Unit 03 Exam Review C- Cardiovascular Question Preview (ID: 37274)


Third In The Series. TEACHERS: click here for quick copy question ID numbers.

______ caused by nitric oxide would be an example of paracrine regulation
a) vasodilation
b) vasoconstriction
c) positive chromogenic
d) diaphoresis

Blood flow is increased by 
a) hypotension
b) vasodilation
c) vasoconstriction
d) edema

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

__________ is a steroid hormone secreted by the adrenal cortex which stimulates kidney salt reabsorption in the kidneys. 
a) Aldosterone
b) Renin
c) Angiotensin
d) ADH

As cardiac muscle is stretched, it contracts
a) more forcibly
b) less forcibly
c) faster
d) slower

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.

sympathetic stimulation of the heart
a) increases rate of pacemaker depolarization
b) increase contractility
c) increase conduction rate
d) all of the rest are true

Acetylcholine binds to _______ receptors of the heart and causes the opening of ___ channels.
a) muscarinic, potassium
b) nicotinic, potassium
c) muscarinic, sodium
d) nicotinic, calcium

Norepinephrine and epinephrine open ____ channels inducing a faster pacemaker cell depolarization. 
a) HCN
b) Voltage gated sodium
c) fast calcium
d) ligand gated calcium

Norepinephrine, released from __________ nerves, causing heart rate to ______.
a) sympathetic, increase
b) parasympathetic, decrease
c) sympathetic, decrease
d) parasympathetic, increase

the cardiac output is equal to the
a) stroke volume X cardiac rate
b) stroke volume / cardiac rate
c) end diastolic volume- ejection fraction
d) ejection fraction - end diastolic volume

Ventricular fibrillation
a) occurs when the ventricles contract in a rapid, regular manner
b) occurs when the ventricles contract randomly
c) is induced by defibrilation
d) is not life threatening

which of the following could indicate a recent MI?
a)  Increased circulating lactate dehydrogenase
b) increased circulation creatine phosphokinase
c) depressed S-T segment on an ECG
d) all of the rest would apply

bradycardia is
a) slower than normal heart rate
b) pain indicative of myocardial ischemia
c) first anatomical change associated with atherosclerosis
d) the condition of having a football shaped heart

Within the blood vessels, valves are found in the 
a) vein
b) arterioles
c) capillaries
d) arteries

MOST of the circulating blood can be found in 
a) veins
b) capillaries
c) arteries
d) the liver and spleen

Failure of the SA node to depolarize would result in an ECG lacking
a) P wave
b) T wave
c) QRS complex
d) an isolelectric line

Ventricular depolarization 
a) occurs prior to atrial depolarization
b) appears as the T wave on an ECG
c) appears as the P wave on an ECG
d) occurs after atrial depolarization

What allows cardiac muscle to have sufficient oxygen during systole?  
a) small amount of myoglobin
b) few mitochondria
c) low levels of creatine phosphate
d) none of the rest of them are correct

The last Korotkoff sound occurs when the blood pressure is equal to 
a) diastolic pressure
b) atmospheric pressure
c) Mean Arterial Pressure
d) venous pressure

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