Question 1

Which of these factors is the major determinant influencing resistance to blood flow?

Accepted Answer

A) viscosity of the blood 
B) radius of the vessel through which the blood is flowing 
C)  pressure gradient in the vessel 
D)  haematocrit of the blood 
A) viscosity of the blood 
B) radius of the vessel through which the blood is flowing 
C)  pressure gradient in the vessel 
D)  haematocrit of the blood

Question 2

Which of the following local chemical changes does NOT occur during a period of increased cell activity?

Accepted Answer

A) increased CO2 
B) increased acid 
C)  increased O2 
D)  increased K+ 
A) increased CO2 
B) increased acid 
C)  increased O2 
D)  increased K+

Question 3

A local increase in potassium increases the vasodilation of arterioles.

Accepted Answer

A) True 
 B)False

Question 4

There is normally a net gain of fluid in the capillary at the venular end.

Accepted Answer

A) True 
 B)False

Question 5

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

Accepted Answer

A) True 
 B)False

Question 6

The wall of an artery contains ____________________ and ____________________ connective tissue fibres.

Accepted Answer

-collagen;

Question 7

Which of the following factors is NOT associated with primary hypertension?

Accepted Answer

A) high dietary salt intake 
B) family history of hypertension 
C)  obesity and stress, with excessive sympathetic nervous system activity 
D)  pheochromocytoma 
A) high dietary salt intake 
B) family history of hypertension 
C)  obesity and stress, with excessive sympathetic nervous system activity 
D)  pheochromocytoma

Question 8

Match the effects, labelled a. through d., with the events in question. (Options may be used more than once or not at all.)
a.increase BP
b.decrease BP
c.increase heart rate only
d.have no effect on BP or heart rate
-increased vasomotor centre activity

Accepted Answer

The answer of Match the effects, labelled a. through d.,...

Question 9

The primary mechanism for exchange of individual solutes across the capillary wall is ____________________.

Accepted Answer

diffusion

Question 10

Differences in blood flow to an organ are related to the resistance to flow offered by the arterioles that supply that organ.

Accepted Answer

A) True 
 B)False

Question 11

Increased heart rate _____ cardiac output.

Accepted Answer

The answer of Increased heart rate _____ cardiac output....

Question 12

Which of the following local chemical factors will NOT cause vasodilation of arterioles?

Accepted Answer

A) decreased K+ 
B) increased CO2 
C)  increased acid 
D)  decreased O2 
A) decreased K+ 
B) increased CO2 
C)  increased acid 
D)  decreased O2

Question 13

The process of ____________________ is responsible for determining the distribution of the extracellular fluid volume between the plasma and interstitial fluid.

Accepted Answer

The answer of The process of ____________________ is responsible for...

Question 14

Increased sympathetic nerve activity _____ the rate of depolarization of the SA node.

Accepted Answer

The answer of Increased sympathetic nerve activity _____ the rate...

Question 15

Which of these statements correctly describes extrinsic control of arteriolar radius?

Accepted Answer

A) It is accomplished primarily by the parasympathetic nervous system. 
B) It is important in the regulation of arterial blood pressure. 
C)  It can never be overridden by local adjustments. 
D)  It is important for oxygen delivery to tissues. 
A) It is accomplished primarily by the parasympathetic nervous system. 
B) It is important in the regulation of arterial blood pressure. 
C)  It can never be overridden by local adjustments. 
D)  It is important for oxygen delivery to tissues.

Question 16

Movement of fluid out of the capillaries into the interstitial fluid is known as ____________________.

Accepted Answer

The answer of Movement of fluid out of the capillaries...

Question 17

Match the effects, labelled a. through d., with the events in question. (Options may be used more than once or not at all.)
a.increase BP
b.decrease BP
c.increase heart rate only
d.have no effect on BP or heart rate
-facultative Na+ reabsorption

Accepted Answer

Question 18

Which of these statements correctly describes active hyperaemia?

Accepted Answer

A) It refers to the arteriolar dilation that occurs within a tissue in response to local chemical changes that accompany increased metabolic activity of that tissue. 
B) It refers to local arteriolar mechanisms that are aimed at keeping tissue blood flow constant in spite of wide deviations in mean arterial driving pressure. 
C)  It refers to the increase in blood flow to a tissue that occurs after removal of an occlusion of its blood supply. 
D)  It is important in maintaining an adequate pressure head to drive blood forward into a tissue. 
A) It refers to the arteriolar dilation that occurs within a tissue in response to local chemical changes that accompany increased metabolic activity of that tissue. 
B) It refers to local arteriolar mechanisms that are aimed at keeping tissue blood flow constant in spite of wide deviations in mean arterial driving pressure. 
C)  It refers to the increase in blood flow to a tissue that occurs after removal of an occlusion of its blood supply. 
D)  It is important in maintaining an adequate pressure head to drive blood forward into a tissue.

Question 19

Which of the following conditions might be NOT associated with oedema?

Accepted Answer

A) extensive burns 
B) congestive heart failure 
C)  decreased venous pressure 
D)  lymphatic obstruction 
A) extensive burns 
B) congestive heart failure 
C)  decreased venous pressure 
D)  lymphatic obstruction

Question 20

The extra fluid filtered but not reabsorbed at the capillary level is picked up by the lymphatics.

Accepted Answer

A) True 
 B)False

Which of these factors is the major determinant influencing resistance to blood flow?

Which of the following local chemical changes does NOT occur during a period of increased cell activity?

A local increase in potassium increases the vasodilation of arterioles.

There is normally a net gain of fluid in the capillary at the venular end.

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

The wall of an artery contains and connective tissue fibres.

Which of the following factors is NOT associated with primary hypertension?

Match the effects, labelled a. through d., with the events in question. (Options may be used more than once or not at all.) a.increase BP b.decrease BP c.increase heart rate only d.have no effect on BP or heart rate -increased vasomotor centre activity

The primary mechanism for exchange of individual solutes across the capillary wall is ____________________.

Differences in blood flow to an organ are related to the resistance to flow offered by the arterioles that supply that organ.

Increased heart rate _____ cardiac output.

Which of the following local chemical factors will NOT cause vasodilation of arterioles?

The process of ____________________ is responsible for determining the distribution of the extracellular fluid volume between the plasma and interstitial fluid.

Increased sympathetic nerve activity _____ the rate of depolarization of the SA node.

Which of these statements correctly describes extrinsic control of arteriolar radius?

Movement of fluid out of the capillaries into the interstitial fluid is known as ____________________.

Match the effects, labelled a. through d., with the events in question. (Options may be used more than once or not at all.) a.increase BP b.decrease BP c.increase heart rate only d.have no effect on BP or heart rate -facultative Na⁺ reabsorption

Which of these statements correctly describes active hyperaemia?

Which of the following conditions might be NOT associated with oedema?

The extra fluid filtered but not reabsorbed at the capillary level is picked up by the lymphatics.

Introduction to Physiology and Homeostasis

Cell Physiology

The Plasma Membrane and Membrane Potential

Principles of Neural and Hormonal Communication

The Central Nervous System

The Peripheral Nervous System: Afferent Division; Special Senses

The Peripheral Nervous System: Efferent Division

Cardiac Physiology

The Blood Vessels and Blood Pressure

The Blood

Body Defenses

The Respiratory System

The Urinary System

Fluid and Acidbase Balance

The Digestive System

Energy Balance and Temperature Regulation

Filters

Exam 8: Muscle Physiology

Which of these factors is the major determinant influencing resistance to blood flow?

Which of the following local chemical changes does NOT occur during a period of increased cell activity?

A local increase in potassium increases the vasodilation of arterioles.

There is normally a net gain of fluid in the capillary at the venular end.

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

The wall of an artery contains ____________________ and ____________________ connective tissue fibres.

Which of the following factors is NOT associated with primary hypertension?

Match the effects, labelled a. through d., with the events in question. (Options may be used more than once or not at all.) a.increase BP b.decrease BP c.increase heart rate only d.have no effect on BP or heart rate -increased vasomotor centre activity

The primary mechanism for exchange of individual solutes across the capillary wall is ____________________.

Differences in blood flow to an organ are related to the resistance to flow offered by the arterioles that supply that organ.

Increased heart rate _____ cardiac output.

Which of the following local chemical factors will NOT cause vasodilation of arterioles?

The process of ____________________ is responsible for determining the distribution of the extracellular fluid volume between the plasma and interstitial fluid.

Increased sympathetic nerve activity _____ the rate of depolarization of the SA node.

Which of these statements correctly describes extrinsic control of arteriolar radius?

Movement of fluid out of the capillaries into the interstitial fluid is known as ____________________.

Match the effects, labelled a. through d., with the events in question. (Options may be used more than once or not at all.) a.increase BP b.decrease BP c.increase heart rate only d.have no effect on BP or heart rate -facultative Na+ reabsorption

Which of these statements correctly describes active hyperaemia?

Which of the following conditions might be NOT associated with oedema?

The extra fluid filtered but not reabsorbed at the capillary level is picked up by the lymphatics.

Introduction to Physiology and Homeostasis

Cell Physiology

The Plasma Membrane and Membrane Potential

Principles of Neural and Hormonal Communication

The Central Nervous System

The Peripheral Nervous System: Afferent Division; Special Senses

The Peripheral Nervous System: Efferent Division

Cardiac Physiology

The Blood Vessels and Blood Pressure

The Blood

Body Defenses

The Respiratory System

The Urinary System

Fluid and Acidbase Balance

The Digestive System

Energy Balance and Temperature Regulation

Filters

The wall of an artery contains and connective tissue fibres.

Match the effects, labelled a. through d., with the events in question. (Options may be used more than once or not at all.) a.increase BP b.decrease BP c.increase heart rate only d.have no effect on BP or heart rate -facultative Na⁺ reabsorption