Question 1

During exercise, blood flow to the digestive tract is increased by dilation of the arterioles of the digestive tract.

Accepted Answer

A) True 
 B)False

Question 2

Because the arteries have large radii, they serve as excellent rapid-transit passageways for blood.What is their second function-which is related to their elasticity-in maintaining blood flow during diastole

Accepted Answer

A) cardiac reserve 
B) venous reserve 
C) arterial capacitance 
D) pressure reservoir 
A) cardiac reserve 
B) venous reserve 
C) arterial capacitance 
D) pressure reservoir

Question 3

Relaxation of arteriolar smooth muscle causes the radius of the vessel to ____________________, a process known as ____________________, whereas contraction of arteriolar smooth muscle causes the radius of the vessel to ____________________, a process known as ____________________.

Accepted Answer

increase; vasodilati

Question 4

When blood pressure falls below normal, the body tries to restore the blood pressure toward normal.The rate of firing in the afferent nerves originating from the carotid sinus and aortic arch baroreceptors ______.

Accepted Answer

A) increases 
B) decreases 
C) does not change 
A) increases 
B) decreases 
C) does not change

Question 5

Vasoconstriction refers to a decrease in the radius of a vessel.

Accepted Answer

A) True 
 B)False

Question 6

Match the effects, labelled a. through d., with the events in question. (Options may be used more than once or not at all.)
-baroreceptors inhibited

Accepted Answer

A) increase BP 
B) decrease BP 
C) increase heart rate only 
D) have no effect on BP or heart rate 
A) increase BP 
B) decrease BP 
C) increase heart rate only 
D) have no effect on BP or heart rate

Question 7

Which of the following is NOT a compensation mechanism for blood loss

Accepted Answer

A) fluid shift from ICF to plasma 
B) venous vasoconstriction 
C) lowered angiotensin II production 
D) thirst 
A) fluid shift from ICF to plasma 
B) venous vasoconstriction 
C) lowered angiotensin II production 
D) thirst

Question 8

How is salt balance tied into blood pressure control

Accepted Answer

The answer of How is salt balance tied into blood...

Question 9

What are the major resistance vessels of the body

Accepted Answer

A) arteries 
B) arterioles 
C) capillaries 
D) veins 
A) arteries 
B) arterioles 
C) capillaries 
D) veins

Question 10

____________________ syndrome occurs with the increased production of the hormone ____________________.

Accepted Answer

The answer of ____________________ syndrome occurs with the increased production...

Question 11

Decreased parasympathetic nerve activity _____ total peripheral resistance.

Accepted Answer

The answer of Decreased parasympathetic nerve activity _____ total peripheral...

Question 12

Which of these pairs contains the two determinants of mean arterial pressure

Accepted Answer

A) stroke volume and compliance of vessel walls 
B) heart rate and stroke volume 
C) heart rate and end-diastolic volume 
D) cardiac output and total peripheral resistance 
A) stroke volume and compliance of vessel walls 
B) heart rate and stroke volume 
C) heart rate and end-diastolic volume 
D) cardiac output and total peripheral resistance

Question 13

Decreased stroke volume _____ cardiac output.

Accepted Answer

Decreased stroke volume leads to a reduc

Question 14

The category of controls known as ____________________ (local or extrinsic) is responsible primarily for matching tissue blood flow with the metabolic needs of the specific tissue involved.

Accepted Answer

The answer of The category of controls known as ____________________...

Question 15

Under which of these circumstances does vascular resistance increase

Accepted Answer

A) when radius decreases 
B) when length decreases 
C) when viscosity decreases 
D) when haematocrit decreases 
A) when radius decreases 
B) when length decreases 
C) when viscosity decreases 
D) when haematocrit decreases

Question 16

The regulation of blood flow in the arterioles of the brain is under the control of mainly the sympathetic nervous system.

Accepted Answer

A) True 
 B)False

Question 17

Match the arteriolar effects, labelled a. through c., with the tissues in question. (Options may be used more than once or not at all.)
-histamine release in an injured tissue

Accepted Answer

A) would produce arteriolar vasoconstriction 
B) would produce arteriolar vasodilation 
C) would not cause any change in arteriolar calibre 
A) would produce arteriolar vasoconstriction 
B) would produce arteriolar vasodilation 
C) would not cause any change in arteriolar calibre

Question 18

What is the major function of the arterioles

Accepted Answer

A) to regulate flow of blood through capillary beds 
B) to distribute cardiac output to large blood vessels 
C) to serve as a pressure reservoir 
D) to regulate heart rate 
A) to regulate flow of blood through capillary beds 
B) to distribute cardiac output to large blood vessels 
C) to serve as a pressure reservoir 
D) to regulate heart rate

Question 19

The ultimate function of the circulatory system is accomplished by the heart.

