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Endocrine System

Quiz 1

1) A group of cells that gives off or secretes chemicals.

A. artery

B. vein

C. gland

2) Bodily chemical messengers that send messages from one set of cells

to another, affecting changes.

A. hormones

B. nephrons

C. alveoli

3) This links the nervous system to the endocrine system via the

pituitary gland.

A. thalamus

B. hypothalamus

C. adrenal

4) The master gland that controls many bodily functions.

A. thalamus

B. hypothalamus

C. pituitary

5) This controls how quickly the body uses energy, makes proteins and

controls how sensitive the body should be to other hormones.

A. adrenal gland


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B. hypothalamus

C. thyroid

6) These glands control the amount of calcium in the blood and bones.

A. pituitary

B. parathyroid

C. thyroid

7) These release hormones in conjunction with stress.

A. adrenal

B. pituitary

C. thyroid

8) This affects wake/sleep patterns and seasonal functions.

A. pineal

B. adrenal

C. thyroid

Quiz 2

1

Hormones

A) are chemical signals produced in small amounts.

B) are secreted into ducts.

C) affect all the cells in the body.


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D) usually are not transported.

E) all of these

2

Given these characteristics:

1. amplitude-modulated signals

2. all-or-none response

3. usually slower response

4. effects usually more generally distributed

List the characteristics that apply to the endocrine system when compared to

the nervous system.

A) 2,3

B) 1,2,4

C) 1,3,4

D) 1,2

E) 3,4

3

Name the intercellular chemical signal that is released by cells and has a

local effect on the same cell type as that from which the chemical signal is

released.


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A) autocrine chemical signal

B) pheromone

C) paracrine chemical signal

D) hormone

E) neurotransmitter

4

Chemical signals that are secreted into the environment and modify thebehavior and physiology of other individuals are called

A) autocrine chemical signals.

B) pheromones.

C) paracrine chemical signals.

D) hormones.

E) neurotransmitters.

5

Norepinephrine and acetylcholine are examples of which of these types of

intercellular chemical signals?

A) autocrine chemical signals

B) pheromones

C) paracrine chemical signals

D) hormones

E) neurotransmitters


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6

Neurohormones are intercellular chemical signals that are

A) produced by groups of cells and affect neurons.

B) released by cells and affect other cell types locally.

C) produced by neurons and act like hormones.

D) released by neurons and stimulate or inhibit other neurons.

7

__________ are released by cells and affect other cell types locally without

being transported in blood.

A) Autocrine chemical signals

B) Pheromones

C) Paracrine chemical signals

D) Hormones

E) Neurotransmitters

8

The lipid hormones are either __________ or derivatives of fatty acids.

A) glycolipids


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B) phospholipids

C) steroids

D) triglycerides

E) glycerols

9

Hormones

A) are not secreted at a constant rate.

B) function to regulate the rates of many activities in the body.

C) secretion rate is controlled by negative feedback mechanisms.

D) help maintain homeostasis.

E) all of these

10

Hormones can be any of these types of molecules EXCEPT

A) proteins.

B) glycoproteins.

C) polypeptides.

D) glycolipids.

E) steroids.


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11

Estrogen, progesterone, testosterone, and glucocorticoids are all examples of

A) proteins.

B) glycoproteins.

C) polypeptides.

D) amino acid derivatives.

E) steroids.

12

Epinephrine, norepinephrine, and thyroid hormones are examples of

A) proteins.

B) glycoproteins.

C) polypeptides.

D) amino acid derivatives.

E) steroids.

13

Increased blood glucose causes increased insulin secretion from the

pancreas. This is an example of

A) hormonal regulation of hormone secretion.

B) neural regulation of hormone secretion.


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C) nonhormonal regulation of hormone secretion.

14

Water-soluble hormones

A) have a long half-life.

B) have a short half-life.

C) bind to intracellular receptors.

D) both a and c

15

Hormones with a short half-life regulate activities that have a __________ onset

with a __________ duration.

A) rapid, long

B) rapid, short

C) slow, long

D) slow, short

16

Given these events:


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1. acetylcholine is released

2. action potentials travel through parasympathetic neurons

3. insulin is secreted

4. pancreatic cells depolarize

Arrange these events in the correct order after parasympathetic neurons are

stimulated.

A) 1,2,3,4

B) 2,4,3,1

C) 2,1,4,3

D) 3,2,1,4

E) 4,2,3,1

17

TRH stimulates the secretion of TSH, which stimulates the secretion of thyroid

hormones. Thyroid hormones inhibit TRH and TSH secretion. This is an

example of

A) hormonal regulation of hormone secretion.

B) neural regulation of hormone secretion.

C) nonhormonal regulation of hormone secretion.

18

Stimulation of the sympathetic division of the autonomic nervous system

during exercise results in secretion of epinephrine and norepinephrine into


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the blood; when exercise ends, the amount of epinephrine and

norepinephrine in the blood decreases rapidly. This is an example of

A) acute hormone regulation.

B) chronic hormone regulation.

C) cyclic hormone regulation.

19

The monthly change in secretion of reproductive hormones that occurs in

women during their reproductive years is an example of

A) acute hormone regulation.

B) chronic hormone regulation.

C) cyclic hormone regulation.

20

Which of these is an example of positive-feedback regulation in the endocrine

system?

A) an increase in blood glucose causes an increase in insulin

secretion; insulin moves glucose into cells

B) an increase in TSH causes an increase in thyroid hormone

secretion; thyroid hormones inhibit TSH secretion

C) before ovulation, an increase in LH causes an increase in

estrogen, which causes an increase in LH

D) an increase in TRH causes an increase in TSH secretion; thyroid

hormone inhibits TRH secretion

E) an increase in blood calcium causes an increase in calcitonin


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secretion; calcitonin moves calcium into the blood.

ANSWER OF QUIZ 2

A C A B E C C C E D E D C B B B B B B B

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