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NUR 213 ( LATEST 2024 / 2025 ) TEST 1 | COMPLETE ANSWERS 100% CORRECT
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NUR 213 ( LATEST 2024 / 2025 ) TEST 1 | COMPLETE ANSWERS 100% CORRECT
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NUR 213 Test 11. the function of the cardiovascular system involves any one or more of the following
functions. check all that apply.
a. oxygen transportation
metabolic waste removal
b. hormone transportation
c. neural connectivity
d. CO2 removal
Answer
a, b, c, e
the cardiovascular system is responsible for the transportation of oxygen and re- moval of CO2,
the removal of metabolic waste products and the transportation of hormones. it is not
responsible for neural connectivity
2. the heart is incased in what?
a. the peritoneum
b. the pericardial sac
c. lung tissue
d. it has no encasement
Answer
b
the heart is incased in the pericardial sac. a connective sac that separates it from the other
internal organs
3. what is the function of pericardial sac?
a. to keep foreign antigens from the heart
b. to keep the heart from enlarging
c. to provide nutrients to the heart
d. to provide lubrication for the heart
Answer
d
the function of the pericardial sac is to provide lubrication to the heart when it beats
4. which is not a layer of the heart?
a. the pericardial layer
b. the myocardium
c. the endocardium
d. the epicardium
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,Answer
a
the three layers of the heart are the epicardium, the myocardium and the endocardi- um
5. list in order of the pathway of blood through the heart from deoxygenated to oxygenated
blood.
a. left ventricle
b. right ventricle
c. right atrium
d. left atrium
Answer
d, b, c, a
blood goes from the right atrium to the right ventricle then to the lungs the left atrium and out the
left ventricle
6. which heart valves are closed to prevent backflow of blood into the atria during diastole?
select all that apply
a. tricsupid valve
b. pulmonary valve
c. mitral valve
d. aortic valve
e. pneumonic valve
Answer
a, c
the tricuspid valve and the mitral valve are closed to prevent backflow of blood during diastole
7. what artery supplies the back of the left ventricle, the inferior of the left ventricle, the right
ventricle, and the right atrium?
a. left main coronary artery
b. left anterior descending artery
c. circumflex artery
d. right coronary artery
Answer
d
the right coronary artery supplies the inferior and posterior aspects of the left ventricle, the right
ventricle and the right atrium
8. what is the cardiac output?
a. the amount of blood ejected from the left ventricle in one beat
b. the amount of blood ejected from each ventricle in one minute
c. the amount of blood ejected from both atria and ventricles per beat
d. the amount of blood entering the lungs per minute
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,Answer
b
the cardiac output is the amount of blood ejected from each ventricle in one minute. the normal
value is 4-8 liters per minute
9. which factors affect a persons cardiac output? select all that apply
a. the oxygenation of blood
b. the stroke volume
c. the blood volume
d. the preload
e. the force of the contraction
Answer
b, d, e
the factors affecting the cardiac output are the stroke volume, the preload and the force of the
contraction
10. the natural pacemaker of the heart is what?
a. the AV node
b. the purkinje fibers
c. the SA node
d. the bundle of His
Answer
c
the SA node if the natural pacemaker of the healthy heart
11. distended neck veins mean what? select all that apply
a. decreased preload
b. increased preload
c. increased cardiac output
d. possible cardiac insufficiency
e. rapid heart rate
Answer
b, d
distended neck veins mean that the preload of the heart is increased and/or that there is
increased chance of cardiac insufficiency
12. which vessels carry deoxygenated blood? select all that apply
a. arteries
b. capillaries
c. venules
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, d. arterioles
e. veins
Answer
b, c, d
the capillaries carry both oxygenated and deoxygenated blood to the veins that carry deoxygenated
blood
13. the sympathetic nervous system
Answer
a. slows the heart rate
b. blocks beta adrenergic receptors on the heart
c. increases the heart rate
d. determines the cardiac output
Answer
c
the sympathetic nervous system stimulates the beta adrenergic receptors and increases the heart
14. which are true regarding heart sounds? select all that apply
a. diastole occurs between s1 and s2
b. systole occurs during s1 and s2
c. murmurs indicate vascular turbulence
d. the time between s1 and s2
e. s2 is occasionally absent
Answer
b, c
systole occurs between s1 and s2 and murmurs represent areas of vascular turbu- lence
15. you are briefly assessing a patient for his risk of stroke. what easy test can you do?
a. check for cardiac bruit
b. assess speech function
c. do a carotid ultrasound
d. examine the patient for hemiparesis
Answer
a
a simple test for risk of stroke is to examine the patients carotid arteries with a stethoscope in
order to listen for the presence of a carotid bruit
16. the doctor tells you the patient has a grade IV heart murmur. what does that mean?
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