Question 1

Which of the following can cause vasoconstriction?

Accepted Answer

A)   increase in carbon dioxide
B)   release of nitric oxide
C)   increase in osmolarity
D)   angiotensin II
E)   increase in histamineF) C) and D)
G) A) and B)

Question 2

Mean arterial pressure can be increased by all of the following EXCEPT

Accepted Answer

A)   increasing venous return.
B)   increasing blood volume.
C)   increasing heart rate.
D)   increasing sympathetic activity.
E)   decreasing end -diastolic volume.F) A) and B)
G) A) and C)

Question 3

Veins functions as_________ reservoirs due to their  ________compliance.

Accepted Answer

A)   volume : high
B)   volume : low
C)   pressure : high
D)   pressure : low
E)   pressure : lack ofF) A) and C)
G) C) and D)

Question 4

What type of adrenergic receptor is found in the smooth muscle of most systemic arterioles?

Accepted Answer

A)   alpha only
B)   beta1 only
C)   beta2 only
D)   beta3 only
E)   both alpha and beta1F) A) and B)
G) B) and E)

Question 5

What is the purpose of extrinsic control of arteriolar smooth muscle contractile activity?

Accepted Answer

A)   regulate cardiac output
B)   regulate blood flow through specific capillary beds
C)   regulate mean arterial pressure
D)   regulate heart rate
E)   regulate stroke volumeF) B) and E)
G) C) and E)

Question 6

Which of the following does NOT occur in response to baroreceptors detecting an increase in mean arterial pressure?

Accepted Answer

A)   decreased end -diastolic volume
B)   decreased heart rate
C)   vasoconstriction
D)   decreased venous compliance
E)   decreased frequency of sinoatrial node action potentialsF) D) and E)
G) B) and D)

Question 7

Flow autoregulation refers to an organ's ability to maintain perfusion pressure in the presence of a range of blood flows.

Accepted Answer

A) True 
 B)False

Question 8

The reduction in organ blood flow that results from a decrease in mean arterial pressure would be exacerbated by the_______ that occurs as a consequence of the baroreceptor reflex.

Accepted Answer

A)   increased stroke volume
B)   decreased compliance of the veins
C)   increased ventricular contractility
D)   increased venous return
E)   increased peripheral resistanceF) B) and E)
G) A) and E)

Question 9

Calculate the net filtration pressure given the following information: capillary blood pressure = 40 mm Hg; interstitial fluid hydrostatic pressure = 2 mm Hg; plasma osmotic pressure = 20 mm Hg; and interstitial fluid osmotic pressure = 5 mm Hg. Does filtration or absorption occur across this capillary wall?

Accepted Answer

A)   17 mm Hg; filtration
B)   27 mm Hg; absorption
C)   23 mm Hg; filtration
D)   67 mm Hg; absorption
E)   27 mm Hg; filtrationF) A) and B)
G) C) and D)

Question 10

An increase in the stretch of a baroreceptor will cause venomotor tone to________ while ventricular contractility will________ .

Accepted Answer

A)   remain constant : not change
B)   decrease : decrease
C)   increase : decrease
D)   increase : increase
E)   increase : not changeF) A) and C)
G) A) and D)

Question 11

An increase in blood flow to tissues in response to a previous reduction in blood flow is called

Accepted Answer

A)   reactive hyperemia.
B)   ischemia.
C)   active hyperemia.
D)   myogenic response.
E)   hypoxia.F) C) and E)
G) D) and E)

Question 12

Which of the following would NOT increase mean arterial pressure?

Accepted Answer

A)   decreased parasympathetic activity effects on the heart
B)   decreased parasympathetic activity effects on the arterioles
C)   increased sympathetic activity to the heart
D)   increased levels of epinephrine in the blood
E)   increased sympathetic activity to the veinsF) A) and D)
G) C) and D)

Question 13

The pressure gradient for blood flow through the systemic circuit is the mean arterial pressure.

Accepted Answer

A) True 
 B)False

Question 14

Any change in the relative distribution of cardiac output to an organ is typically due to changes in which of the following?

Accepted Answer

A)   central venous pressure
B)   mean arterial pressure
C)   resistance of that organ's vascular bed
D)   compliance of that organ's vascular bed
E)   viscosity of the blood moving through that organ's vascular bedF) C) and E)
G) A) and E)

Question 15

At rest, the greatest proportion of blood volume is present within the

Accepted Answer

A)   systemic capillaries.
B)   heart.
C)   systemic arteries.
D)   systemic veins.
E)   pulmonary veins.F) A) and B)
G) C) and D)

Question 16

Foreign materials are filtered out of the lymphatic fluid by what type of cell located within the lymph nodes?

Accepted Answer

A)   mast cells
B)   leukocytes
C)   macrophages
D)   erythrocytes
E)   plateletsF) B) and C)
G) A) and E)

Question 17

The more proteins in blood, the higher the blood viscosity.

Accepted Answer

A) True 
 B)False

Question 18

Which of the following accurately compares active hyperemia to reactive hyperemia?

Accepted Answer

A)   One is an intrinsic response, the other an extrinsic response.
B)   One involves vasodilation, the other vasoconstriction.
C)   One is caused by increased metabolic activity, the other in response to an increase in metabolites from an occlusion to blood flow.
D)   One is an increase in blood flow, the other is a decrease.
E)   One is caused by an increase in metabolites, the other to a decrease in perfusion pressure.F) A) and B)
G) B) and C)

Question 19

Which of the following would increase the rate of blood flow through a blood vessel?

