Question 1

Distinguish between blood flow rate and blood flow velocity.When an expert in the field uses the term blood flow,does that term usually mean rate or velocity?

Accepted Answer

Flow rate is the volume of blo

Question 2

Match the name of the wave with the correlated event.
-ventricular depolarization

Accepted Answer

A) P wave 
B) QRS complex 
C) T wave 
D) PR segment 
E) ST segment 
A) P wave 
B) QRS complex 
C) T wave 
D) PR segment 
E) ST segment

Question 3

A typical action potential of a myocardial contractile cell lasts ________ millisecond(s).

Accepted Answer

A)  less than 1 
B)  1-5 
C)  50-100 
D)  at least 200 
E)  at least 500 
A)  less than 1 
B)  1-5 
C)  50-100 
D)  at least 200 
E)  at least 500

Question 4

The ECG of a person suffering from complete heart block would show

Accepted Answer

A)  an increased PR interval. 
B)  an inverted P wave. 
C)  no visible T wave. 
D)  a smaller QRS complex. 
E)  more P waves than QRS complexes per minute. 
A)  an increased PR interval. 
B)  an inverted P wave. 
C)  no visible T wave. 
D)  a smaller QRS complex. 
E)  more P waves than QRS complexes per minute.

Question 5

An increase in blood vessel diameter is known as ________.

Accepted Answer

The answer of An increase in blood vessel diameter is...

Question 6

The action potential in a cardiac contractile cell causes

Accepted Answer

A)  opening of L-type calcium channels. 
B)  opening of ryanodine receptor calcium channels. 
C)  activation of sodium-potassium ATPase. 
D)  activation of NCX transporters. 
E)  opening of HCN channels. 
A)  opening of L-type calcium channels. 
B)  opening of ryanodine receptor calcium channels. 
C)  activation of sodium-potassium ATPase. 
D)  activation of NCX transporters. 
E)  opening of HCN channels.

Question 7

The chambers of the heart that receive blood from the veins are the ________.

Accepted Answer

The answer of The chambers of the heart that receive...

Question 8

List the four types of autorhythmic cells that drive the heartbeat.Draw a sketch of the heart and indicate the location of each type of cell.

Accepted Answer

The four areas for the autorhy

Question 9

In which of the following situations would the end-systolic volume (ESV)be the greatest?

Accepted Answer

A)  when sympathetic stimulation of the heart is increased 
B)  when parasympathetic stimulation of the heart is increased 
C)  when the force of myocardial contraction is increased 
D)  when the intracellular stores of calcium are increased 
E)  when stroke volume is increased 
A)  when sympathetic stimulation of the heart is increased 
B)  when parasympathetic stimulation of the heart is increased 
C)  when the force of myocardial contraction is increased 
D)  when the intracellular stores of calcium are increased 
E)  when stroke volume is increased

Question 10

The term for reduced blood flow to the cardiac muscle is ________.

Accepted Answer

The answer of The term for reduced blood flow to...

Question 11

The muscle layer of the heart wall is the ________.

Accepted Answer

The answer of The muscle layer of the heart wall...

Question 12

Which of these will increase the heart rate?

Accepted Answer

A)  only sympathetic stimulation to the SA node 
B)  only the application of epinephrine to the SA node 
C)  only the application of acetylcholine to the SA node 
D)  both sympathetic stimulation and application of epinephrine to the SA node 
E)  both sympathetic stimulation and application of acetylcholine to the SA node 
A)  only sympathetic stimulation to the SA node 
B)  only the application of epinephrine to the SA node 
C)  only the application of acetylcholine to the SA node 
D)  both sympathetic stimulation and application of epinephrine to the SA node 
E)  both sympathetic stimulation and application of acetylcholine to the SA node

Question 13

List and explain the three types of substances transported by the blood.What is the source of each type?

Accepted Answer

Nutrients,water,and gases from the exter

Question 14

Stimulation of the beta receptors on heart muscle results in

Accepted Answer

A)  the formation of cAMP. 
B)  decreased rate of contraction. 
C)  decreased force of cardiac contraction. 
D)  increased sensitivity to acetylcholine. 
E)  All of the answers are correct. 
A)  the formation of cAMP. 
B)  decreased rate of contraction. 
C)  decreased force of cardiac contraction. 
D)  increased sensitivity to acetylcholine. 
E)  All of the answers are correct.

Question 15

ECGs

Accepted Answer

A)  provide direct information about the heart function. 
B)  are most useful in diagnosing heart murmurs. 
C)  show the summed electrical potentials generated by all cells of the heart. 
D)  have two major components: waves and nodes. 
E)  measure the mechanical activity of the heart. 
A)  provide direct information about the heart function. 
B)  are most useful in diagnosing heart murmurs. 
C)  show the summed electrical potentials generated by all cells of the heart. 
D)  have two major components: waves and nodes. 
E)  measure the mechanical activity of the heart.

Question 16

Which parameters are associated with increased resistance?

Accepted Answer

A)  reduced flow 
B)  reduced friction 
C)  increased blood vessel diameter 
D)  decreased viscosity 
E)  decreased length 
A)  reduced flow 
B)  reduced friction 
C)  increased blood vessel diameter 
D)  decreased viscosity 
E)  decreased length

Question 17

Which artery/arteries branch(es)is/are most proximal to the beginning of the aorta at the heart?

Accepted Answer

A)  hepatic 
B)  renal 
C)  coronary 
D)  carotid 
E)  pulmonary 
A)  hepatic 
B)  renal 
C)  coronary 
D)  carotid 
E)  pulmonary

Question 18

Myocardial cells can generate action potentials spontaneously because they have

Accepted Answer

A)  unstable ion channels. 
B)  permanently open channels for Na+ and K+. 
C)  a net influx of Na+. 
D)  L-type Ca2+ channels. 
E)  prolonged Ca2+ influx. 
A)  unstable ion channels. 
B)  permanently open channels for Na+ and K+. 
C)  a net influx of Na+. 
D)  L-type Ca2+ channels. 
E)  prolonged Ca2+ influx.

Question 19

The ________ circuit carries blood to and from the alveoli of the lungs.

Accepted Answer

The answer of The ________ circuit carries blood to and...

Question 20

The rapid depolarization phase of the action potentials of myocardial contractile cells is due to which ion(s)?

Accepted Answer

A)  Ca2+ only 
B)  K+ only 
C)  Na+ only 
D)  both Ca2+ and K+ 
E)  both Na+ and K+ 
A)  Ca2+ only 
B)  K+ only 
C)  Na+ only 
D)  both Ca2+ and K+ 
E)  both Na+ and K+

Exam 14: Cardiovascular Physiology

Distinguish between blood flow rate and blood flow velocity.When an expert in the field uses the term blood flow,does that term usually mean rate or velocity?

Match the name of the wave with the correlated event. -ventricular depolarization

A typical action potential of a myocardial contractile cell lasts ________ millisecond(s).

The ECG of a person suffering from complete heart block would show

An increase in blood vessel diameter is known as ________.

The action potential in a cardiac contractile cell causes

The chambers of the heart that receive blood from the veins are the ________.

List the four types of autorhythmic cells that drive the heartbeat.Draw a sketch of the heart and indicate the location of each type of cell.

In which of the following situations would the end-systolic volume (ESV)be the greatest?

The term for reduced blood flow to the cardiac muscle is ________.

The muscle layer of the heart wall is the ________.

Which of these will increase the heart rate?

List and explain the three types of substances transported by the blood.What is the source of each type?

Stimulation of the beta receptors on heart muscle results in

ECGs

Which parameters are associated with increased resistance?

Which artery/arteries branch(es)is/are most proximal to the beginning of the aorta at the heart?

Myocardial cells can generate action potentials spontaneously because they have

The ________ circuit carries blood to and from the alveoli of the lungs.

The rapid depolarization phase of the action potentials of myocardial contractile cells is due to which ion(s)?

Introduction to Physiology

Molecular Interactions

Compartmentation: Cells and Tissues

Energy and Cellular Metabolism

Membrane Dynamics

Communication, Integration, and Homeostasis

Introduction to the Endocrine System

Neurons: Cellular and Network Properties

The Central Nervous System

Sensory Physiology

Efferent Division: Autonomic and Somatic Motor Control

Muscles

Integrative Physiology I: Control of Body Movement

Blood Flow and the Control of Blood Pressure

Blood

Mechanics of Breathing

Gas Exchange and Transport

The Kidneys

Integrative Physiology II: Fluid and Electrolyte Balance

The Digestive System

Metabolism and Energy Balance

Endocrine Control of Growth and Metabolism

The Immune System

Integrative Physiology III: Exercise

Reproduction and Development

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