Question 1

Which of the following is not a characteristic of capillaries?

Accepted Answer

A)  thin walls. 
B)  short distance between adjacent vessels. 
C)  distensible walls. 
D)  slow blood velocity. 
E)  large total surface area. 
A)  thin walls. 
B)  short distance between adjacent vessels. 
C)  distensible walls. 
D)  slow blood velocity. 
E)  large total surface area.

Question 2

Indicate whether arteriolar vasoconstriction or vasodilation would occur in the tissue in question by using the following answer code:
-decreased O2 in skeletal muscle

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 3

Describe how local chemical cues can control blood flow through an organ.

Accepted Answer

Local controls are changes within an org

Question 4

Indicate what effect the changes in question would have on blood flow, using the following answer code:
-Increasing the length of a vessel.

Accepted Answer

A) This change would increase blood flow. 
B) This change would decrease blood flow. 
C) This change would have no effect on blood flow. 
A) This change would increase blood flow. 
B) This change would decrease blood flow. 
C) This change would have no effect on blood flow.

Question 5

Shock may develop

Accepted Answer

A)  from loss of blood. 
B)  from low cardiac output. 
C)  from anaphylaxis. 
D)  excess vasodilation. 
E)  all of these answers. 
A)  from loss of blood. 
B)  from low cardiac output. 
C)  from anaphylaxis. 
D)  excess vasodilation. 
E)  all of these answers.

Question 6

Which of the following changes could lead to edema?

Accepted Answer

A)  decreasing capillary blood pressure. 
B)  decreasing interstitial-fluid hydrostatic pressure. 
C)  increasing plasma protein concentration. 
D)  increasing interstitial-fluid protein concentration. 
E)  none of the above 
A)  decreasing capillary blood pressure. 
B)  decreasing interstitial-fluid hydrostatic pressure. 
C)  increasing plasma protein concentration. 
D)  increasing interstitial-fluid protein concentration. 
E)  none of the above

Question 7

Which of the following does not occur as a compensation for hemorrhage?

Accepted Answer

A)  shift of fluid from the interstitial fluid into the plasma. 
B)  reduced urinary output. 
C)  increased capillary permeability. 
D)  increased cardiac output. 
E)  increased synthesis of plasma proteins. 
A)  shift of fluid from the interstitial fluid into the plasma. 
B)  reduced urinary output. 
C)  increased capillary permeability. 
D)  increased cardiac output. 
E)  increased synthesis of plasma proteins.

Question 8

Indicate whether arteriolar vasoconstriction or vasodilation would occur in the tissue in question by using the following answer code:
-increased stretch of arterioles supplying a particular tissue

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 9

Arterial walls contain a thick layer of smooth muscle and an abundance of collagen and elastin fibers.

Accepted Answer

A) True 
 B)False

Question 10

A decrease in blood-colloid osmotic pressure will decrease ultrafiltration and increase reabsorption at the capillary level.

Accepted Answer

A) True 
 B)False

Question 11

Each of the following local factors produces the relaxation of arteriolar smooth muscle except increased

Accepted Answer

A)  acid. 
B)  carbon dioxide. 
C)  osmolarity. 
D)  oxygen. 
E)  potassium. 
A)  acid. 
B)  carbon dioxide. 
C)  osmolarity. 
D)  oxygen. 
E)  potassium.

Question 12

Local chemical/metabolic influences on arteriolar radius include all of the following except:

Accepted Answer

A)  local metabolic chemicals 
B)  histamine 
C)  myogenic stretch 
D)  application of cold or heat 
E)  NE 
A)  local metabolic chemicals 
B)  histamine 
C)  myogenic stretch 
D)  application of cold or heat 
E)  NE

Question 13

Local control mechanisms can override sympathetic control of changes in the size of arterioles.

Accepted Answer

A) True 
 B)False

Question 14

Skeletal muscle contractions working in conjunction with vein valves help move blood against gravity.

Accepted Answer

A) True 
 B)False

Question 15

Indicate whether arteriolar vasoconstriction or vasodilation would occur in the tissue in question by using the following answer code:
-parasympathetic discharge on skeletal muscle 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 16

Arteriolar resistance is regulated by both local controls and extrinsic controls.

Accepted Answer

A) True 
 B)False

Question 17

Select the correct statement about veins.

Accepted Answer

A)  their walls are highly muscular. 
B)  their walls consist of one layer of cells. 
C)  there are only about forty large ones in the body. 
D)  those that work against gravity have valves to help promote blood flow 
E)  they transport blood away from the heart. 
A)  their walls are highly muscular. 
B)  their walls consist of one layer of cells. 
C)  there are only about forty large ones in the body. 
D)  those that work against gravity have valves to help promote blood flow 
E)  they transport blood away from the heart.

