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Unit 03 Exam Review C- Cardiovascular
Test Description: Third in the series
Instructions: Answer all questions to get your test result.
1) Ventricular depolarization
A
occurs after atrial depolarization
B
occurs prior to atrial depolarization
C
appears as the P wave on an ECG
D
appears as the T wave on an ECG
2) Failure of the SA node to depolarize would result in an ECG lacking
A
an isolelectric line
B
QRS complex
C
P wave
D
T wave
3) Within the blood vessels, valves are found in the
A
arterioles
B
arteries
C
vein
D
capillaries
4) MOST of the circulating blood can be found in
A
veins
B
arteries
C
capillaries
D
the liver and spleen
5) bradycardia is
A
first anatomical change associated with atherosclerosis
B
the condition of having a football shaped heart
C
pain indicative of myocardial ischemia
D
slower than normal heart rate
6) which of the following could indicate a recent MI?
A
all of the rest would apply
B
Increased circulating lactate dehydrogenase
C
increased circulation creatine phosphokinase
D
depressed S-T segment on an ECG
7) Ventricular fibrillation
A
is not life threatening
B
occurs when the ventricles contract in a rapid, regular manner
C
occurs when the ventricles contract randomly
D
is induced by defibrilation
8) the cardiac output is equal to the
A
stroke volume / cardiac rate
B
stroke volume X cardiac rate
C
ejection fraction - end diastolic volume
D
end diastolic volume- ejection fraction
9) Norepinephrine, released from __________ nerves, causing heart rate to ______.
A
parasympathetic, increase
B
parasympathetic, decrease
C
sympathetic, decrease
D
sympathetic, increase
10) Norepinephrine and epinephrine open ____ channels inducing a faster pacemaker cell depolarization.
A
fast calcium
B
Voltage gated sodium
C
HCN
D
ligand gated calcium
11) Acetylcholine binds to _______ receptors of the heart and causes the opening of ___ channels.
A
nicotinic, calcium
B
nicotinic, potassium
C
muscarinic, sodium
D
muscarinic, potassium
12) sympathetic stimulation of the heart
A
increase conduction rate
B
increase contractility
C
all of the rest are true
D
increases rate of pacemaker depolarization
13) The ejection fraction is
A
.decreased by sympathetic agonists.
B
increased by parasympathetic agonists.
C
normally about 60% of EDV at rest.
D
the ratio of end diastolic volume to end systolic volume.
14) As cardiac muscle is stretched, it contracts
A
faster
B
less forcibly
C
slower
D
more forcibly
15) __________ is a steroid hormone secreted by the adrenal cortex which stimulates kidney salt reabsorption in the kidneys.
A
Angiotensin
B
Renin
C
Aldosterone
D
ADH
16) Which of the following is NOT a action of angiotensin II to raise blood pressure?
A
causes vasodilation in arterioles
B
stimulates production of aldosterone
C
increases peripheral resistance
D
stimulates the thirst center in the hypothalamus
17) Blood flow is increased by
A
hypotension
B
edema
C
vasoconstriction
D
vasodilation
18) ______ caused by nitric oxide would be an example of paracrine regulation
A
vasodilation
B
vasoconstriction
C
positive chromogenic
D
diaphoresis
19) What allows cardiac muscle to have sufficient oxygen during systole?
A
none of the rest of them are correct
B
small amount of myoglobin
C
few mitochondria
D
low levels of creatine phosphate
20) The last Korotkoff sound occurs when the blood pressure is equal to
A
venous pressure
B
diastolic pressure
C
atmospheric pressure
D
Mean Arterial Pressure
*select an answer for all questions
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