Exam (elaborations)
NUR 213 Cardio: Questions With Accurate Answers
NUR 213 Cardio: Questions With Accurate Answers
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NUR 213 Cardio: Questions With Accurate AnswersThe function of the cardiovascular system involves any one or more of the
following functions. check all that apply.
a. oxygen transportation
b. metabolic waste removal
c. hormone transportation
d. neural connectivity
e. CO2 removal Right Ans - a, b, c, e
The cardiovascular system is responsible for the transportation of oxygen and
removal of CO2, the removal of metabolic waste products and the
transportation of hormones. it is not responsible for neural connectivity
The heart is incased in what?
a. the peritoneum
b. the pericardial sac
c. lung tissue
d. it has no encasement Right Ans - b
the heart is incased in the pericardial sac. a connective sac that separates it
from the other internal organs
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 Right Ans - d
the function of the pericardial sac is to provide lubrication to the heart when it
beats
Which is not a layer of the heart?
a. the pericardial layer
b. the myocardium
c. the endocardium
d. the epicardium Right Ans - a
the three layers of the heart are the epicardium, the myocardium and the
endocardium
,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 Right Ans - 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
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 Right Ans - a, c
the tricuspid valve and the mitral valve are closed to prevent backflow of
blood during diastole
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 Right Ans - d
the right coronary artery supplies the inferior and posterior aspects of the left
ventricle, the right ventricle and the right atrium
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 Right Ans - 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
Which factors affect a person’s 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 Right Ans - b, d, e
the factors affecting the cardiac output are the stroke volume, the preload and
the force of the contraction
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 Right Ans - c
the SA node if the natural pacemaker of the healthy heart
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 Right Ans - b, d
distended neck veins mean that the preload of the heart is increased and/or
that there is increased chance of cardiac insufficiency
Which vessels carry deoxygenated blood? select all that apply
a. arteries
b. capillaries
c. venules
d. arterioles
e. veins Right Ans - b, c, d
the capillaries carry both oxygenated and deoxygenated blood to the veins
that carry deoxygenated blood
The sympathetic nervous system:
a. slows the heart rate
b. blocks beta adrenergic receptors on the heart
c. increases the heart rate
d. determines the cardiac output Right Ans - c
the sympathetic nervous system stimulates the beta adrenergic receptors and
increases the heart
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