Question 1

When the _____ system is at rest, most of the blood is found in the systemic veins and venules.

Accepted Answer

The answer of When the _____ system is at rest,...

Question 2

Identify a consequence that can be attributed to the failure of one of the starling forces.

Accepted Answer

A)   Lymphatic vessels fail to drain excess interstitial fluid.
B)   Fluids from blood fail to pass into interstitial spaces.
C)   Unfiltered plasma proteins pass into the interstitial fluid.
D)   Lymphocytes fail to pass through capillary walls.
E)   Metabolic waste substances pass into the interstitial spaces.

Question 3

What would it mean if net filtration pressure is -5 mmHg?

Accepted Answer

A)   net inward pressure and fluid filtration
B)   net inward pressure and fluid reabsorption
C)   net outward pressure and fluid filtration
D)   net outward pressure and fluid reabsorption

Question 4

Identify the true statement about a metarteriole.

Accepted Answer

A)   It functions as a shunt to help blood avoid the capillaries.
B)   It extends from an artery to a vein.
C)   It is permeable to large substances in the blood.
D)   The metarteriole wall is devoid of a basement membrane.
E)   The metarteriole structure is similar to that of a vein.

Question 5

How does the renin-angiotensin-aldosterone system regulate mean arterial pressure?

Accepted Answer

A)   by producing the hormone angiotensin II
B)   by regulating blood vessel length
C)   by stimulating the production of vasopressin
D)   by inhibiting the activation of β2-adrenergic receptors
E)   by inhibiting the production of aldosterone

Question 6

Mean arterial pressure is likely to decrease when

Accepted Answer

A)   blood vessel radius decreases
B)   blood viscosity decreases
C)   stroke volume increases
D)   heart rate increases
E)   β2-adrenergic receptors are activated

Question 7

Identify the circumstance that is likely to cause the onset of active hyperemia.

Accepted Answer

A)   an individual getting up from a low chair
B)   an individual resting
C)   an individual walking slowly
D)   an individual meditating
E)   an individual jogging before a workout

Question 8

Imagine you have two blood vessels that are identical, except that one is longer than the other. The resistance to blood flow will be greater in the shorter vessel.

Accepted Answer

A) True 
 B)False

Question 9

Identify the correct representation of the flow equation.

Accepted Answer

A)   F = R/∆P
B)   F = ∆P/R
C)   F = ∆P*R
D)   F = ∆P+R
E)   F = R-∆P

Question 10

While examining a patient with a heart condition, the physician notices heart murmurs. Identify the true statement in the context of this scenario.

Accepted Answer

A)   The patient's blood flow is turbulent.
B)   Blood flow to the patient's heart is limited.
C)   There is minimal resistance to the patient's blood flow.
D)   The patient's blood flow is laminar.
E)   The patient's blood flow is intermittent.

Question 11

Arterioles contribute the most resistance to blood flow among all the blood vessels by maintaining blood pressure.

Accepted Answer

A) True 
 B)False

Question 12

Which of the following takes place during vasoconstriction?

Accepted Answer

A)   diameter of the lumen increases
B)   blood pressure drops drastically
C)   smooth muscle cells become tense
D)   vascular resistance increases
E)   mean arterial pressure decreases

Question 13

A disadvantage of using a vasodilator is that

Accepted Answer

A)   it causes contraction of precapillary smooth muscles
B)   it decreases total peripheral resistance
C)   it decreases blood flow through capillary beds
D)   it increases blood pressure
E)   it increases venous return

Question 14

Which of the following blood vessels are collectively known as microcirculation?

Accepted Answer

A)   arteries, veins, and capillaries
B)   arterioles, capillaries, and venules
C)   veins, capillaries, and venules
D)   arterioles, arteries, and capillaries
E)   veins, venules, and arterioles

Question 15

If blood flow is 88 cm3/sec under resting conditions, what is the velocity of blood flow in venules that have a cross-sectional area of 2000 cm2?

