A&P blood vessels Questions and
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A patient with essential hypertension might have pressures of 200/120
mm Hg. This hypertensive state could result in all of the following
changes EXCEPT ________.
Ans: decreased size of the heart muscle
A person suddenly gaining significant amounts of adipose tissue can
expect all of the following physiological changes except one. Which
of the following is least likely to occur with a sudden and significant
gain in adipose tissue?
Ans: lower heart rate and reduced blood flow
A thrombus (blood clot) in the first branch of the arch of the aorta
would affect the flow of blood to the ________.
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Ans: right side of the head and neck and right upper arm
An increase in blood viscosity will cause an increase in peripheral
resistance.
Ans: true
An obstruction in the superior vena cava would decrease the flow of
blood from the head and neck to the heart.
Ans: true
Arterial pressure in the pulmonary circulation is much higher than in
the systemic circulation because of its proximity to the heart.
Ans: false
Arteries supplying the same territory are often merged with one
another, forming arterial anastomoses.
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Ans: true
Arteriolar blood pressure increases in response to all but which of the
following?
Ans: falling blood volume
Atherosclerosis causes elastic arteries to become less stretchy. How
does this affect pulse pressure?
Ans: Pulse pressure is chronically decreased.
Blood flow is ________ proportional to the difference in blood
pressure. Blood flow is ________ proportional to the total peripheral
resistance.
Ans: directly; inversely
Blood flow to the skin ________.