Anat/Phys Cardiovascular System #2 Question Preview (ID: 42130)
Anatomy And Physiology Explorations.
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Which wave of an ECG represents atrial depolarization?
a) P wave
b) Q wave
c) R wave
d) T wave
The T wave represents
a) atrial repolarization.
b) ventricular repolarization.
c) atrial depolarization.
d) ventricular depolarization.
Which ECG wave(s) represent ventricular depolarization?
a) P wave
b) P and Q waves
c) T wave
d) QRS waves
The amount of blood pumped out by each side of the heart in one minute is the
a) stroke volume.
b) cardiac output.
c) ejection fraction.
d) pulse pressure.
The stroke volume is the volume of blood
a) in each atria during diastole.
b) in the systemic circulation.
c) pumped out by a ventricle with each heartbeat.
d) pumped out by an atrium with each heartbeat.
The smallest of all blood vessels are the
a) arteries.
b) venules.
c) arterioles.
d) capillaries.
The tunica of an artery or vein that contains smooth muscle is the
a) initma.
b) media.
c) externa and media.
d) externa.
What structures control the flow of blood through true capillaries?
a) precapillary sphincters
b) postcapillary sphincters
c) valves
d) skeletal muscle
What is a measure of the pressure in arteries at the peak of ventricular contraction?
a) pulse pressure
b) systolic pressure
c) diastolic pressure
d) vital pressure
All of the following affect blood pressure EXCEPT
a) neural factors.
b) renal factors.
c) chemicals.
d) height.
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