Accepted Answer

A)   0.044 cm/sec
B)   0.02 cm/sec
C)   0.22 cm/sec
D)   4.4 cm/sec
E)   2.2 cm/sec

Question 16

An individual with a history of atherosclerosis experiences severe chest pain. He or she is likely to go into a/an

Accepted Answer

A)   obstructive shock
B)   vascular shock
C)   hypovolemic shock
D)   cardiogenic shock
E)   anaphylactic shock

Question 17

A state of partial contraction exhibited by arteriolar smooth muscle is called ____ ____.

Accepted Answer

The answer of A state of partial contraction exhibited by...

Question 18

The pressure difference between the inside and outside walls of a hollow object is known as ____ pressure.

Accepted Answer

The answer of The pressure difference between the inside and...

Question 19

What would be a likely consequence if the endothelial lining of capillary walls included smooth muscle cells and connective tissues?

Accepted Answer

A)   Passage of lymph consisting of lymphocytes would be restricted.
B)   Resistance to blood flow would increase.
C)   The process of milking would be terminated.
D)   Nutrient exchange and waste emission would be limited.
E)   The risk for varicose veins would increase.

Question 20

Identify the structure shown in the image.

Accepted Answer

A)   venules
B)   sinusoids
C)   fenestrated capillaries
D)   metarteriole
E)   arterioles

Exam 15: The Cardiovascular System: Blood Vessels and Hemodynamics

Identify the correct representation of the flow equation.

Correct AnswerverifiedShow Answer

A disadvantage of using a vasodilator is that

Correct AnswerverifiedShow Answer

Identify the structure shown in the image.

Correct AnswerverifiedShow Answer

What would it mean if net filtration pressure is -5 mmHg?

Correct AnswerverifiedShow Answer

Identify the circumstance that is likely to cause the onset of active hyperemia.

Correct AnswerverifiedShow Answer

An individual with a history of atherosclerosis experiences severe chest pain. He or she is likely to go into a/an

Correct AnswerverifiedShow Answer

When the _____ system is at rest, most of the blood is found in the systemic veins and venules.

Correct AnswerverifiedShow Answer

Identify a consequence that can be attributed to the failure of one of the starling forces.

Correct AnswerverifiedShow Answer

The pressure difference between the inside and outside walls of a hollow object is known as ____ pressure.

Correct AnswerverifiedShow Answer

Imagine you have two blood vessels that are identical, except that one is longer than the other. The resistance to blood flow will be greater in the shorter vessel.

Correct AnswerverifiedShow Answer

Arterioles contribute the most resistance to blood flow among all the blood vessels by maintaining blood pressure.

Correct AnswerverifiedShow Answer

While examining a patient with a heart condition, the physician notices heart murmurs. Identify the true statement in the context of this scenario.

Correct AnswerverifiedShow Answer

How does the renin-angiotensin-aldosterone system regulate mean arterial pressure?

Correct AnswerverifiedShow Answer

Which of the following takes place during vasoconstriction?

Correct AnswerverifiedShow Answer

Identify the true statement about a metarteriole.

Correct AnswerverifiedShow Answer

What would be a likely consequence if the endothelial lining of capillary walls included smooth muscle cells and connective tissues?

Correct AnswerverifiedShow Answer

Mean arterial pressure is likely to decrease when

Correct AnswerverifiedShow Answer

Which of the following blood vessels are collectively known as microcirculation?

Correct AnswerverifiedShow Answer

A state of partial contraction exhibited by arteriolar smooth muscle is called ____ ____.

Correct AnswerverifiedShow Answer

If blood flow is 88 cm3/sec under resting conditions, what is the velocity of blood flow in venules that have a cross-sectional area of 2000 cm2?

Correct AnswerverifiedShow Answer

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A state of partial contraction exhibited by arteriolar smooth muscle is called .

Correct Answer
verified

If blood flow is 88 cm³/sec under resting conditions, what is the velocity of blood flow in venules that have a cross-sectional area of 2000 cm²?

Correct Answer
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