Question 1

When the hormone epinephrine binds to receptors on the surface of a heart muscle cell, a new molecule, called cyclic AMP, is produced. Cyclic AMP then causes the heart muscle cells to contract more strongly, increasing blood flow throughout the body. In this example, cyclic AMP is acting as a(n)

Accepted Answer

A)   target cell.
B)   intercellular enzyme.
C)   energy carrier.
D)   second messenger.
E)   hormone.F) C) and D)
G) All of the above

Question 2

Which of the following glands produces hormones that regulate the secretory activity of other endocrine glands?

Accepted Answer

A)   Ovaries and testes
B)   Adrenal cortex
C)   Pancreas
D)   Anterior pituitary
E)   ThyroidF) A) and B)
G) A) and E)

Question 3

All releasing hormones produced by neurosecretory cells of the hypothalamus are

Accepted Answer

A)   peptides.
B)   modified amino acids.
C)   steroids.
D)   modified fatty acids.
E)   ions.F) B) and E)
G) A) and B)

Question 4

ADH and oxytocin are produced by neurosecretory cells of the ; however, they are stored in and released from the .

Accepted Answer

hypothalam...

Question 5

Histamine is an example of a(n)

Accepted Answer

A)   prostaglandin.
B)   synaptic messenger.
C)   local hormone.
D)   neurotransmitter.
E)   endocrine hormone.F) B) and D)
G) A) and E)

Question 6

Insulin _ blood glucose, whereas glucagon _ _ blood glucose.

Accepted Answer

A)   increases; decreases
B)   does not affect; controls
C)   controls; does not affect
D)   makes; destroys
E)   decreases; increasesF) A) and E)
G) A) and D)

Question 7

is the hormone that stimulates the liver to convert glycogen to glucose.

Accepted Answer

The answer of is the hormone that stimulates the liver...

Question 8

Which of the following hormones suppresses the immune response?

Accepted Answer

A)   FSH
B)   Cortisol
C)   ACTH
D)   LHE) C) and D)
F) B) and D)

Question 9

Local hormones are

Accepted Answer

A)   released from a nerve cell and then diffuse across a synaptic gap to influence the target cells.
B)   released by a cell into the surrounding interstitial fluid and affect only other nearby cells.
C)   electrical signals that move between adjacent cells.
D)   released from gap junctions directly into the cytoplasm of the connected cell.
E)   released from one cell and transferred via the blood to target cells throughout the body.F) C) and D)
G) A) and E)

Question 10

Only mammals produce hormones.

Accepted Answer

A) True 
 B)False

Question 11

Thymosin, produced by the thymus, stimulates the maturation of

Accepted Answer

A)   B cells.
B)   all white blood cells.
C)   red blood cells.
D)   both T and B cells.
E)   T cells.F) B) and D)
G) B) and E)

Question 12

Which hormone lowers blood glucose levels?

Accepted Answer

A)   Estrogen
B)   Glucagon
C)   Growth hormone
D)   Cortisol
E)   InsulinF) B) and E)
G) A) and E)

Question 13

How do calcitonin and parathyroid hormone interact to regulate blood calcium levels?

Accepted Answer

They act as antagonists. Calci...

Question 14

A common occurrence for nursing mothers is "milk let- down," which stimulates the mother's mammary glands to eject milk. Which hormone is responsible for the milk letdown reflex?

Accepted Answer

A)   Oxytocin
B)   Follicle- stimulating hormone (FSH) 
C)   Prolactin
D)   Estrogen
E)   ProgesteroneF) A) and D)
G) A) and E)

Question 15

ADH increases fluid retention when the body sweats and decreases fluid retention when someone has consumed large amounts of water. This is an example of

Accepted Answer

A)   positive feedback.
B)   negative feedback.
C)   neurotransmitter activity.
D)   paracrine communication.
E)   synaptic communication.F) A) and B)
G) All of the above

Question 16

What are prostaglandins?

Accepted Answer

A)   Modified fatty acids
B)   Peptides or proteins
C)   Modified amino acids
D)   Steroids
E)   CarbohydratesF) B) and D)
G) B) and C)

Question 17

Alcohol prevents dehydration by increasing the production of ADH.

Accepted Answer

A) True 
 B)False

Question 18

The hormone interaction in this figure is an example of

Accepted Answer

A)   the effects of endocrine disruptors.
B)   transmission at a gap junction.
C)   a positive feedback mechanism.
D)   a negative feedback mechanism.
E)   blood glucose regulation.F) A) and E)
G) A) and D)

Question 19

Explain how glucagon raises blood glucose levels.

Accepted Answer

Glucagon stimulates body cells...

Question 20

Hypothalamic hormones that stimulate the production of anterior pituitary hormones are called

Accepted Answer

A)   thyroid- stimulating hormones (TSHs) .
B)   secondary messengers.
C)   releasing hormones.
D)   ACTH.
E)   inhibiting hormones.F) B) and E)
G) None of the above

Exam 38: Chemical Control of the Animal Body: the Endocrine System

Insulin _ blood glucose, whereas glucagon _ _ blood glucose.

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The hormone interaction in this figure is an example of

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All releasing hormones produced by neurosecretory cells of the hypothalamus are

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ADH and oxytocin are produced by neurosecretory cells of the ; however, they are stored in and released from the .

Correct Answerverifiedhypothalam...View AnswerShow Answer

ADH increases fluid retention when the body sweats and decreases fluid retention when someone has consumed large amounts of water. This is an example of

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Which hormone lowers blood glucose levels?

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Alcohol prevents dehydration by increasing the production of ADH.

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Local hormones are

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Thymosin, produced by the thymus, stimulates the maturation of

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Histamine is an example of a(n)

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Which of the following hormones suppresses the immune response?

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Hypothalamic hormones that stimulate the production of anterior pituitary hormones are called

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When the hormone epinephrine binds to receptors on the surface of a heart muscle cell, a new molecule, called cyclic AMP, is produced. Cyclic AMP then causes the heart muscle cells to contract more strongly, increasing blood flow throughout the body. In this example, cyclic AMP is acting as a(n)

Correct AnswerverifiedShow Answer

Only mammals produce hormones.

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Explain how glucagon raises blood glucose levels.

Correct AnswerverifiedGlucagon stimulates body cells...View AnswerShow Answer

What are prostaglandins?

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Which of the following glands produces hormones that regulate the secretory activity of other endocrine glands?

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is the hormone that stimulates the liver to convert glycogen to glucose.

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A common occurrence for nursing mothers is "milk let- down," which stimulates the mother's mammary glands to eject milk. Which hormone is responsible for the milk letdown reflex?

Correct AnswerverifiedShow Answer

How do calcitonin and parathyroid hormone interact to regulate blood calcium levels?

Correct AnswerverifiedThey act as antagonists. Calci...View AnswerShow Answer

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hypothalam...
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Glucagon stimulates body cells...
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They act as antagonists. Calci...
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