Question 1

Which tunic of an artery contains endothelium?

Accepted Answer

A)  basement membrane
B)  tunica media
C)  tunica externa
D)  tunica intimaE) B) and C)
F) All of the above

Question 2

shock is due to abnormal expansion of blood vessels and a rapid drop in blood pressure.

Accepted Answer

The answer of shock is due to abnormal expansion of...

Question 3

The abdominal aorta divides into three arteries at its terminus; what are they?

Accepted Answer

Left and right commo...

Question 4

As a blood pressure cuff is deflated on the arm,sounds of can be heard.

Accepted Answer

The answer of As a blood pressure cuff is deflated...

Question 5

Cerebral blood flow is regulated by _.

Accepted Answer

A)  intrinsic autoregulatory mechanisms
B)  skin temperature
C)  ADH
D)  the hypothalamic "thermostat"E) B) and C)
F) B) and D)

Question 6

Blood flow to the skin _ .

Accepted Answer

A)  increases when environmental temperature rises
B)  is not an important source of nutrients and oxygen for skin cells
C)  is controlled mainly by decreasing pH
D)  increases when body temperature drops so that the skin does not freezeE) A) and C)
F) A) and D) A

Question 7

In the dynamics of blood flow through capillaries,hydrostatic pressure .

Accepted Answer

A)  is the same as capillary blood pressure
B)  generally forces fluid from the interstitial space into the capillaries
C)  and osmotic pressure are the same
D)  is completely canceled out by osmotic pressureE) A) and C)
F) All of the above

Question 8

Which tunic of an artery is most responsible for maintaining blood pressure and continuous blood circulation?

Accepted Answer

A)  tunica media
B)  tunica intima
C)  basement membrane
D)  tunica externaE) A) and C)
F) None of the above

Question 9

Aldosterone will _ _.

Accepted Answer

A)  decrease sodium reabsorption
B)  promote a decrease in blood volume
C)  promote an increase in blood pressure
D)  result in a larger output of urineE) None of the above
F) A) and B)

Question 10

Which of the following are involved directly in pulmonary circulation?

Accepted Answer

A)  right ventricle,pulmonary artery,and left atrium
B)  superior vena cava,right atrium,and left ventricle
C)  left ventricle,aorta,and inferior vena cava
D)  right atrium,aorta,and left ventricleE) B) and C)
F) C) and D)

Question 11

Which of the following is likely during vigorous exercise?

Accepted Answer

A)  Capillaries of the active muscles will be engorged with blood.
B)  The skin will be cold and clammy.
C)  Blood flow to the kidneys increases.
D)  Blood will be diverted to the digestive organs.E) A) and B)
F) A) and C)

Question 12

Which of the choices below explains why the arterioles are known as resistance vessels?

Accepted Answer

A)  They distribute blood to various parts of the body.
B)  Their prime function is the exchange of nutrients and wastes between the blood and tissue cells.
C)  The contraction and relaxation of the smooth muscle in their walls can change their diameter.
D)  They contain a large quantity of elastic tissue.E) A) and B)
F) A) and C)

Question 13

Arterial provide alternate pathways for blood to get to an organ.

Accepted Answer

anastomoses

Question 14

Secondary hypertension can be caused by .

Accepted Answer

A)  stress
B)  smoking
C)  obesity
D)  arteriosclerosisE) B) and C)
F) A) and B) D

Question 15

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 .

Accepted Answer

A)  increased damage to blood vessel endothelium
B)  increased work of the left ventricle
C)  increased incidence of coronary artery disease
D)  decreased size of the heart muscleE) A) and C)
F) A) and D)

Question 16

Mechanisms that do not help regulate blood pressure include .

Accepted Answer

A)  chemical controls such as atrial natriuretic peptide
B)  renal regulation via the renin- angiotensin system of vasoconstriction
C)  nervous control that operates via reflex arcs involving baroreceptors,chemoreceptors,and higher brain centers
D)  the dural sinus reflexE) A) and C)
F) None of the above

Question 17

The baroreceptors in the carotid sinus and aortic arch are sensitive to which of the following?

Accepted Answer

A)  an increase in oxygen levels
B)  changes in arterial pressure
C)  a decrease in oxygen levels
D)  a decrease in carbon dioxideE) None of the above
F) B) and C)

Question 18

Define vasoconstriction and vasodilation.What is the mechanism of regulation?

Accepted Answer

Vasoconstriction is a reduction in the l...

Question 19

Modified capillaries that are lined with phagocytes are called _ .

Accepted Answer

A)  anastomoses
B)  sinuses
C)  sinusoids
D)  thoroughfare channelsE) B) and C)
F) None of the above

Question 20

The pulse pressure is .

Accepted Answer

A)  systolic pressure plus diastolic pressure
B)  systolic pressure divided by diastolic pressure
C)  systolic pressure minus diastolic pressure
D)  diastolic pressure plus 1/3 systolic pressure plus diastolic pressure) E) A) and B)
F) A) and C)

Exam 18: The Cardiovascular System: Blood Vessels

Which tunic of an artery contains endothelium?

Correct AnswerverifiedShow Answer

shock is due to abnormal expansion of blood vessels and a rapid drop in blood pressure.

Correct AnswerverifiedShow Answer

The abdominal aorta divides into three arteries at its terminus; what are they?

Correct AnswerverifiedLeft and right commo...View AnswerShow Answer

As a blood pressure cuff is deflated on the arm,sounds of can be heard.

Correct AnswerverifiedShow Answer

Cerebral blood flow is regulated by _.

Correct AnswerverifiedShow Answer

Blood flow to the skin _ .

Correct AnswerverifiedA

In the dynamics of blood flow through capillaries,hydrostatic pressure .

Correct AnswerverifiedShow Answer

Which tunic of an artery is most responsible for maintaining blood pressure and continuous blood circulation?

Correct AnswerverifiedShow Answer

Aldosterone will _ _.

Correct AnswerverifiedShow Answer

Which of the following are involved directly in pulmonary circulation?

Correct AnswerverifiedShow Answer

Which of the following is likely during vigorous exercise?

Correct AnswerverifiedShow Answer

Which of the choices below explains why the arterioles are known as resistance vessels?

Correct AnswerverifiedShow Answer

Arterial provide alternate pathways for blood to get to an organ.

Correct Answerverifiedanastomoses

Secondary hypertension can be caused by .

Correct AnswerverifiedD

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 .

Correct AnswerverifiedShow Answer

Mechanisms that do not help regulate blood pressure include .

Correct AnswerverifiedShow Answer

The baroreceptors in the carotid sinus and aortic arch are sensitive to which of the following?

Correct AnswerverifiedShow Answer

Define vasoconstriction and vasodilation.What is the mechanism of regulation?

Correct AnswerverifiedVasoconstriction is a reduction in the l...View AnswerShow Answer

Modified capillaries that are lined with phagocytes are called _ .

Correct AnswerverifiedShow Answer

The pulse pressure is .

Correct AnswerverifiedShow Answer

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Left and right commo...
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A

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anastomoses

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D

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Vasoconstriction is a reduction in the l...
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