Question 1

How many liters of blood are distributed between the pulmonary and systemic circuits in a "typical" person? Assume 20% of the blood is in the lungs at any moment.If the cardiac output is 5 L/min, how long will it take a drop of blood to flow from the right ventricle to the left ventricle?

Accepted Answer

There are about 5 liters of bl...

Question 2

When the heart is in fibrillation,

Accepted Answer

A)   the myocardial cells may become damaged from contracting too fast.
B)   the myocardial cells deplete their oxygen supply because they are contracting too fast, and the lactic acid produced damages the myocardial cells.
C)   effective pumping of the ventricles ceases because the myocardial cells fail to work as a team, and the brain cannot get adequate oxygen.
D)   the myocardial cells are contracting together as they should; fibrillation indicates a normal sinus rhythm of 75 beats per minute.
E)   there is no contraction of the myocardium.F) A) and D)
G) A) and B)

Question 3

If the EDV is 140 mL, which other values are most likely to occur in a healthy, normal person?

Accepted Answer

A)   The ESV could be 70 mL and the SV could be 90 mL.
B)   The ESV could be 90 mL and the SV could be 50 mL.
C)   The ESV could be 50 mL and the SV could be 90 mL.
D)   The cardiac output could be 90 mL.
E)   Diastolic pressure would be equal to EDV.F) A) and E)
G) B) and E)

Question 4

The term myogenic indicates that the heart muscle is the source of

Accepted Answer

A)   the contractile force for pumping.
B)   a hormone that indirectly regulates blood volume.
C)   the electrical signal that triggers heart contraction.
D)   receptors that trigger blood pressure reflexes.
E)   stem cells that repair damaged heart tissue.F) None of the above
G) A) and E)

Question 5

The contraction phase of the cardiac cycle is termed ________.

Accepted Answer

The answer of The contraction phase of the cardiac cycle...

Question 6

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

Accepted Answer

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

Question 7

Explain what is meant by the contractility of the heart.How is contractility controlled?

Accepted Answer

Contractility is the intrinsic ability o...

Question 8

Veins are said to carry deoxygenated blood.Does this mean that there is no oxygen in venous blood? Explain your answer.Are there veins that carry highly oxygenated blood? Again, explain your answer.What color is most venous blood compared to most arterial blood?

Accepted Answer

Venous blood has some oxygen, but usuall...

Question 9

According to Starling's law of the heart, the cardiac output is directly related to the

Accepted Answer

A)   size of the ventricle.
B)   heart rate.
C)   venous return.
D)   thickness of the myocardium.
E)   end-systolic volume.F) A) and B)
G) C) and E)

Question 10

The most accurate definition of artery is a vessel that

Accepted Answer

A)   carries highly oxygenated blood.
B)   contains smooth muscle in its wall.
C)   transports blood away from the heart.
D)   transports blood toward the heart.
E)   contains internal valves.F) D) and E)
G) C) and D)

Question 11

In which situation would the stroke volume be the greatest?

Accepted Answer

A)   when venous return is increased
B)   when venous return is decreased
C)   when the force of contraction is decreased
D)   when the difference between the end-diastolic volume and the end-systolic volume is small
E)   when calcium channel blockers are presentF) A) and D)
G) A) and C)

Question 12

Under which set of circumstances would the diameter of peripheral blood vessels be the greatest?

Accepted Answer

A)   increased sympathetic stimulation
B)   decreased sympathetic stimulation
C)   increased parasympathetic stimulation
D)   decreased parasympathetic stimulation
E)   both increased parasympathetic and increased sympathetic stimulationF) D) and E)
G) A) and C)

Question 13

Match the following terms to the correct answer:
-also called the mitral valve

Accepted Answer

A)  tricuspid valve
B)  bicuspid valve
C)  aortic valve
D)  pulmonary valveE) All of the above
F) A) and D)

Question 14

Ventricular contraction

Accepted Answer

A)   begins during the first part of the P wave.
B)   begins just after the T wave.
C)   begins just after the Q wave.
D)   begins during the latter part of the P wave.
E)   None of the answers are correct.F) A) and B)
G) A) and C)

Question 15

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 segmentF) A) and E)
G) All of the above

Question 16

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 17

As a result of the long refractory period, cardiac muscle cannot exhibit

Accepted Answer

A)   tonus.
B)   treppe.
C)   tetany.
D)   recruitment.
E)   fatigue.F) A) and D)
G) B) and D)

Question 18

Match the change with the cardiovascular event described.
-When a blood vessel dilates, blood viscosity is ________.

Accepted Answer

A)  increased
B)  decreased
C)  unchanged
D)  stoppedE) C) and D)
F) A) and D)

Question 19

Put these phases of the cardiac cycle in the correct order.
1) opening of the semilunar valves
2) isovolumic contraction
3) beginning of atrial systole
4) closure of the AV valves
5) completion of ventricular filling
6) beginning of ventricular systole
7) ventricular relaxation
8) ventricular ejection

Accepted Answer

A)   4, 5, 1, 2, 7, 8, 3, 6
B)   3, 2, 6, 1, 4, 5, 8, 7
C)   3, 5, 6, 4, 2, 1, 8, 7
D)   3, 5, 6, 1, 8, 4, 2, 7
E)   3, 2, 6, 4, 5, 8, 7, 1F) B) and C)
G) D) and E)

Question 20

Acetylcholine is excitatory at the neuromuscular junction, but inhibitory at the SA node.Explain why this is True.

