G12 C6 Endocrine System MCQs

Chapter 6: Endocrine System

Multiple Choice Questions

1. Steroid hormones are secreted by

the adrenal cortex
the gonads
the thyroid
both A and B

Answer: d. both A and B

2. Examples of posterior pituitary hormones are

FSH and LH
prolactin and parathormone
melatonin and prostaglandin
ADH and oxytocin

Answer: d. ADH and oxytocin

3. The primary targets for FSH are cells in the

hypothalamus
ovary
thyroid
pituitary

Answer: b. ovary

4. Which of the following controls the activity of all others?

thyroid
pituitary
adrenal cortex
gonads

Answer: b. pituitary

5. Which of the following have antagonistic (opposing) effects?

parathyroid hormone and calcitonin
glucagons and thyroxine
growth hormone and epinephrine
cortisone and ACTH

Answer: a. parathyroid hormone and calcitonin

6. Which of the following hormones has the broadest range of targets?

ADH
oxytocin
TSH
epinephrine

Answer: d. epinephrine

7. The pancreas increases its output of insulin in response to

an increase in body temperature
changing cycle of dark and light
a decrease in blood glucose
an increase in blood glucose

Answer: d. an increase in blood glucose

8. Name the gland that is located at the base of the throat, just inferior to the laryngeal prominence (Adam’s apple).

pituitary
pineal gland
hypothalamus
thyroid

Answer: d. thyroid

9. Action of parathormone in the human body

decreases blood sodium level
increases blood sodium level
decreases blood calcium level
increases blood calcium level

Answer: d. increases blood calcium level

10. Which of the following endocrine glands secretes growth hormones?

thyroid gland
pituitary gland
adrenal gland
testes

Answer: b. pituitary gland

11. Which of the following pair of endocrine glands is located in the brain?

hypothalamus and thymus
pituitary and parathyroid
thyroid and pineal
hypothalamus and pineal

Answer: d. hypothalamus and pineal

12. What gland is located just superior to the kidneys?

pituitary
adrenal
pancreas
ovaries

Answer: b. adrenal

13. Which of the following glands can be classified as both an endocrine and an exocrine gland?

thyroid
thymus
pancreas
pituitary

Answer: c. pancreas

14. Which of these hormones is made by the posterior pituitary?

FSH
LH
ACTH
ADH

Answer: d. ADH

15. Which one of the following is the smallest in the human body?

pineal gland
pituitary gland
adrenal gland
parathyroid glands

Answer: b. pituitary gland

16. Which of the following hormones are responsible for the "fight-or-flight" response?

epinephrine and norepinephrine
insulin and glucagon
estrogen and progesterone
thyroxin and melatonin

Answer: a. epinephrine and norepinephrine

17. Calcitonin is a hormone of which of following:

adrenal cortex
thyroid gland
pituitary gland
thymus gland

Answer: b. thyroid gland

18. All of the following are hormones of the anterior pituitary except:

human growth hormone (GH)
follicle-stimulating hormone (FSH)
parathyroid hormone (PTH)
thyroid-stimulating hormone (TSH)

Answer: c. parathyroid hormone (PTH)

19. The secretions from which of these glands differs between males and females?

adrenal
parathyroid
gonadal
pancreas

Answer: c. gonadal

20. Calcium level in the blood is regulated by the:

thyroid
parathyroid
posterior pituitary
A and B

Answer: d. A and B

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