Question 1

Each of the following factors promotes the function of the capillaries except

Accepted Answer

A)  a blood pressure forcing fluid out of these vessels 
B)  a small total surface area 
C)  an osmotic pressure drawing fluid into these vessels 
D)  pores in the endothelial wall 
E)  thin walls 
A)  a blood pressure forcing fluid out of these vessels 
B)  a small total surface area 
C)  an osmotic pressure drawing fluid into these vessels 
D)  pores in the endothelial wall 
E)  thin walls

Question 2

Most sympathetic fibers release ____ at arterioles.

Accepted Answer

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

Question 3

Measurement of arterial pressure using a sphygmomanometer is possible because turbulent blood flow that occurs as arterial pressure overcomes a partially occluded artery and can be heard by a stethoscope placed just over the artery.

Accepted Answer

A) True 
 B)False

Question 4

When the heart is not ejecting blood into the arterial system, the pressure in the arteries falls to zero as blood drains off into the rest of the vasculature.

Accepted Answer

A) True 
 B)False

Question 5

Complete each of the following statments.
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 6

Organs that recondition the blood

Accepted Answer

A)  receive disproportionately large percentages of the cardiac output 
B)  can withstand temporary reductions in blood flow much better than organs that do not recondition the blood 
C)  must receive a constant blood supply in order to maintain homeostasis 
D)  receive disproportionately large percentages of the cardiac output and can withstand temporary reductions in blood flow much better than organs that do not recondition the blood 
E)  receive disproportionately large percentages of the cardiac output and must receive a constant blood supply in order to maintain homeostasis 
A)  receive disproportionately large percentages of the cardiac output 
B)  can withstand temporary reductions in blood flow much better than organs that do not recondition the blood 
C)  must receive a constant blood supply in order to maintain homeostasis 
D)  receive disproportionately large percentages of the cardiac output and can withstand temporary reductions in blood flow much better than organs that do not recondition the blood 
E)  receive disproportionately large percentages of the cardiac output and must receive a constant blood supply in order to maintain homeostasis

Question 7

Complete each of the following statments.
Venous capacity depends on the ____________________ of the vein walls.

Accepted Answer

The answer of Complete each of the following statments.
Venous capacity...

Question 8

What is the primary reason that edema may occur with serious burns?

Accepted Answer

A)  increased venous pressure due to interference with circulation through scarring in the burned area 
B)  lowering of blood osmotic pressure due to the loss of protein-rich fluid from the surface of the burn 
C)  blockage of lymphatic drainage from the burned area 
D)  loss of protein in the urine 
E)  increased tissue pressure 
A)  increased venous pressure due to interference with circulation through scarring in the burned area 
B)  lowering of blood osmotic pressure due to the loss of protein-rich fluid from the surface of the burn 
C)  blockage of lymphatic drainage from the burned area 
D)  loss of protein in the urine 
E)  increased tissue pressure

Question 9

The venous valves

Accepted Answer

A)  actively contract to force blood uphill against gravity 
B)  passively close to prevent the backflow of blood in the veins 
C)  are positioned at the entrances to the atria 
D)  actively contract to force blood uphill against gravity and passively close to prevent the backflow of blood in the veins 
E)  all of these 
A)  actively contract to force blood uphill against gravity 
B)  passively close to prevent the backflow of blood in the veins 
C)  are positioned at the entrances to the atria 
D)  actively contract to force blood uphill against gravity and passively close to prevent the backflow of blood in the veins 
E)  all of these

Question 10

In most tissues, glucose, a water-soluble substance, crosses capillary walls through

Accepted Answer

A)  water-filled pores 
B)  endothelial cells 
C)  sinusoids 
D)  water-filled pores and endothelial cells 
E)  water-filled pores and sinusoids 
A)  water-filled pores 
B)  endothelial cells 
C)  sinusoids 
D)  water-filled pores and endothelial cells 
E)  water-filled pores and sinusoids

Question 11

Complete each of the following statments.
The receptors for the baroreceptor reflex are located in the ____________________ and ____________________.

Accepted Answer

carotid si

Question 12

The major determinant influencing resistance to blood flow is the

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)  concentration of red blood cells in the blood 
E)  amount of plasma protein 
A)  viscosity of the blood 
B)  radius of the vessel through which the blood is flowing 
C)  pressure gradient in the vessel 
D)  concentration of red blood cells in the blood 
E)  amount of plasma protein

Question 13

Extrinsic control of arteriolar radius

Accepted Answer

A)  is accomplished primarily by the sympathetic nervous system 
B)  is important in the regulation of arterial blood pressure 
C)  can be overridden by local adjustments 
D)  is accomplished primarily by the sympathetic nervous system and is important in the regulation of arterial blood pressure 
E)  all of these 
A)  is accomplished primarily by the sympathetic nervous system 
B)  is important in the regulation of arterial blood pressure 
C)  can be overridden by local adjustments 
D)  is accomplished primarily by the sympathetic nervous system and is important in the regulation of arterial blood pressure 
E)  all of these

Question 14

Which local chemical factor is not associated with vasodilation of arterioles?

