AnswersAnatomy Physiology BCardiovascular System Career Specialties

Cardiovascular System Career Specialties — Unit test Answers

25 verified answers1 views
1
Free Preview

Pulmonary circulation is the key component that supports both respiratory and cardiovascular systems. Examine this diagram of a human heart as seen while looking at the front of the body. Which correctly identifies where the blood is flowing to and from?

Question illustration
A
A: lower body, B: left lung, C: right lung, D: upper body
B
A: upper body, B: right lung, C: left lung, D: lower body
C
A: right lung, B: upper body, C: lower body, D: left lung
D
A: left lung, B: lower body, C: upper body, D: right lung
2
Free Preview

Magali’s doctor tells her the decongestant she has been taking for her cold has affected her blood pressure. What explains the relationship between this type of medicine and hypertension?

A
A decongestant causes blood vessels to narrow, increasing blood pressure.
B
A decongestant causes blood vessels to expand, decreasing blood pressure.
C
A decongestant causes blood to become thinner, decreasing blood pressure.
D
A decongestant causes blood to become thicker, increasing blood pressure.
3

The cardiovascular system is composed of the heart, blood vessels, and blood. Which is the best analogy to this system and its parts?

A
a car engine, a gas tank, and gasoline
B
a coffee maker, coffee filters, and coffee
C
a water pump, water pipes, and water
D
a can of paint, the pressure of a hand, and paint
4

Which upper chamber of the heart contains oxygen-rich blood?

A
the right atrium
B
the left atrium
C
the right ventricle
D
the left ventricle
5

The “pacemaker” of the heart starts an electrical impulse in the right atrium to cause the atria to contract. What is the “pacemaker” of the heart?

A
the SA node
B
the AV node
C
the bundle of His
D
the Purkinje fibers
6

Which of these should be avoided in order to prevent heart diseases and disorders?

A
yoga and meditation
B
fruits and vegetables
C
drugs and alcohol
D
jogging and skating
7

Which of these is an uncontrollable risk factor for myocardial infarction?

A
obesity and lack of exercise
B
type 2 diabetes
C
congenital heart deformities
D
high-stress lifestyle
8

The table lists general categories of blood disorders. Some information is missing, as shown by the letters X, Y, and Z.Categories of Blood DisordersType of disorderPrimary impact on the bodyReduced platelet countsXYDeprives cells of oxygenReduced WBC countsZWhich list correctly completes the table in the order X, Y, Z?

A
RBC malfunction, internal or external bleeding, reduced ability to fight infection
B
reduced ability to fight infection, RBC malfunction, internal or external bleeding
C
internal or external bleeding, RBC malfunction, reduced ability to fight infection
D
internal or external bleeding, reduced ability to fight infection, RBC malfunction
9

What happens in the red blood cells in the lungs?

A
Hemoglobin drops off oxygen and picks up carbon dioxide.
B
Hemoglobin drops off carbon dioxide and picks up oxygen.
C
Hemoglobin picks up both carbon dioxide and oxygen.
D
Hemoglobin drops off both carbon dioxide and oxygen.
10

Anajali is studying for her Health Science test, and she needs to remember the sequence of events that lead to cardiac arrest. Which is the correct sequence?i. The heart beats erratically and often stops completely.ii. Ischemia progresses to an infarction.iii. Blockages occur in the right and left coronary arteries.iv. Insufficient blood supply to the heart happens.

A
i, ii, iii, iv
B
ii, vi, i, iii
C
iii, iv, ii, i
D
iv, i, ii, iii
11

Some blood vessels transport blood away from the heart, while others transport blood to the heart. Which blood vessel is labeled B, and what is its function?

Question illustration
A
the superior vena cava; transports oxygen-rich blood to the bottom half of the body
B
the pulmonary vein; carries oxygen-rich blood from the lung to the left atrium of the heart
C
the coronary artery; provides blood to the walls of the heart
D
the inferior vena cava; transports oxygen-rich blood to the top half of the body
12

Recall the three layers of muscles in the wall of the heart. Which lists these muscles in order from closest to the blood inside the chamber to farthest from the blood?

A
epicardium, myocardium, endocardium
B
myocardium, endocardium, epicardium
C
endocardium, myocardium, epicardium
D
endocardium, epicardium, myocardium
13

The diagram below illustrates the gas exchange that occurs in the alveoli. Image by Helix84Where is the oxygen-rich blood flowing to?

Question illustration
A
the lungs
B
the upper body
C
the lower body
D
the heart
14

Dr. Jamani suspects that her patient is suffering from deep vein thrombosis. What can this condition lead to?

A
hypertension
B
coronary disease
C
cardiac dysrhythmias
D
pulmonary embolism
15

Rosali is suffering from severe chest pain, severe dizziness, and tightening of neck and jaw muscles. After a few moments, these symptoms subside. What should Rosali do?

A
Drive herself to the emergency room as soon as possible.
B
Get some rest and drink plenty of fluids.
C
Call 9-1-1, or have a friend drive her to the hospital.
D
Engage in exercise to get her heart rate up.
16

Which of these are common symptoms during a myocardial infarction?

A
heartburn, chest pain, and pain in left arm
B
heartburn, back pain, and tingling feet
C
headache, chest pain, and tingling feet
D
headache, back pain, and pain in left arm
17

Consider the blood vessels pictured below. Which statement best explains this type of blood vessel and the function of these vessels’ valves?

Question illustration
A
These are arteries, which prevent the backflow of blood because the walls have little muscle to pump blood back to the heart.
B
These are veins, which prevent the backflow of blood because the walls have little muscle to pump blood back to the heart.
C
These are arteries, which prevent the backflow of blood because the walls have little muscle to pump blood into the capillaries.
D
These are veins, which prevent the backflow of blood because the walls have little muscle to pump blood into the capillaries.
18

Below is a picture of a structure of the heart. What is the best description of the function of this structure?

Question illustration
A
It pumps blood from the right ventricle into the right atrium.
B
It pumps blood from the left ventricle into the left atrium.
C
It prevents the backflow of blood from the right ventricle into the right atrium.
D
It prevents the backflow of blood from the left ventricle into the left atrium.
19

When the blood flows through the capillary bed, most of the plasma will return to the heart through the venules. What happens to the plasma that does not travel to the venules?

A
It is removed by the lymphatic vessels.
B
It is lost as heat.
C
It returns to the arterioles.
D
It stays in the capillary bed.
20

Which is the proper order for blood traveling through the systemic circuit?

A
venae cavae arteries venules capillaries arterioles veins aorta
Option A
B
venae cavae arteries arterioles capillaries venules veins aorta
Option B
C
aorta arterioles arteries capillaries veins venules venae cavae
Option C
D
aorta arteries arterioles capillaries venules veins venae cavae
Option D

Did you find these answers helpful?

More from this Course

Quiz
25 verified answers

Unit Test

Quiz
25 verified answers

Unit Test

Quiz
25 verified answers

Unit Test

Cardiovascular System Career Specialties — Unit…