaglomerular cells of kidney produce a peptide hormone called erythropoietin which stimulates erythropoiesis . So in case of kidney diseases conditions like anemia occurs. So option C is correct.

5. Testosterone is an androgen which regulates the secondary sexual characters of male. The levels of this is low in child hood. So option A is correct .

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