AnswersAnatomy Physiology BCardiovascular System Career Specialties

Cardiovascular System Career Specialties — Unit test Answers

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1
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Insulin is a hormone that travels through the blood and helps regulate blood sugar levels. Which best describes how insulin travels in the blood?

A
in the plasma
B
in the platelets
C
attached to the white blood cells
D
attached to the red blood cells
2
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Travis is taking a long run, and his muscle tissue needs more oxygen. He is breathing heavily and taking in a lot of oxygen. How does this exercise affect circulation?

A
Travis’s heart pumps more quickly to allow oxygen to be removed from the air and transported to the tissue.
B
Travis’s heart pumps more slowly to give the blood cells time to pick up the oxygen and drop it off at the tissues.
C
Travis’s coronary arteries become blocked, so blood travels to other muscles, where it is necessary.
D
Travis’s heart starts angiogenesis so that he has more vessels to transport blood to the tissues.
3

A patient in the emergency room has been in cardiac arrest for three minutes before her heart is restarted. What is the most likely consequence of this episode?

A
The brain will not have received oxygenated blood.
B
The heart will be stronger than before.
C
Death will occur.
D
There will be few if any complications.
4

Examine this diagram of a human heart. What is the structure indicated by the arrow?

Question illustration
A
the pulmonary artery
B
the pulmonary vein
C
the superior vena cava
D
the aorta
5

People who have hemophilia would probably be most concerned about

A
cutting themselves.
B
eating enough folic acid.
C
enlarging tumors.
D
drinking enough water.
6

Which statement about blood disorders is true?

A
They are always acute or short lasting.
B
They typically affect platelets and red and white blood cells.
C
They only involve the malfunction of plasma components.
D
They cannot be passed from one person to another.
7

Talib has the rhinovirus, which is the virus that causes the common cold. If each component of his blood were measured, which component would most likely have a higher concentration than normal?

A
the plasma
B
the erythrocytes
C
the leukocytes
D
the thrombocytes
8

Normal blood pressure is 120/80. Which best describes the blood pressure reading?

A
The systolic pressure is 120, and the diastolic pressure is 80.
B
The diastolic pressure is 120, and the systolic pressure is 80.
C
Systolic pressure is measured when the blood flow resumes as the cuff deflates, so systolic pressure is always the lower number.
D
Diastolic pressure is measured when the blood flow resumes as the cuff deflates, so diastolic pressure is always the lower number.
9

Mr. Duff has been told by his doctor that some of his heart tissue has died due to a lack of blood supply. What is Mr. Duff suffering from?

A
myocardial infarction
B
high blood pressure
C
deoxygenated arteries
D
cardiac arrest
10

What part of the cardiovascular system is directly responsible for nutrient transport?

A
the heart
B
the arteries
C
the veins
D
the blood
11

Gemma lives a very healthy lifestyle. She eats very healthily, runs every day, does not smoke, and does not drink alcohol. What best explains why she has hypertension?

A
She inherited the condition.
B
She does not drink enough water.
C
She sleeps too much.
D
She is pregnant.
12

A patient has arrived at the emergency room with a myocardial infarction. What is this patient most likely suffering from?

A
hypertension
B
coronary disease
C
cardiac dysrhythmias
D
pulmonary embolism
13

There is a medical expert on television discussing the latest advances in implantable cardioverter-defibrillators. What is this device used for?

A
to remove an embolism surgically
B
to treat life-threatening heart rhythms
C
to mechanically widen a clogged artery
D
to reduce heart blood pressure to normal levels

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