AP2 ENDOCRINE

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1

The hypothalamus
A) rests in the sella turcica.
B) is also called the neurohypophysis.
C) is located inferior to the pituitary gland.
D) regulates the secretory activity of the pituitary gland.
E) is located superior to the thalamus.

D) regulates the secretory activity of the pituitary gland

2

2. The two functional portions of the pituitary gland are the
A) infundibulum and neurohypophysis.
B) pars nervosa and pars tuberalis.
C) neurohypophysis and adenohypophysis.
D) adenohypophysis and infundibulum.
E) infundibulum and hypothalamohypophysial portal system
Answer: c

C) neurohypophysis and adenohypophysis.

3

Which of the following is a subdivision of the anterior pituitary?
A) pars nervosa
B) pars distalis
C) pars hypothalamus
D) pars infundibuli
E) pars proximalis

B) pars distalis

4

The posterior pituitary
A) has a direct connection with neurons of the hypothalamus.
B) is controlled by releasing hormones produced in the hypothalamus.
C) produces hormones that regulate other endocrine glands.
D) stores lipotropins.
E) is not related to fluid balance in the bod

A) has a direct connection with neurons of the hypothalamus.

5

A function of the hypothalamohypophysial tract is to
A) move ADH from the hypothalamus to the anterior pituitary.
B) move releasing hormones from the hypothalamus to the posterior pituitary.
C) carry action potentials to the posterior pituitary causing the release of oxytocin.
D) cause the release of insulin from the anterior pituitary.
E) form a vascular connection from the hypothalamus to the posterior pituitary

C) carry action potentials to the posterior pituitary causing the release of oxytocin.

6

Arrange the following in the sequence in which releasing hormones travel through them.
1. Secondary capillary network
2. Primary capillary network
3. Hypothalamohypophysial portal vessels
A) 1, 2, 3
B) 3, 2, 1
C) 2, 3, 1
D) 3, 1, 2
E) 2, 1, 3

C) 2, 3, 1

7

Releasing hormones
A) travel on axons to the posterior pituitary.
B) increase anterior pituitary secretion .
C) cause action potentials to be generated by anterior pituitary cells.
D) are produced in the pars distalis.
E) decrease secretions of the anterior pituitary.

B) increase anterior pituitary secretion

8

Which of the following hormones is synthesized by the hypothalamus?
A) ADH
B) MSH
C) TSH
D) ACTH
E) T3 and T4

A) ADH

9

If fluid intake increases dramatically over a short time frame,
A) ADH secretion increases.
B) ADH secretion decreases.
C) there is no effect on ADH secretion.
D) ADH secretion stops.
E) none of the above

B) ADH secretion decreases

10

ADH secretion will increase when
A) blood osmolality increases.
B) blood pressure increases.
C) blood volume increases.
D) blood pH increases.
E) blood osmolality decreases.

A) blood osmolality increases.

11

A person working outside in the hot sun can perspire a great deal. This increase in
perspiration results in an increase in water loss from the body. Increased water loss causes the
blood osmolality to increase. This increased osmolality is "sensed" by the
A) kidneys.
B) osmoreceptors.
C) cerebral cortex.
D) anterior pituitary.
E) baroreceptors.

B) osmoreceptors

12

Urine volume ____ when ADH secretion decreases.
A) increases
B) decreases
C) is not affected
D) declines
E) none of the above

A) increases

13

ADH
A) is produced by cells of the anterior pituitary.
B) is stored and released from the posterior pituitary.
C) has the uterus as its primary target.
D) travels on axons to its target tissue.
E) travels in the blood from the hypothalamus to the posterior pituitary.

B) is stored and released from the posterior pituitary.

14

Oxytocin is responsible for
A) preventing release of insulin from the pancreas.
B) preventing the formation of goiters.
C) milk production by the mammary glands.
D) regulating blood calcium levels.
E) causing contractions of uterine smooth muscle during labor.

E) causing contractions of uterine smooth muscle during labor

15

Which of the following hormones is secreted by the anterior pituitary?
A) ADH
B) TRH
C) CRH
D) FSH
E) Oxytocin

D) FSH

16

Anterior pituitary hormones
A) are all proteins or glycoproteins.
B) are transported in the hypothalamohypophysial portal system.
C) bind to intracellular receptor molecules.
D) have a half-life of hours.
E) are released as a direct result of action potentials.

A) are all proteins or glycoproteins.

17

Anterior pituitary hormones
A) are all proteins or glycoproteins.
B) are transported in the hypothalamohypophysial portal system.
C) bind to intracellular receptor molecules.
D) have a half-life of hours.
E) are released as a direct result of action potential

A) are all proteins or glycoproteins.

18

ADH is synthesized by the ____ while TSH is synthesized by the ____.
A) kidney; thyroid
B) posterior pituitary; thyroid
C) hypothalamus; anterior pituitary
D) kidney; anterior pituitary
E) posterior pituitary; hypothalamus

C) hypothalamus; anterior pituitary

19

Growth hormone
A) increases amino acid uptake in cells.
B) decreases the use of fat as an energy source.
C) decreases the synthesis and storage of glycogen.
D) increases the use of glucose for energy.
E) facilitates the uptake of glucose by cells.

A) increases amino acid uptake in cells.

20

Which of the following will inhibit the secretion of growth hormone?
A) growth hormone-releasing hormone (GHRH)
B) growth hormone-inhibiting hormone (GHIH)
C) somatomedins
D) a posterior pituitary-inhibiting hormone
E) T3 and T4

B) growth hormone-inhibiting hormone (GHIH)