Question 1

Growth hormone is secreted by ________ cells in the anterior pituitary.

Accepted Answer

A)   somatotropic
B)   gonadotropic
C)   thyrotropic
D)   mammotropic
E)   corticotropicF) D) and E)
G) A) and E)

Question 2

Parathyroid hormone release depends on blood levels of calcium. Such an endocrine reflex is said to be initiated by

Accepted Answer

A)   hormonal stimulation.
B)   humoral stimulation.
C)   neural stimulation.
D)   positive feedback stimulation.E) None of the above
F) A) and D)

Question 3

Among their many functions, hormones regulate blood volume, cellular concentration, and number of platelets.

Accepted Answer

A) True 
 B)False

Question 4

Generally, the shorter the half-life of a hormone

Accepted Answer

A)   the more frequently it must be replaced.
B)   the less frequently it must be replaced.C) A) and B)
D) undefined

Question 5

In response to excessive amounts of hormone, a target cell may reduce its number of receptors for that hormone. This is an example of

Accepted Answer

A)   down-regulation.
B)   up-regulation.
C)   increasing sensitivity to a hormone.
D)   increasing specificity to a hormone.E) B) and C)
F) A) and D)

Question 6

In addition to secreting hormones, the pancreas also produces

Accepted Answer

A)   white blood cells.
B)   sodium chloride.
C)   pancreatic juice.
D)   endorphins.
E)   prostaglandins.F) A) and E)
G) B) and D)

Question 7

Identity, source, secretory control, & functional roles of the major hormones produced by the body. 
-This figure shows the pituitary gland. Which number indicates the hypothalamus?

Accepted Answer

A)   1
B)   2
C)   3
D)   4
E)   6F) A) and E)
G) C) and E)

Question 8

Eicosanoids are a primary type of local hormone.

Accepted Answer

A) True 
 B)False

Question 9

When the effects of one hormone reinforce the activity of another hormone on the same target cell, the interaction is said to be

Accepted Answer

A)   agonistic.
B)   antagonistic.
C)   synergistic.
D)   permissive.E) None of the above
F) A) and C)

Question 10

Thyrotropin-releasing hormone is secreted by the

Accepted Answer

A)   hypothalamus and it increases release of thyroid-stimulating hormone from the anterior pituitary.
B)   hypothalamus and it increases release of thyroid-stimulating hormone from the posterior pituitary.
C)   anterior pituitary and it increases release of thyroid hormone from the thyroid gland.
D)   parathyroid hormone and it increases release of thyroid hormone from the thyroid gland.
E)   thymus and it increases release of thyroid hormone from the thyroid gland.F) D) and E)
G) A) and E)

Question 11

The pancreas has both endocrine and exocrine functions.

Accepted Answer

A) True 
 B)False

Question 12

The half-life of a hormone is

Accepted Answer

A)   one-half of the time it takes to synthesize the chemical messenger molecule.
B)   the time necessary to reduce the hormone concentration in the blood to half of what had been secreted.
C)   half the time until the hormone molecule dissolves.
D)   half of the duration of the hormone's effects on its target cells throughout the body.E) C) and D)
F) A) and B)

Question 13

As growth hormone levels in the blood increase,

Accepted Answer

A)   glycogenolysis increases.
B)   fat production increases.
C)   protein synthesis decreases.
D)   blood glucose decreases.E) C) and D)
F) A) and B)

Question 14

Which hormone is secreted by the pineal gland?

Accepted Answer

A)   Melatonin
B)   Insulin
C)   Melanin
D)   Cortisol
E)   OxytocinF) All of the above
G) B) and E)

Question 15

The release of hormones from the adrenal medulla is stimulated by

Accepted Answer

A)   adrenocorticotropic hormone.
B)   the sympathetic division of the autonomic nervous system.
C)   follicle-stimulating hormone.
D)   growth hormone.
E)   thyrotropic hormone.F) C) and D)
G) A) and B)

Question 16

Control by the hypothalamus & pituitary gland. 
-This figure shows an example of regulation of hormone secretion by a negative feedback loop. The large box labeled 1 represents the initial stimulus. What hormones are represented by the small boxes labeled a, b, and c?

