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