AnswersBiology - SC3209 ICThe Endocrine and Exocrine Systems

The Endocrine and Exocrine Systems — Unit test Answers

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The nervous system is a part of the autonomic system that conserves energy by returning the body to a normal activity level through a lowered heart rate and blood pressure.

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Which of the following statements best describes the role of hormones in the body?

A
Hormones send chemical signals throughout the body to regulate other body processes.
B
Hormones are chemical signals that are sent throughout the body to regulate other body processes.
C
Hormones send electrical signals throughout the body to regulate other body processes.
D
Hormones are electrical signals that are sent throughout the body to regulate other body processes.
43

The lungs, nose, and trachea are organs of the respiratory system. Which best describes these organs?

A
They deliver nutrients to the other tissues.
B
They deliver oxygen to the blood.
C
They are both used for support.
D
They help break down food.
44

The graph shows the changing levels of hormones during menstruation and ovulation. In general, what happens to the hormone levels between days 21 and 27, just prior to menstruation if the egg was not fertilized?

Question illustration
A
Hormone levels generally decrease.
B
Hormone levels generally rise.
C
Hormone levels remain the same.
D
Hormone levels go in two different directions.
45

Once the body has begun shivering, what happens to make it stop shivering?

A
When body temperature returns to normal, the respiratory system sends a message to the skeletal system to stop shivering.
B
When body temperature returns to normal, the nervous system sends a message to the muscular system to stop shivering.
C
When body temperature is below normal, the nervous system sends a message to the skeletal system to stop shivering.
D
When body temperature is below normal, the respiratory system sends a message to the muscular system to stop shivering.
46

Which causes a drop in female hormone levels?

A
the onset of the menstrual flow
B
the release of an egg from the ovary
C
the thickening of the uterine wall
D
the failure of an egg to be fertilized
47

Which injury would likely cause the body to permanently lose the ability to perform simple reflexes?

A
damage to the nerve cells in the spinal cord
B
a muscle tear in the leg
C
the death of a single neuron in the body
D
harm to a nerve in the skin
48

A team of scientists is working to formulate a drug that can treat children who are diagnosed with gigantism. Which effect should the drug have on patients?

A
starts the secretion of substances from the adrenal gland that decrease growth
B
increases the secretion of substances from the reproductive glands that stop growth
C
stops the secretion of substances from the thyroid gland that cause growth
D
decreases the secretion of substances from the pituitary gland that cause growth
49

Which product of respiration is considered waste material and leaves the alveoli?

A
oxygen
B
water
C
carbon dioxide
D
carbon monoxide
50

Which is a function of the central nervous system?

A
pumping blood through the body
B
controlling coordination in the body
C
fighting bacteria that enter the body
D
breaking down carbohydrates in the body

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