BIOS255CVS Quiz-1
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CUNY Borough of Manhattan Community College *
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Course
255
Subject
Chemistry
Date
Jan 9, 2024
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docx
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BIOS255-CVS1
Multiple Choice
Identify the choice that best completes the statement or answers the question.
____
1.
The heart valves are arranged with the:
a.
mitral and pulmonary semilunar valves on the right side of the heart
b.
bicuspid and aortic semilunar valves on the right side of the heart
c.
tricuspid and pulmonary semilunar valves on the right side of the heart
d.
tricuspid and aortic semilunar valves on the left side of the heart
____
2.
The first heart sound is the closing of the:
a.
pulmonary semilunar and aortic semilunar valves
b.
tricuspid and mitral valves
c.
mitral and bicuspid valves
d.
tricuspid and pulmonary semilunar valves
____
3.
The right side of the heart:
a.
deals with oxygen-poor blood
b.
deals with oxygen-rich blood
c.
is the pump for systemic circulation
d.
both B and C above
____
4.
The correct sequence for the conducting system is:
a.
sinoatrial node, AV bundle, Purkinje fibers, bundle of His
b.
sinoatrial node, AV node, AV bundle, Purkinje fibers
c.
sinoatrial node, bundle of His, AV bundle, Purkinje fibers
d.
sinoatrial node, Purkinje fibers, AV bundle, AV node
____
5.
In a normal ECG tracing, the T wave represents the:
a.
repolarization of the atria
b.
depolarization of the atria
c.
repolarization of the ventricles
d.
depolarization of the ventricles
____
6.
With which of the following is “lubb-dupp” associated?
a.
Myocardial contraction
b.
Ventricular depolarization
c.
Closing of heart valves
d.
Diffusion of O
2
from the lungs to the blood in the pulmonary capillaries
____
7.
The pacemaker of the heart is located in the upper wall of the
a.
right atrium.
b.
right ventricle.
c.
left atrium.
d.
left ventricle.
____
8.
What are the conducting fibers that rapidly spread the electrical signal throughout the ventricles?
a.
Bundle of His
b.
Purkinje fibers
c.
SA node
d.
AV node
____
9.
The purpose of which structure is to delay the spread of the signal from the atrium to the ventricles?
a.
SA node
b.
Purkinje fibers
c.
Bundle of His
d.
AV node
____
10.
Under what condition is blood most likely to flow “backward” (e.g., from the left ventricle back into
the left atrium)?
a.
Pulmonary artery hypertension
b.
Left ventricular hypertrophy
c.
An insufficient mitral valve
d.
Pulmonary edema
____
11.
What are ventricles “doing” during atrial contraction?
a.
Pumping blood into the great vessels
b.
Closing their AV valves
c.
Relaxing
d.
Opening their semilunar valves
____
12.
Which structure “sees” oxygenated blood?
a.
Tricuspid valve
b.
Pulmonary artery
c.
Pulmonary veins
d.
Right semilunar valve
____
13.
During ventricular filling, the
a.
semilunar valves are open.
b.
AV valves are closed.
c.
QRS complex is “happening.”
d.
ventricles are relaxed.
____
14.
During atrial systole, the
a.
AV valves are closed.
b.
ventricles are relaxed.
c.
ventricles are in systole.
d.
semilunar valves are open.
____
15.
What happens during ventricular diastole?
a.
The ventricles are filling with blood.
b.
All semilunar valves are open.
c.
Both AV valves are closed.
d.
Blood is pumped to the lungs and systemic circulation.
____
16.
Which of the following is responsible for the Starling effect?
a.
Sympathetic nerve firing
b.
Vagal discharge
c.
Activation of the beta
1
-adrenergic receptors
d.
End-diastolic volume (EDV) or preload
____
17.
What term refers to the amount of blood pumped by the ventricle in one beat?
a.
Cardiac output
b.
Blood volume
c.
Hematocrit
d.
Stroke volume
____
18.
Which term refers to the amount of blood pumped by the heart in 1 minute?
a.
Stroke volume
b.
Cardiac output
c.
Starling’s law of the heart
d.
Inotropic effect
____
19.
Vagal stimulation to the heart causes
a.
a (+) inotropic effect.
b.
heart rate to slow.
c.
cardiac output to increase.
d.
stroke volume to increase.
____
20.
Which of the following is descriptive of the vagus nerve?
a.
Fight-or-flight
b.
Parasympathetic
c.
Sympathetic
d.
Adrenergic
____
21.
Heart rate and stroke volume determine
a.
hematocrit.
b.
total blood volume.
c.
cardiac output.
d.
the size of the heart valves.
____
22.
Decreased blood flow through the coronary arteries is most likely to cause
a.
valve damage.
b.
pulmonary edema.
c.
angina pectoris.
d.
bradycardia.
____
23.
Which of the following contains 70 mL?
a.
The cardiac output
b.
The volume of a ventricle
c.
An average stroke volume
d.
The amount of blood that flows through the pulmonary capillaries in one minute
____
24.
The amount of blood in the ventricle at the end of its resting phase is the
a.
end-diastolic volume (EDV).
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b.
the amount of blood in the ventricle at the end of its resting phase
c.
preload.
d.
All of the above are true.
____
25.
Starling’s law of the heart relates force of myocardial contraction with
a.
heart rate.
b.
preload.
c.
end-systolic volume.
d.
blood pressure.
BIOS255-CVS1
Answer Section
MULTIPLE CHOICE
1.
ANS: C
PTS:
1
DIF:
Memorization
REF:
Page: 305
TOP:
Heart valves
2.
ANS: B
PTS:
1
DIF:
Memorization
REF:
Page: 305
TOP:
Heart sounds
3.
ANS:
A
PTS:
1
DIF:
Application
REF:
Page: 307
TOP:
Blood flow through the heart
4.
ANS:
B
PTS:
1
DIF:
Application
REF:
Page: 310
TOP:
Conduction system of the heart
5.
ANS: C
PTS:
1
DIF:
Memorization
REF:
Page: 310
TOP:
Electrocardiogram
6.
ANS: C
PTS:
1
7.
ANS: A
PTS:
1
8.
ANS: B
PTS:
1
9.
ANS: D
PTS:
1
10.
ANS: C
PTS:
1
11.
ANS: C
PTS:
1
12.
ANS: C
PTS:
1
13.
ANS: D
PTS:
1
14.
ANS: B
PTS:
1
15.
ANS: A
PTS:
1
16.
ANS: D
PTS:
1
17.
ANS: D
PTS:
1
18.
ANS: B
PTS:
1
19.
ANS: B
PTS:
1
20.
ANS: B
PTS:
1
21.
ANS: C
PTS:
1
22.
ANS: C
PTS:
1
23.
ANS: C
PTS:
1
24.
ANS: D
PTS:
1
25.
ANS: B
PTS:
1
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