Question 1

A metarteriole is located between an arteriole and venule.

Accepted Answer

A) True 
 B)False  True

Question 2

Given the following parameters: blood capillary pressure at arteriolar end of tissue capillaries: 35 mm Hg; blood capillary pressure at venule end of tissue capillaries: 15 mm Hg blood-colloid osmotic pressure: 22 mm Hg
Interstitial-fluid hydrostatic pressure: 1 mm Hg
Interstitial-fluid-colloid osmotic pressure:
0 mm Hg; what would the reabsorption pressure be?

Accepted Answer

A)  6 mm Hg 
B)  7 mm Hg 
C)  8 mm Hg 
D)  10 mm Hg 
E)  22 mm Hg 
A)  6 mm Hg 
B)  7 mm Hg 
C)  8 mm Hg 
D)  10 mm Hg 
E)  22 mm Hg C

Question 3

Vasoconstriction

Accepted Answer

A)  refers to a decrease in the radius of a vessel. 
B)  of an arteriole decreases blood flow through that vessel. 
C)  of an arteriole is controlled by the parasympathetic system 
D)  both (a) and (b) above. 
E)  all of these answers. 
A)  refers to a decrease in the radius of a vessel. 
B)  of an arteriole decreases blood flow through that vessel. 
C)  of an arteriole is controlled by the parasympathetic system 
D)  both (a) and (b) above. 
E)  all of these answers. D

Question 4

During exercise, there is not an increased blood flow to which of the following tissues?

Accepted Answer

A)  skeletal muscles. 
B)  heart. 
C)  skin. 
D)  brain. 
E)  blood flow is increased to all of these tissues during exercise. 
A)  skeletal muscles. 
B)  heart. 
C)  skin. 
D)  brain. 
E)  blood flow is increased to all of these tissues during exercise.

Question 5

Resistance increases when

Accepted Answer

A)  radius decreases. 
B)  length decreases. 
C)  viscosity decreases. 
D)  hematocrit decreases. 
E)  none of these answers. 
A)  radius decreases. 
B)  length decreases. 
C)  viscosity decreases. 
D)  hematocrit decreases. 
E)  none of these answers.

Question 6

Resistance

Accepted Answer

A)  is a measure of the hindrance to blood flow through a vessel caused by friction between the moving fluid and stationary vascular walls. 
B)  is doubled when the radius of the vessel is reduced by one-half. 
C)  increases sixteen-fold when the radius of the vessel is reduced by one-half. 
D)  both (a) and (b) above. 
E)  both (a) and (c) above. 
A)  is a measure of the hindrance to blood flow through a vessel caused by friction between the moving fluid and stationary vascular walls. 
B)  is doubled when the radius of the vessel is reduced by one-half. 
C)  increases sixteen-fold when the radius of the vessel is reduced by one-half. 
D)  both (a) and (b) above. 
E)  both (a) and (c) above.

Question 7

Hypertension may be caused by all of these except

Accepted Answer

A)  renal disease. 
B)  hardening of the arteries. 
C)  suppression of baroreceptors. 
D)  salt imbalances. 
E)  adrenal medullary tumors. 
A)  renal disease. 
B)  hardening of the arteries. 
C)  suppression of baroreceptors. 
D)  salt imbalances. 
E)  adrenal medullary tumors.

Question 8

Which of the following factors is most important in matching the blood flow through a specific tissue with the metabolic needs of that tissue?

Accepted Answer

A)  sympathetically induced vasoconstriction of the arteries supplying a tissue forces more blood to flow into the tissue. 
B)  parasympathetically induced vasodilation of the capillaries within a tissue allows more blood to flow into the tissue. 
C)  local changes within a tissue resulting from increased metabolic activity can produce local arteriolar vasodilation to allow more blood to flow into the tissue. 
D)  widespread venous vasoconstriction allows blood to dam up at the tissue level. 
E)  the amount of blood flowing through each tissue remains constant through reflex controls to ensure that metabolic needs are continuously met. 
A)  sympathetically induced vasoconstriction of the arteries supplying a tissue forces more blood to flow into the tissue. 
B)  parasympathetically induced vasodilation of the capillaries within a tissue allows more blood to flow into the tissue. 
C)  local changes within a tissue resulting from increased metabolic activity can produce local arteriolar vasodilation to allow more blood to flow into the tissue. 
D)  widespread venous vasoconstriction allows blood to dam up at the tissue level. 
E)  the amount of blood flowing through each tissue remains constant through reflex controls to ensure that metabolic needs are continuously met.

Question 9

Normally most of the blood at any one time is in the capillary beds, because this is where material exchange is taking place.

Accepted Answer

A) True 
 B)False

Question 10

Indicate whether arteriolar vasoconstriction or vasodilation would occur in the tissue in question by using the following answer code:
-sympathetic activity directed at cerebral arterioles

Accepted Answer

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

Question 11

Relate changes in bulk flow forces to edema.

