WorksheetsPhysiology of the Heart
Total questions: 15
Worksheet time: 8mins
The length of the cardiac cycle is normally _____ second (s) in length.
0.3
2
0.8
4
Which term means heart contraction?
tachycardia
diastole
fibrillation
systole
The normal resting heart rate is about _____ times per minute.
75
105
35
50
What term refers to the volume of blood pumped out of a ventricle with each heart beat?
heart rate (HR)
stroke volume (SV)
blood pressure (BP)
cardiac output (CO)
The alternating expansion and recoil of an artery that occurs with each beat of the left ventricle creates a pressure wave known as
cardiac output
a pulse
pressure point
stroke volume
Sustained elevated arterial blood pressure above 140/90 mm Hg is a condition known as
myocardial infarction
orthostatic hypotension
circulatory shock
hypertension
An incompetent aortic semilunar valve would allow blood to backflow from the
aorta to the left atrium
left ventricle to the left atrium
aorta to the left ventricle
right ventricle to the right atrium
The atrioventricular valves are closed when
atrial pressure is greater than ventricular pressure
the atria contract
the ventricles fill with blood
atrial pressure is less than ventricular pressure
The heart sounds "lub" and "dup" result from
blood rushing through the chambers
closure of the heart valves
opening of the heart valves
contraction of the heart
The friction blood encounters as it flows through the vessels is called
blood pressure
peripheral resistance
cadiac output
stroke volume
The circuit from the left ventricle through the body tissues and back to the right atrium is called the __________ circulation.
cardiac
coronary
systemic
pulmonary
Cardiac muscle cells can and do contract spontaneously and independently even if ALL nervous system connections are severed.
True
False
Which two systems act to regulate heart activity?
intrinsic conduction system and the autonomic nervous system
sensory division and the somatic nervous system
intrinsic conduction system and the somatic nervous system
autonomic nervous system and sensory system
Abnormal or unusual heart sounds are called
Bradycardia
heart murmurs
tachycardia
arteriosclerosis
The correct sequence of layers of a typical blood vessel, from superficial to deep, are
tunica intima, tunica media, tunica externa
tunica media, tunica intima, tunica externa
tunica externa, tunica media, tunica intima
tunica media, tunica externa, tunica intima