Accepted Answer

A)   a = TSH, b = TRH, c = TH
B)   a = TIH, b = TSH, c = TH
C)   a = TRH, b = TSH, c = TIH
D)   a = TRH, b = TSH, c = TH
E)   a = TSH, b = TH, c = TRHF) A) and D)
G) All of the above

Question 17

In most of its target cells, cortisol ________ glucose uptake and ________ protein metabolism.

Accepted Answer

A)   increases; increases
B)   increases; decreases
C)   decreases; decreases
D)   decreases; increasesE) A) and B)
F) All of the above

Question 18

Control by the hypothalamus & pituitary gland. 
-This figure shows an example of regulation of hormone secretion by a negative feedback loop. The large box labeled 1 represents the initial stimulus. What endocrine glands are indicated by the letters d and e?

Accepted Answer

A)   d = hypothalamus, e = posterior pituitary
B)   d = thalamus, e = anterior pituitary
C)   d = hypothalamus, e = anterior pituitary
D)   d = hypothalamus, e = thyroid gland
E)   d = thalamus, e = posterior pituitaryF) A) and D)
G) C) and D)

Question 19

Within the infundibulum, the axons from neurons extending into the posterior pituitary are known as the

Accepted Answer

A)   hypothalamo-hypophyseal tract.
B)   primary plexus.
C)   secondary plexus.
D)   supraoptic portal system.E) A) and B)
F) A) and C)

Question 20

Which hormone is secreted by the beta cells of the pancreas?

Accepted Answer

A)   Insulin
B)   Glucagon
C)   Somatostatin
D)   Pancreatic polypeptide
E)   Pancreatic lipaseF) C) and D)
G) A) and E)

Exam 17: Endocrine System

Control by the hypothalamus & pituitary gland. -This figure shows an example of regulation of hormone secretion by a negative feedback loop. The large box labeled 1 represents the initial stimulus. What hormones are represented by the small boxes labeled a, b, and c?

Correct AnswerverifiedShow Answer

Among their many functions, hormones regulate blood volume, cellular concentration, and number of platelets.

Correct AnswerverifiedShow Answer

Thyrotropin-releasing hormone is secreted by the

Correct AnswerverifiedShow Answer

Generally, the shorter the half-life of a hormone

Correct AnswerverifiedShow Answer

Within the infundibulum, the axons from neurons extending into the posterior pituitary are known as the

Correct AnswerverifiedShow Answer

As growth hormone levels in the blood increase,

Correct AnswerverifiedShow Answer

Which hormone is secreted by the beta cells of the pancreas?

Correct AnswerverifiedShow Answer

Eicosanoids are a primary type of local hormone.

Correct AnswerverifiedShow Answer

Parathyroid hormone release depends on blood levels of calcium. Such an endocrine reflex is said to be initiated by

Correct AnswerverifiedShow Answer

The release of hormones from the adrenal medulla is stimulated by

Correct AnswerverifiedShow Answer

The pancreas has both endocrine and exocrine functions.

Correct AnswerverifiedShow Answer

Control by the hypothalamus & pituitary gland. -This figure shows an example of regulation of hormone secretion by a negative feedback loop. The large box labeled 1 represents the initial stimulus. What endocrine glands are indicated by the letters d and e?

Correct AnswerverifiedShow Answer

In addition to secreting hormones, the pancreas also produces

Correct AnswerverifiedShow Answer

Which hormone is secreted by the pineal gland?

Correct AnswerverifiedShow Answer

Identity, source, secretory control, & functional roles of the major hormones produced by the body. -This figure shows the pituitary gland. Which number indicates the hypothalamus?

Correct AnswerverifiedShow Answer

Growth hormone is secreted by ________ cells in the anterior pituitary.

Correct AnswerverifiedShow Answer

The half-life of a hormone is

Correct AnswerverifiedShow Answer

In response to excessive amounts of hormone, a target cell may reduce its number of receptors for that hormone. This is an example of

Correct AnswerverifiedShow Answer

In most of its target cells, cortisol ________ glucose uptake and ________ protein metabolism.

Correct AnswerverifiedShow Answer

When the effects of one hormone reinforce the activity of another hormone on the same target cell, the interaction is said to be

Correct AnswerverifiedShow Answer

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In most of its target cells, cortisol glucose uptake and protein metabolism.

Correct Answer
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