Accepted Answer

A) True 
 B)False

Question 20

Which statement applies to vascular resistance

Accepted Answer

A) It is a measure of the hindrance to blood flow through a vessel caused by friction between the moving fluid and stationary vascular walls. 
B) It is doubled when the radius of the vessel is wider than normal. 
C) It is inversely proportional to blood viscosity. 
D) It is increased when blood vessel length is shorter. 
A) It is a measure of the hindrance to blood flow through a vessel caused by friction between the moving fluid and stationary vascular walls. 
B) It is doubled when the radius of the vessel is wider than normal. 
C) It is inversely proportional to blood viscosity. 
D) It is increased when blood vessel length is shorter.

During exercise, blood flow to the digestive tract is increased by dilation of the arterioles of the digestive tract.

Because the arteries have large radii, they serve as excellent rapid-transit passageways for blood.What is their second function-which is related to their elasticity-in maintaining blood flow during diastole

Relaxation of arteriolar smooth muscle causes the radius of the vessel to , a process known as , whereas contraction of arteriolar smooth muscle causes the radius of the vessel to , a process known as .

When blood pressure falls below normal, the body tries to restore the blood pressure toward normal.The rate of firing in the afferent nerves originating from the carotid sinus and aortic arch baroreceptors ______.

Vasoconstriction refers to a decrease in the radius of a vessel.

Match the effects, labelled a. through d., with the events in question. (Options may be used more than once or not at all.) -baroreceptors inhibited

Which of the following is NOT a compensation mechanism for blood loss

How is salt balance tied into blood pressure control

What are the major resistance vessels of the body

syndrome occurs with the increased production of the hormone .

Decreased parasympathetic nerve activity _____ total peripheral resistance.

Which of these pairs contains the two determinants of mean arterial pressure

Decreased stroke volume _____ cardiac output.

The category of controls known as ____________________ (local or extrinsic) is responsible primarily for matching tissue blood flow with the metabolic needs of the specific tissue involved.

Under which of these circumstances does vascular resistance increase

The regulation of blood flow in the arterioles of the brain is under the control of mainly the sympathetic nervous system.

Match the arteriolar effects, labelled a. through c., with the tissues in question. (Options may be used more than once or not at all.) -histamine release in an injured tissue

What is the major function of the arterioles

The ultimate function of the circulatory system is accomplished by the heart.

Which statement applies to vascular resistance

The Foundation of Physiology

Cell Physiology

The Central Nervous System

The Peripheral Nervous System: Sensory, Autonomic, Somatic

Principles of Endocrinology: The Central Endocrine Glands

The Endocrine Glands

Muscle Physiology

Cardiac Physiology

The Blood

Body Defences

The Respiratory System

The Urinary System

Fluid and Acidbase Balance

The Digestive System

Energy Balance and Temperature Regulation

The Reproductive System

Filters

Exam 9: Vascular Physiology

During exercise, blood flow to the digestive tract is increased by dilation of the arterioles of the digestive tract.

Because the arteries have large radii, they serve as excellent rapid-transit passageways for blood.What is their second function-which is related to their elasticity-in maintaining blood flow during diastole

Relaxation of arteriolar smooth muscle causes the radius of the vessel to ____________________, a process known as ____________________, whereas contraction of arteriolar smooth muscle causes the radius of the vessel to ____________________, a process known as ____________________.

When blood pressure falls below normal, the body tries to restore the blood pressure toward normal.The rate of firing in the afferent nerves originating from the carotid sinus and aortic arch baroreceptors ______.

Vasoconstriction refers to a decrease in the radius of a vessel.

Match the effects, labelled a. through d., with the events in question. (Options may be used more than once or not at all.) -baroreceptors inhibited

Which of the following is NOT a compensation mechanism for blood loss

How is salt balance tied into blood pressure control

What are the major resistance vessels of the body

____________________ syndrome occurs with the increased production of the hormone ____________________.

Decreased parasympathetic nerve activity _____ total peripheral resistance.

Which of these pairs contains the two determinants of mean arterial pressure

Decreased stroke volume _____ cardiac output.

The category of controls known as ____________________ (local or extrinsic) is responsible primarily for matching tissue blood flow with the metabolic needs of the specific tissue involved.

Under which of these circumstances does vascular resistance increase

The regulation of blood flow in the arterioles of the brain is under the control of mainly the sympathetic nervous system.

Match the arteriolar effects, labelled a. through c., with the tissues in question. (Options may be used more than once or not at all.) -histamine release in an injured tissue

What is the major function of the arterioles

The ultimate function of the circulatory system is accomplished by the heart.

Which statement applies to vascular resistance

The Foundation of Physiology

Cell Physiology

The Central Nervous System

The Peripheral Nervous System: Sensory, Autonomic, Somatic

Principles of Endocrinology: The Central Endocrine Glands

The Endocrine Glands

Muscle Physiology

Cardiac Physiology

The Blood

Body Defences

The Respiratory System

The Urinary System

Fluid and Acidbase Balance

The Digestive System

Energy Balance and Temperature Regulation

The Reproductive System

Filters

Relaxation of arteriolar smooth muscle causes the radius of the vessel to , a process known as , whereas contraction of arteriolar smooth muscle causes the radius of the vessel to , a process known as .

syndrome occurs with the increased production of the hormone .