Accepted Answer

A)   decreased radius of the vessel
B)   increased pressure of the blood entering the vessel
C)   constriction of the blood vessel
D)   increased viscosity of the blood
E)   increased length of the vesselF) D) and E)
G) B) and E)

Question 20

What is the driving force for blood flow through the systemic circuit?

Accepted Answer

A)   left ventricular pressure
B)   right atrial pressure
C)   mean arterial pressure
D)   capillary hydrostatic pressure
E)   central venous pressureF) A) and B)
G) A) and E)

Exam 14: The Cardiovascular System: Blood Vessels, Blood Flow, and Blood Pressure

An increase in the stretch of a baroreceptor will cause venomotor tone to while ventricular contractility will .

Correct Answer
verified

Correct Answer
verified

Which of the following would increase the rate of blood flow through a blood vessel?

Correct Answer
verified

Mean arterial pressure can be increased by all of the following EXCEPT

Correct Answer
verified

Which of the following does NOT occur in response to baroreceptors detecting an increase in mean arterial pressure?

Correct Answer
verified

The pressure gradient for blood flow through the systemic circuit is the mean arterial pressure.

Correct Answer
verified

Which of the following can cause vasoconstriction?

Correct Answer
verified

Veins functions as_ reservoirs due to their compliance.

Correct Answer
verified

Which of the following would NOT increase mean arterial pressure?

Correct Answer
verified

The more proteins in blood, the higher the blood viscosity.

Correct Answer
verified

An increase in blood flow to tissues in response to a previous reduction in blood flow is called

Correct Answer
verified

Which of the following accurately compares active hyperemia to reactive hyperemia?

Correct Answer
verified

Foreign materials are filtered out of the lymphatic fluid by what type of cell located within the lymph nodes?

Correct Answer
verified

What type of adrenergic receptor is found in the smooth muscle of most systemic arterioles?

Correct Answer
verified

The reduction in organ blood flow that results from a decrease in mean arterial pressure would be exacerbated by the_______ that occurs as a consequence of the baroreceptor reflex.

Correct Answer
verified

Flow autoregulation refers to an organ's ability to maintain perfusion pressure in the presence of a range of blood flows.

Correct Answer
verified

What is the purpose of extrinsic control of arteriolar smooth muscle contractile activity?

Correct Answer
verified

What is the driving force for blood flow through the systemic circuit?

Correct Answer
verified

Any change in the relative distribution of cardiac output to an organ is typically due to changes in which of the following?

Correct Answer
verified

At rest, the greatest proportion of blood volume is present within the

Correct Answer
verified

Exam 14: The Cardiovascular System: Blood Vessels, Blood Flow, and Blood Pressure

An increase in the stretch of a baroreceptor will cause venomotor tone to________ while ventricular contractility will________ .

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

Which of the following would increase the rate of blood flow through a blood vessel?

Correct AnswerverifiedShow Answer

Mean arterial pressure can be increased by all of the following EXCEPT

Correct AnswerverifiedShow Answer

Which of the following does NOT occur in response to baroreceptors detecting an increase in mean arterial pressure?

Correct AnswerverifiedShow Answer

The pressure gradient for blood flow through the systemic circuit is the mean arterial pressure.

Correct AnswerverifiedShow Answer

Which of the following can cause vasoconstriction?

Correct AnswerverifiedShow Answer

Veins functions as_________ reservoirs due to their ________compliance.

Correct AnswerverifiedShow Answer

Which of the following would NOT increase mean arterial pressure?

Correct AnswerverifiedShow Answer

The more proteins in blood, the higher the blood viscosity.

Correct AnswerverifiedShow Answer

An increase in blood flow to tissues in response to a previous reduction in blood flow is called

Correct AnswerverifiedShow Answer

Which of the following accurately compares active hyperemia to reactive hyperemia?

Correct AnswerverifiedShow Answer

Foreign materials are filtered out of the lymphatic fluid by what type of cell located within the lymph nodes?

Correct AnswerverifiedShow Answer

What type of adrenergic receptor is found in the smooth muscle of most systemic arterioles?

Correct AnswerverifiedShow Answer

The reduction in organ blood flow that results from a decrease in mean arterial pressure would be exacerbated by the_______ that occurs as a consequence of the baroreceptor reflex.

Correct AnswerverifiedShow Answer

Flow autoregulation refers to an organ's ability to maintain perfusion pressure in the presence of a range of blood flows.

Correct AnswerverifiedShow Answer

What is the purpose of extrinsic control of arteriolar smooth muscle contractile activity?

Correct AnswerverifiedShow Answer

What is the driving force for blood flow through the systemic circuit?

Correct AnswerverifiedShow Answer

Any change in the relative distribution of cardiac output to an organ is typically due to changes in which of the following?

Correct AnswerverifiedShow Answer

At rest, the greatest proportion of blood volume is present within the

Correct AnswerverifiedShow Answer

An increase in the stretch of a baroreceptor will cause venomotor tone to while ventricular contractility will .

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Veins functions as_ reservoirs due to their compliance.

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified