Question 1

If the left ventricle of the heart fails,blood backs up in the pulmonary capillary,

Accepted Answer

A)  decreasing plasma oncotic pressure and drying out the lung. 
B)  blocking the flow of lymph and drying out the lungs. 
C)  increasing capillary hydrostatic pressure and forcing fluid into the lungs. 
D)  increasing plasma oncotic pressure,causing pulmonary edema. 
A)  decreasing plasma oncotic pressure and drying out the lung. 
B)  blocking the flow of lymph and drying out the lungs. 
C)  increasing capillary hydrostatic pressure and forcing fluid into the lungs. 
D)  increasing plasma oncotic pressure,causing pulmonary edema.

Question 2

These blood vessels have very thin walls and are called the exchange vessels.

Accepted Answer

A)  arterioles 
B)  veins 
C)  capillaries 
D)  arteries 
A)  arterioles 
B)  veins 
C)  capillaries 
D)  arteries

Question 3

If the lymphatic vessels are blocked or surgically removed,

Accepted Answer

A)  excess fluid is filtered out of the capillary. 
B)  plasma oncotic pressure decreases,thereby causing fluid to leak out of the	capillary. 
C)  fluid and protein accumulate in the interstitium,thereby causing edema. 
D)  excess fluid moves into the capillary,thereby "drying out" the interstitium. 
A)  excess fluid is filtered out of the capillary. 
B)  plasma oncotic pressure decreases,thereby causing fluid to leak out of the	capillary. 
C)  fluid and protein accumulate in the interstitium,thereby causing edema. 
D)  excess fluid moves into the capillary,thereby "drying out" the interstitium.

Question 4

Which artery is most often used to measure the blood pressure?

Accepted Answer

A)  carotid artery 
B)  brachial artery 
C)  femoral artery 
D)  circle of Willis 
A)  carotid artery 
B)  brachial artery 
C)  femoral artery 
D)  circle of Willis

Question 5

Which of the following increases vascular resistance,stroke volume,and heart rate?

Accepted Answer

A)  stimulation of the vagus nerve 
B)  stimulation of the parasympathetic nervous system 
C)  administration of a sympatholytic drug 
D)  stimulation of the sympathetic nervous system 
A)  stimulation of the vagus nerve 
B)  stimulation of the parasympathetic nervous system 
C)  administration of a sympatholytic drug 
D)  stimulation of the sympathetic nervous system

Question 6

Which of the following exerts a vasopressor effect?

Accepted Answer

A)  diuretic 
B)  alpha1 adrenergic agonist 
C)  beta1 adrenergic antagonist 
D)  sympatholytic 
A)  diuretic 
B)  alpha1 adrenergic agonist 
C)  beta1 adrenergic antagonist 
D)  sympatholytic

Question 7

Which of the following structures has the greatest effect on vascular resistance?

Accepted Answer

A)  veins 
B)  arterioles 
C)  heart 
D)  capillaries 
A)  veins 
B)  arterioles 
C)  heart 
D)  capillaries

Question 8

If plasma oncotic pressure exceeds CHP,

Accepted Answer

A)  fluid is filtered from the capillary into the interstitium. 
B)  fluid moves osmotically into the capillary from the interstitium. 
C)  plasma proteins diffuse from the capillary into the interstitium. 
D)  blood volume decreases. 
A)  fluid is filtered from the capillary into the interstitium. 
B)  fluid moves osmotically into the capillary from the interstitium. 
C)  plasma proteins diffuse from the capillary into the interstitium. 
D)  blood volume decreases.

Question 9

If capillary hydrostatic pressure (CHP)exceeds plasma oncotic pressure,

Accepted Answer

A)  fluid moves from the interstitium into the capillary. 
B)  no net flux of water occurs. 
C)  blood volume expansion occurs. 
D)  fluid is filtered into the interstitium. 
A)  fluid moves from the interstitium into the capillary. 
B)  no net flux of water occurs. 
C)  blood volume expansion occurs. 
D)  fluid is filtered into the interstitium.

Question 10

The characteristic of the arteriole that allows it to function as a resistance vessel is its

Accepted Answer

A)  thin membrane. 
B)  porous membrane. 
C)  valves. 
D)  smooth muscle. 
A)  thin membrane. 
B)  porous membrane. 
C)  valves. 
D)  smooth muscle.

Question 11

Which of the following is most likely to induce a reflex bradycardia?

Accepted Answer

A)  development of hypovolemic (low blood volume)shock,as in hemorrhage 
B)  exertion of pressure over the carotid sinus (tight collar) 
C)  administration of nitroglycerine (a vasodilator drug) 
D)  administration of a diuretic for hypertension 
A)  development of hypovolemic (low blood volume)shock,as in hemorrhage 
B)  exertion of pressure over the carotid sinus (tight collar) 
C)  administration of nitroglycerine (a vasodilator drug) 
D)  administration of a diuretic for hypertension

Question 12

What do the baroreceptors regulate?

Accepted Answer

A)  blood volume 
B)  hematocrit 
C)  blood pressure 
D)  rate of capillary filtration 
A)  blood volume 
B)  hematocrit 
C)  blood pressure 
D)  rate of capillary filtration

Question 13

Which of the following drugs is most likely to increase vascular resistance?

Accepted Answer

A)  (+)inotropic agent 
B)  arteriolar constrictor 
C)  arteriolar dilator 
D)  vasodilator 
A)  (+)inotropic agent 
B)  arteriolar constrictor 
C)  arteriolar dilator 
D)  vasodilator

Question 14

Which of the following elevates blood pressure?

Accepted Answer

A)  diuretics 
B)  vasodilators 
C)  vasopressors 
D)  antihypertensive drugs 
A)  diuretics 
B)  vasodilators 
C)  vasopressors 
D)  antihypertensive drugs

Question 15

A sphygmomanometer measures

Accepted Answer

A)  blood flow. 
B)  hematocrit. 
C)  blood pressure. 
D)  oxygen saturation. 
A)  blood flow. 
B)  hematocrit. 
C)  blood pressure. 
D)  oxygen saturation.

Question 16

A newly diagnosed hypertensive patient is started on prazosin.Within the hour,he complains of dizziness and loses consciousness.What has happened?

Accepted Answer

A)  The drug activated the baroreceptors causing an intense parasympathetic discharge,thereby increasing blood pressure and precipitating a mild stroke. 
B)  The prazosin has decreased his blood pressure too much;the drug-induced hypotension caused the fainting event (syncope). 
C)  The prazosin causes spasm of the cerebral blood vessels,which,in turn,causes loss of consciousness. 
D)  The patient experienced a hypertensive crisis. 
A)  The drug activated the baroreceptors causing an intense parasympathetic discharge,thereby increasing blood pressure and precipitating a mild stroke. 
B)  The prazosin has decreased his blood pressure too much;the drug-induced hypotension caused the fainting event (syncope). 
C)  The prazosin causes spasm of the cerebral blood vessels,which,in turn,causes loss of consciousness. 
D)  The patient experienced a hypertensive crisis.

Question 17

Blood pressure is lowest in the

Accepted Answer

A)  inferior vena cava. 
B)  aorta. 
C)  circle of Willis. 
D)  femoral artery. 
A)  inferior vena cava. 
B)  aorta. 
C)  circle of Willis. 
D)  femoral artery.

Question 18

Both epinephrine and norepinephrine are

Accepted Answer

A)  steroids. 
B)  secreted by the adrenal cortex. 
C)  vasopressors. 
D)  blood pressure-lowering hormones. 
A)  steroids. 
B)  secreted by the adrenal cortex. 
C)  vasopressors. 
D)  blood pressure-lowering hormones.

Question 19

Capillary hydrostatic pressure is a reflection of

Accepted Answer

A)  plasma proteins. 
B)  albumin. 
C)  lymph. 
D)  blood pressure. 
A)  plasma proteins. 
B)  albumin. 
C)  lymph. 
D)  blood pressure.

Exam 19: Functions of the Blood Vessels

If the left ventricle of the heart fails,blood backs up in the pulmonary capillary,

These blood vessels have very thin walls and are called the exchange vessels.

If the lymphatic vessels are blocked or surgically removed,

Which artery is most often used to measure the blood pressure?

Which of the following increases vascular resistance,stroke volume,and heart rate?

Which of the following exerts a vasopressor effect?

Which of the following structures has the greatest effect on vascular resistance?

If plasma oncotic pressure exceeds CHP,

If capillary hydrostatic pressure (CHP)exceeds plasma oncotic pressure,

The characteristic of the arteriole that allows it to function as a resistance vessel is its

Which of the following is most likely to induce a reflex bradycardia?

What do the baroreceptors regulate?

Which of the following drugs is most likely to increase vascular resistance?

Which of the following elevates blood pressure?

A sphygmomanometer measures

A newly diagnosed hypertensive patient is started on prazosin.Within the hour,he complains of dizziness and loses consciousness.What has happened?

Blood pressure is lowest in the

Both epinephrine and norepinephrine are

Capillary hydrostatic pressure is a reflection of

Introduction to the Human Body

Basic Chemistry

Cells

Cell Metabolism

Microbiology Basics

Tissues and Membranes

Integumentary System and Body Temperature

Skeletal System

Muscular System

Nervous System: Nervous Tissue and Brain

Nervous System: Spinal Cord and Peripheral Nerves

Autonomic Nervous System

Sensory System

Endocrine System

Blood

Heart

Function of the Heart

Anatomy of the Blood Vessels

Lymphatic System

Immune System

Respiratory System

Digestive System

Urinary System

Water,Electrolyte,and Acid-Base Balance

Reproductive Systems

Human Development and Heredity

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