Accepted Answer

Edema is the accumulation of excess inte

Question 12

More blood is delivered to the tissues during ventricular systole than during ventricular diastole.

Accepted Answer

A) True 
 B)False

Question 13

There is a constant flow of blood through the capillaries even though the heart is forcing blood out into the arterial system only part of the time.

Accepted Answer

A) True 
 B)False

Question 14

Endothelial cells release paracrines which act as local chemical messengers to influence vessel diameter.

Accepted Answer

A) True 
 B)False

Question 15

The following questions refer to the accompanying diagram of arteriole vasoconstriction and vasodilation. The diagram shows three state of arteriole tone. The top image labeled "A," shows normal tone. The other two panels labeled "B" and "C" show different state of arteriole tone. Match the statements below with the correct arteriole using A, B, and C.
-Caused by NE

Accepted Answer

The answer of   
The following questions refer to...

Question 16

The mean arterial pressure is more dependent upon diastolic pressures than systolic pressure.

Accepted Answer

A) True 
 B)False

Question 17

What is the primary method by which materials such as O2, CO2 and nutrients are exchanged between the blood and 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, bringing these dissolved nutrients into contact with the tissue cells. 
D)  processes of ultrafiltration and reabsorption. 
E)  bulk flow. 
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, bringing these dissolved nutrients into contact with the tissue cells. 
D)  processes of ultrafiltration and reabsorption. 
E)  bulk flow.

Question 18

The brain receives the largest percentage of cardiac output at a constant flow.

Accepted Answer

A) True 
 B)False

Question 19

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

Accepted Answer

A) True 
 B)False

Question 20

Resistance to blood flow is _____ proportional to viscosity, _____ proportional to vessel length and _______ proportional to vessel radius.

Accepted Answer

directly,

A metarteriole is located between an arteriole and venule.

Vasoconstriction

During exercise, there is not an increased blood flow to which of the following tissues?

Resistance increases when

Resistance

Hypertension may be caused by all of these except

Which of the following factors is most important in matching the blood flow through a specific tissue with the metabolic needs of that tissue?

Normally most of the blood at any one time is in the capillary beds, because this is where material exchange is taking place.

Indicate whether arteriolar vasoconstriction or vasodilation would occur in the tissue in question by using the following answer code: -sympathetic activity directed at cerebral arterioles

Relate changes in bulk flow forces to edema.

More blood is delivered to the tissues during ventricular systole than during ventricular diastole.

There is a constant flow of blood through the capillaries even though the heart is forcing blood out into the arterial system only part of the time.

Endothelial cells release paracrines which act as local chemical messengers to influence vessel diameter.

The mean arterial pressure is more dependent upon diastolic pressures than systolic pressure.

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

The brain receives the largest percentage of cardiac output at a constant flow.

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

Resistance to blood flow is ___ proportional to viscosity, _ proportional to vessel length and _____ proportional to vessel radius.

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 and Special Senses

The Peripheral Nervous System: Efferent Division

Muscle Physiology

Cardiac Physiology

The Blood and Body Defenses

The Respiratory System

The Urinary System

Fluid and Acid-Base Balance

The Digestive System

Energy Balance and Temperature Regulation

The Endocrine System

The Reproductive System

Filters

Exam 10: The Blood Vessels and Blood Pressure

A metarteriole is located between an arteriole and venule.

Vasoconstriction

During exercise, there is not an increased blood flow to which of the following tissues?

Resistance increases when

Resistance

Hypertension may be caused by all of these except

Which of the following factors is most important in matching the blood flow through a specific tissue with the metabolic needs of that tissue?

Normally most of the blood at any one time is in the capillary beds, because this is where material exchange is taking place.

Indicate whether arteriolar vasoconstriction or vasodilation would occur in the tissue in question by using the following answer code: -sympathetic activity directed at cerebral arterioles

Relate changes in bulk flow forces to edema.

More blood is delivered to the tissues during ventricular systole than during ventricular diastole.

There is a constant flow of blood through the capillaries even though the heart is forcing blood out into the arterial system only part of the time.

Endothelial cells release paracrines which act as local chemical messengers to influence vessel diameter.

The mean arterial pressure is more dependent upon diastolic pressures than systolic pressure.

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

The brain receives the largest percentage of cardiac output at a constant flow.

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

Resistance to blood flow is _____ proportional to viscosity, _____ proportional to vessel length and _______ proportional to vessel radius.

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 and Special Senses

The Peripheral Nervous System: Efferent Division

Muscle Physiology

Cardiac Physiology

The Blood and Body Defenses

The Respiratory System

The Urinary System

Fluid and Acid-Base Balance

The Digestive System

Energy Balance and Temperature Regulation

The Endocrine System

The Reproductive System

Filters

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

Resistance to blood flow is ___ proportional to viscosity, _ proportional to vessel length and _____ proportional to vessel radius.