Accepted Answer

A)  decreased prostaglandins in the tissue fluid 
B)  increased CO2 
C)  increased acid 
D)  decreased O2 
E)  histamine release 
A)  decreased prostaglandins in the tissue fluid 
B)  increased CO2 
C)  increased acid 
D)  decreased O2 
E)  histamine release

Question 15

The effective circulating volume is reduced when blood collects in distended varicose veins.

Accepted Answer

A) True 
 B)False

Question 16

Complete each of the following statments.
Mean arterial pressure is determined by the equation ____________________ x ____________________.

Accepted Answer

cardiac ou

Question 17

Mean arterial blood pressure

Accepted Answer

A)  equals stroke volume times heart rate 
B)  is 91 mm Hg when the blood pressure is recorded as 117/78 
C)  is 97.5 mm Hg when the blood pressure is recorded as 117/78 
D)  equals stroke volume times heart rate and is 91 mm Hg when the blood pressure is recorded as 117/78 
E)  equals stroke volume times heart rate and is 97.5 mm Hg when the blood pressure is recorded as 117/78 
A)  equals stroke volume times heart rate 
B)  is 91 mm Hg when the blood pressure is recorded as 117/78 
C)  is 97.5 mm Hg when the blood pressure is recorded as 117/78 
D)  equals stroke volume times heart rate and is 91 mm Hg when the blood pressure is recorded as 117/78 
E)  equals stroke volume times heart rate and is 97.5 mm Hg when the blood pressure is recorded as 117/78

Question 18

Plasma proteins are primarily responsible for the blood's viscosity, while the concentration of red blood cells greatly influences blood osmotic pressure.

Accepted Answer

A) True 
 B)False

Question 19

Which of the following is not a function of the lymphatic system?

Accepted Answer

A)  defense against disease 
B)  return of fluid to the circulatory system 
C)  transport of fat molecules 
D)  regulation of sodium balance 
E)  return of proteins to the circulatory system 
A)  defense against disease 
B)  return of fluid to the circulatory system 
C)  transport of fat molecules 
D)  regulation of sodium balance 
E)  return of proteins to the circulatory system

Question 20

Which 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 
E)  increased renal reabsorption of salt and water 
A)  fluid shift from ICF to plasma 
B)  venous vasoconstriction 
C)  lowered angiotensin II production 
D)  thirst 
E)  increased renal reabsorption of salt and water

Exam 10: The Blood Vessels and Blood Pressure

Each of the following factors promotes the function of the capillaries except

Most sympathetic fibers release ____ at arterioles.

Measurement of arterial pressure using a sphygmomanometer is possible because turbulent blood flow that occurs as arterial pressure overcomes a partially occluded artery and can be heard by a stethoscope placed just over the artery.

When the heart is not ejecting blood into the arterial system, the pressure in the arteries falls to zero as blood drains off into the rest of the vasculature.

Organs that recondition the blood

Complete each of the following statments. Venous capacity depends on the ____________________ of the vein walls.

What is the primary reason that edema may occur with serious burns?

The venous valves

In most tissues, glucose, a water-soluble substance, crosses capillary walls through

Complete each of the following statments. The receptors for the baroreceptor reflex are located in the ____________________ and ____________________.

The major determinant influencing resistance to blood flow is the

Extrinsic control of arteriolar radius

Which local chemical factor is not associated with vasodilation of arterioles?

The effective circulating volume is reduced when blood collects in distended varicose veins.

Complete each of the following statments. Mean arterial pressure is determined by the equation ____________________ x ____________________.

Mean arterial blood pressure

Plasma proteins are primarily responsible for the blood's viscosity, while the concentration of red blood cells greatly influences blood osmotic pressure.

Which of the following is not a function of the lymphatic system?

Which is not a compensation mechanism for blood loss?

Introduction to Physiology and Homeostasis

Cell Physiology

The Plasma Membrane and Membrane Potential

Principles of Neural and Hormonal Communication

A--The Central Nervous System

B--The Central Nervous System

A--The Peripheral Nervous System: Afferent Division; Special Senses

B--The Peripheral Nervous System: Afferent Division; Special Senses

The Peripheral Nervous System: Efferent Division

A--Muscle Physiology

B--Muscle Physiology

A--Cardiac Physiology

B--Cardiac Physiology

The Blood

Body Defenses

A--The Respiratory System

B--The Respiratory System

A--The Urinary System

B--The Urinary System

A--Fluid and Acid-Base Balance

B--Fluid and Acid-Base Balance

A--The Digestive System

B--The Digestive System

Energy Balance and Temperature Regulation

A--Principles of Endocrinology: the Central Endocrine Glands

B--Principles of Endocrinology: the Central Endocrine Glands

A--The Peripheral Endocrine Glands

B--The Peripheral Endocrine Glands

A--The Reproductive System

B--The Reproductive System

Filters

Complete each of the following statments. The receptors for the baroreceptor reflex are located in the and .

Complete each of the following statments. Mean arterial pressure is determined by the equation x .