Accepted Answer

Acetylcholine receptors in heart muscle ...

Exam 14: Cardiovascular Physiology

As a result of the long refractory period, cardiac muscle cannot exhibit

Correct Answer
verified

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.

Correct Answer
verified
The four areas for the autorhy...
View Answer

The contraction phase of the cardiac cycle is termed ________.

Correct Answer
verified

How many liters of blood are distributed between the pulmonary and systemic circuits in a "typical" person? Assume 20% of the blood is in the lungs at any moment.If the cardiac output is 5 L/min, how long will it take a drop of blood to flow from the right ventricle to the left ventricle?

Correct Answer
verified
There are about 5 liters of bl...
View Answer

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

Correct Answer
verified

Veins are said to carry deoxygenated blood.Does this mean that there is no oxygen in venous blood? Explain your answer.Are there veins that carry highly oxygenated blood? Again, explain your answer.What color is most venous blood compared to most arterial blood?

Correct Answer
verified
Venous blood has some oxygen, but usuall...
View Answer

If the EDV is 140 mL, which other values are most likely to occur in a healthy, normal person?

Correct Answer
verified

Correct Answer
verified

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

Correct Answer
verified

Match the change with the cardiovascular event described. -When a blood vessel dilates, blood viscosity is ________.

Correct Answer
verified

Ventricular contraction

Correct Answer
verified

Match the following terms to the correct answer: -also called the mitral valve

Correct Answer
verified

The term myogenic indicates that the heart muscle is the source of

Correct Answer
verified

Acetylcholine is excitatory at the neuromuscular junction, but inhibitory at the SA node.Explain why this is True.

Correct Answer
verified
Acetylcholine receptors in heart muscle ...
View Answer

In which situation would the stroke volume be the greatest?

Correct Answer
verified

When the heart is in fibrillation,

Correct Answer
verified

Explain what is meant by the contractility of the heart.How is contractility controlled?

Correct Answer
verified
Contractility is the intrinsic ability o...
View Answer

The most accurate definition of artery is a vessel that

Correct Answer
verified

Under which set of circumstances would the diameter of peripheral blood vessels be the greatest?

Correct Answer
verified

According to Starling's law of the heart, the cardiac output is directly related to the

Correct Answer
verified

Exam 14: Cardiovascular Physiology

As a result of the long refractory period, cardiac muscle cannot exhibit

Correct AnswerverifiedShow Answer

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.

Correct AnswerverifiedThe four areas for the autorhy...View AnswerShow Answer

The contraction phase of the cardiac cycle is termed ________.

Correct AnswerverifiedShow Answer

How many liters of blood are distributed between the pulmonary and systemic circuits in a "typical" person? Assume 20% of the blood is in the lungs at any moment.If the cardiac output is 5 L/min, how long will it take a drop of blood to flow from the right ventricle to the left ventricle?

Correct AnswerverifiedThere are about 5 liters of bl...View AnswerShow Answer

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

Correct AnswerverifiedShow Answer

Veins are said to carry deoxygenated blood.Does this mean that there is no oxygen in venous blood? Explain your answer.Are there veins that carry highly oxygenated blood? Again, explain your answer.What color is most venous blood compared to most arterial blood?

Correct AnswerverifiedVenous blood has some oxygen, but usuall...View AnswerShow Answer

If the EDV is 140 mL, which other values are most likely to occur in a healthy, normal person?

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

Match the change with the cardiovascular event described. -When a blood vessel dilates, blood viscosity is ________.

Correct AnswerverifiedShow Answer

Ventricular contraction

Correct AnswerverifiedShow Answer

Match the following terms to the correct answer: -also called the mitral valve

Correct AnswerverifiedShow Answer

The term myogenic indicates that the heart muscle is the source of

Correct AnswerverifiedShow Answer

Acetylcholine is excitatory at the neuromuscular junction, but inhibitory at the SA node.Explain why this is True.

Correct AnswerverifiedAcetylcholine receptors in heart muscle ...View AnswerShow Answer

In which situation would the stroke volume be the greatest?

Correct AnswerverifiedShow Answer

When the heart is in fibrillation,

Correct AnswerverifiedShow Answer

Explain what is meant by the contractility of the heart.How is contractility controlled?

Correct AnswerverifiedContractility is the intrinsic ability o...View AnswerShow Answer

The most accurate definition of artery is a vessel that

Correct AnswerverifiedShow Answer

Under which set of circumstances would the diameter of peripheral blood vessels be the greatest?

Correct AnswerverifiedShow Answer

According to Starling's law of the heart, the cardiac output is directly related to the

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
verified
The four areas for the autorhy...
View Answer

Correct Answer
verified

Correct Answer
verified
There are about 5 liters of bl...
View Answer

Correct Answer
verified

Correct Answer
verified
Venous blood has some oxygen, but usuall...
View Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
Acetylcholine receptors in heart muscle ...
View Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
Contractility is the intrinsic ability o...
View Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified