Question 1

Baroreceptors are found mainly in the carotid sinus and the ____________________.

Accepted Answer

The answer of Baroreceptors are found mainly in the carotid...

Question 2

Which of the following factors would produce the greatest increase in blood flow?

Accepted Answer

A) doubling the radius of the vessel 
B) doubling the difference in the pressure gradient within the vessel 
C)  doubling the viscosity of the blood 
D)  doubling the length of the vessel 
A) doubling the radius of the vessel 
B) doubling the difference in the pressure gradient within the vessel 
C)  doubling the viscosity of the blood 
D)  doubling the length of the vessel

Question 3

What is endothelium-derived relaxing factor (EDRF)?

Accepted Answer

A) a local chemical mediator released from the endothelial cells that induces contraction of arteriolar smooth muscle in the vicinity 
B) adenosine 
C)  nitric oxide 
D)  carbon dioxide released from the endothelial cells 
A) a local chemical mediator released from the endothelial cells that induces contraction of arteriolar smooth muscle in the vicinity 
B) adenosine 
C)  nitric oxide 
D)  carbon dioxide released from the endothelial cells

Question 4

What is the primary method by which materials such as O2, CO2, and nutrients are exchanged between blood and the surrounding tissues?

Accepted Answer

A) passive diffusion of substances across the capillary wall down their concentration gradients 
B) active transport of materials across the capillary wall 
C)  osmotic pressure drawing water and solutes out of the capillary, and bringing these dissolved nutrients into contact with the tissue cells 
D)  processes of ultrafiltration and reabsorption 
A) passive diffusion of substances across the capillary wall down their concentration gradients 
B) active transport of materials across the capillary wall 
C)  osmotic pressure drawing water and solutes out of the capillary, and bringing these dissolved nutrients into contact with the tissue cells 
D)  processes of ultrafiltration and reabsorption

Question 5

How is salt balance tied into blood pressure control?

Accepted Answer

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

Question 6

Increased sympathetic nerve activity _____ the stroke volume.

Accepted Answer

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

Question 7

If the diastolic pressure and systolic pressure were both increased by 18 mmHg, then the pulse pressure would be increased by 19 mmHg.

Accepted Answer

A) True 
 B)False

Question 8

The primary means by which individual substances are exchanged between the blood and the surrounding tissues is by bulk flow.

Accepted Answer

A) True 
 B)False

Question 9

How does the vasomotor centre respond to rising H+/CO2?

Accepted Answer

A) by vasodilating arteries 
B) by vasoconstricting arteries 
C)  by increasing respiratory rate 
D)  by inhibiting the cardioinhibitory centre 
A) by vasodilating arteries 
B) by vasoconstricting arteries 
C)  by increasing respiratory rate 
D)  by inhibiting the cardioinhibitory centre

Question 10

Match the types of vessel, labelled a. through e., with the function(s) they perform. (Options may be used more than once or not at all.)
a.arteries
b.arterioles
c.capillaries
d.veins
e.lymphatics
-changes in the radius of this vessel type regulate the distribution of the cardiac output to various areas of the body

Accepted Answer

The answer of Match the types of vessel, labelled a....

Question 11

Oedema refers to excess interstitial fluid.

Accepted Answer

A) True 
 B)False

Question 12

Increased arteriolar radius _____ the total peripheral resistance.

Accepted Answer

The answer of Increased arteriolar radius _____ the total peripheral...

Question 13

Under which of these conditions will reabsorption occur?

Accepted Answer

A) when inward-driving pressures exceed outward-driving pressures across the capillary wall 
B) when outward-driving pressures exceed inward-driving pressures across the capillary wall 
C)  when the osmolarity of plasma is decreased in the venule end of the capillary 
D)  when the outward-driving pressures and the inward-driving pressures across the capillary wall are equal 
A) when inward-driving pressures exceed outward-driving pressures across the capillary wall 
B) when outward-driving pressures exceed inward-driving pressures across the capillary wall 
C)  when the osmolarity of plasma is decreased in the venule end of the capillary 
D)  when the outward-driving pressures and the inward-driving pressures across the capillary wall are equal

Question 14

Increased parasympathetic nerve activity _____ the heart rate.

Accepted Answer

The answer of Increased parasympathetic nerve activity _____ the heart...

Question 15

The movements of fluid across the capillary wall depend on all of the following EXCEPT

Accepted Answer

A) capillary blood pressure. 
B) interstitial-fluid hydrostatic pressure. 
C)  plasma protein concentration. 
D)  concentration of glucose in the capillary. 
A) capillary blood pressure. 
B) interstitial-fluid hydrostatic pressure. 
C)  plasma protein concentration. 
D)  concentration of glucose in the capillary.

Question 16

Blood flow is driven by ____________________.

Accepted Answer

mean arter

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.)
a.would produce arteriolar vasoconstriction
b.would produce arteriolar vasodilation
c.would not cause any change in arteriolar calibre
-norepinephrine on cerebral arterioles

Accepted Answer

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

Question 18

Which of these factors would decrease total peripheral resistance?

Accepted Answer

A) adrenal medulla hormones 
B) angiotensin II 
C)  increased haematocrit 
D)  anaphylaxis 
A) adrenal medulla hormones 
B) angiotensin II 
C)  increased haematocrit 
D)  anaphylaxis

Question 19

During exercise, a larger percentage of the cardiac output travels to the skin and skeletal muscles.

Accepted Answer

A) True 
 B)False

Question 20

Decreased stroke volume _____ cardiac output.

Accepted Answer

The answer of Decreased stroke volume _____ cardiac output....

Baroreceptors are found mainly in the carotid sinus and the ____________________.

Which of the following factors would produce the greatest increase in blood flow?

What is endothelium-derived relaxing factor (EDRF)?

What is the primary method by which materials such as O₂, CO₂, and nutrients are exchanged between blood and the surrounding tissues?

How is salt balance tied into blood pressure control?

Increased sympathetic nerve activity _____ the stroke volume.

If the diastolic pressure and systolic pressure were both increased by 18 mmHg, then the pulse pressure would be increased by 19 mmHg.

The primary means by which individual substances are exchanged between the blood and the surrounding tissues is by bulk flow.

How does the vasomotor centre respond to rising H⁺/CO₂?

Oedema refers to excess interstitial fluid.

Increased arteriolar radius _____ the total peripheral resistance.

Under which of these conditions will reabsorption occur?

Increased parasympathetic nerve activity _____ the heart rate.

The movements of fluid across the capillary wall depend on all of the following EXCEPT

Blood flow is driven by ____________________.

Which of these factors would decrease total peripheral resistance?

During exercise, a larger percentage of the cardiac output travels to the skin and skeletal muscles.

Decreased stroke volume _____ cardiac output.

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

Baroreceptors are found mainly in the carotid sinus and the ____________________.

Which of the following factors would produce the greatest increase in blood flow?

What is endothelium-derived relaxing factor (EDRF)?

What is the primary method by which materials such as O2, CO2, and nutrients are exchanged between blood and the surrounding tissues?

How is salt balance tied into blood pressure control?

Increased sympathetic nerve activity _____ the stroke volume.

If the diastolic pressure and systolic pressure were both increased by 18 mmHg, then the pulse pressure would be increased by 19 mmHg.

The primary means by which individual substances are exchanged between the blood and the surrounding tissues is by bulk flow.

How does the vasomotor centre respond to rising H+/CO2?

Oedema refers to excess interstitial fluid.

Increased arteriolar radius _____ the total peripheral resistance.

Under which of these conditions will reabsorption occur?

Increased parasympathetic nerve activity _____ the heart rate.

The movements of fluid across the capillary wall depend on all of the following EXCEPT

Blood flow is driven by ____________________.

Which of these factors would decrease total peripheral resistance?

During exercise, a larger percentage of the cardiac output travels to the skin and skeletal muscles.

Decreased stroke volume _____ cardiac output.

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

What is the primary method by which materials such as O₂, CO₂, and nutrients are exchanged between blood and the surrounding tissues?

How does the vasomotor centre respond to rising H⁺/CO₂?