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Multiple Choice Feedback Quiz
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1

Which one of the following is not a major class of chemical messengers?
A)hormones
B)second messengers
C)rhodopsin
D)neurotransmitters
2

Which one of the following is not an advantage of chemical messengers over electrical signals?
A)Chemical molecules initiate faster responses.
B)Chemical molecules can spread to all tissues.
C)Chemical signals can persist longer.
D)Different chemicals can target different tissues.
3

Second messengers are triggered as a response to
A)steroid hormones.
B)anabolic steroids.
C)peptide hormones.
D)all of the above
4

Which one of the following is a second messenger?
A)TRH
B)anabolic steroids
C)peptide steroids
D)AMP
5

The hormone responsible for male secondary sexual characteristics is
A)growth hormone.
B)follicle-stimulating hormone.
C)thyroid-stimulating hormone.
D)luteinizing hormone.
6

Two hormones produced by the thyroid gland are thyroxin and
A)oxytocin.
B)calcitonin.
C)melatonin.
D)cortisol.
7

The essential hormone that regulates the level of calcium in your blood is produced by the
A)adrenals.
B)pituitary.
C)thymus.
D)parathyroids.
8

The two hormones that act as extensions of the sympathetic nervous system are
A)thyroxin and calcitonin.
B)adrenaline and norepinephrine.
C)insulin and glucagon.
D)cortisol and aldosterone.
9

The two endocrine hormones essential for survival are
A)aldosterone and PTH.
B)GH and LH.
C)insulin and glucagon.
D)calcitonin and thyroxin.
10

Which one of the following functions both as an endocrine gland and an exocrine gland?
A)adrenal glands
B)parathyroid glands
C)pancreas
D)pituitary gland
11

Exocrine glands are responsible for the production of hormones.
A)true
B)false
12

The main "switchboard" of the neuroendocrine system is the pituitary gland.
A)true
B)false
13

Specific protein receptors in the membranes of cells determine which hormone will activate the response by that tissue.
A)true
B)false
14

Vasopressin and oxytocin are produced in the posterior pituitary.
A)true
B)false
15

Alpha-cells in the islets of Langerhans in the pancreas produce the hormone insulin.
A)true
B)false
16

Glucagon promotes the accumulation of glycogen in the liver.
A)true
B)false
17

About 90% of the people in the United States who develop type II diabetes are obese.
A)true
B)false
18

Aldosterone helps the kidneys maintain the proper balance of sodium and potassium ions in the body.
A)true
B)false
19

Peptide hormones enter a target cell and trigger a series of reactions that alter cell functions.
A)true
B)false
20

The neuroendocrine system is made up of the motor nervous system and the endocrine system.
A)true
B)false





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