Question 18

Which does not cause arteriolar vasodilation?

Accepted Answer

A)  decreased sympathetic stimulation. 
B)  local decrease in O2. 
C)  histamine release. 
D)  application of heat. 
E)  myogenic response to passive stretch of the vessel 
A)  decreased sympathetic stimulation. 
B)  local decrease in O2. 
C)  histamine release. 
D)  application of heat. 
E)  myogenic response to passive stretch of the vessel

Question 19

Which of the following provides vascular tone?

Accepted Answer

A)  acetylcholine. 
B)  dopamine. 
C)  GABA. 
D)  glycine. 
E)  norepinephrine. 
A)  acetylcholine. 
B)  dopamine. 
C)  GABA. 
D)  glycine. 
E)  norepinephrine.

Question 20

When the blood pressure becomes elevated above normal,

Accepted Answer

A)  the carotid-sinus and aortic-arch baroreceptors increase their rate of firing. 
B)  the cardiovascular control center decreases sympathetic and increases parasympathetic activity to the heart and blood vessels. 
C)  arteriolar vasodilation occurs as a compensatory response. 
D)  two of these answers. 
E)  all of these answers. 
A)  the carotid-sinus and aortic-arch baroreceptors increase their rate of firing. 
B)  the cardiovascular control center decreases sympathetic and increases parasympathetic activity to the heart and blood vessels. 
C)  arteriolar vasodilation occurs as a compensatory response. 
D)  two of these answers. 
E)  all of these answers.

Which of the following is not a characteristic of capillaries?

Indicate whether arteriolar vasoconstriction or vasodilation would occur in the tissue in question by using the following answer code: -decreased O₂ in skeletal muscle

Describe how local chemical cues can control blood flow through an organ.

Indicate what effect the changes in question would have on blood flow, using the following answer code: -Increasing the length of a vessel.

Shock may develop

Which of the following changes could lead to edema?

Which of the following does not occur as a compensation for hemorrhage?

Indicate whether arteriolar vasoconstriction or vasodilation would occur in the tissue in question by using the following answer code: -increased stretch of arterioles supplying a particular tissue

Arterial walls contain a thick layer of smooth muscle and an abundance of collagen and elastin fibers.

A decrease in blood-colloid osmotic pressure will decrease ultrafiltration and increase reabsorption at the capillary level.

Each of the following local factors produces the relaxation of arteriolar smooth muscle except increased

Local chemical/metabolic influences on arteriolar radius include all of the following except:

Local control mechanisms can override sympathetic control of changes in the size of arterioles.

Skeletal muscle contractions working in conjunction with vein valves help move blood against gravity.

Indicate whether arteriolar vasoconstriction or vasodilation would occur in the tissue in question by using the following answer code: -parasympathetic discharge on skeletal muscle arterioles

Arteriolar resistance is regulated by both local controls and extrinsic controls.

Select the correct statement about veins.

Which does not cause arteriolar vasodilation?

Which of the following provides vascular tone?

When the blood pressure becomes elevated above normal,

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

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Exam 10: The Blood Vessels and Blood Pressure

Which of the following is not a characteristic of capillaries?

Indicate whether arteriolar vasoconstriction or vasodilation would occur in the tissue in question by using the following answer code: -decreased O2 in skeletal muscle

Describe how local chemical cues can control blood flow through an organ.

Indicate what effect the changes in question would have on blood flow, using the following answer code: -Increasing the length of a vessel.

Shock may develop

Which of the following changes could lead to edema?

Which of the following does not occur as a compensation for hemorrhage?

Indicate whether arteriolar vasoconstriction or vasodilation would occur in the tissue in question by using the following answer code: -increased stretch of arterioles supplying a particular tissue

Arterial walls contain a thick layer of smooth muscle and an abundance of collagen and elastin fibers.

A decrease in blood-colloid osmotic pressure will decrease ultrafiltration and increase reabsorption at the capillary level.

Each of the following local factors produces the relaxation of arteriolar smooth muscle except increased

Local chemical/metabolic influences on arteriolar radius include all of the following except:

Local control mechanisms can override sympathetic control of changes in the size of arterioles.

Skeletal muscle contractions working in conjunction with vein valves help move blood against gravity.

Indicate whether arteriolar vasoconstriction or vasodilation would occur in the tissue in question by using the following answer code: -parasympathetic discharge on skeletal muscle arterioles

Arteriolar resistance is regulated by both local controls and extrinsic controls.

Select the correct statement about veins.

Which does not cause arteriolar vasodilation?

Which of the following provides vascular tone?

When the blood pressure becomes elevated above normal,

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

Indicate whether arteriolar vasoconstriction or vasodilation would occur in the tissue in question by using the following answer code: -decreased O₂ in skeletal muscle