Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

NUR154 > Week 2 > Flashcards

Week 2 Flashcards

1
Q

The PRODUCT of the stroke volume times the heart rate is known as the

SELECTone:

a. end-diastolic volume.
b. end-systolic volume.
c. cardiac output.
d. cardiac reserve.
e. venous return.

A

c. cardiac output.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

In a normal electrocardiogram, the

SELECTone:

a. P wave results from repolarization of the atria.
b. QRS complex results from ventricular depolarization.
c. P wave occurs after the QRS complex but before the T wave.
d. T wave represents depolarization of the atria.
e. repolarization of the atria is clearly visible.

A

b. QRS complex results from ventricular depolarization.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Blood in the superior vena cava will ENTER the _____.

SELECTone:

a. aorta
b. right atrium
c. pulmonary trunk
d. pulmonary arteries
e. pulmonary veins

A

b. right atrium

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Which of the FOLLOWING sequences is correct?

SELECTone:

a. AV node, AV bundle, SA node, Purkinje fibers, bundle branches
b. Purkinje fibers, bundle branches, AV node, AV bundle, SA node
c. SA node, AV node, AV bundle, bundle branches, Purkinje fibers
d. SA node, AV bundle, AV node, bundle branches, Purkinje fibers
e. AV node, SA node, bundle branches, AV bundle, Purkinje fibers

A

c. SA node, AV node, AV bundle, bundle branches, Purkinje fibers

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

these vessels transport blood to the right and left lungs.

SELECTone:

a. aorta
b. right atrium
c. pulmonary trunk
d. pulmonary arteries
e. pulmonary veins

A

d. pulmonary arteries

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Blood vessels ENTER and exit from the _____ of the heart.

SELECTone:

a. apex
b. base
c. auricles
d. trigone
e. inferior aspect

A

b. base

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

If the heart receives more sympathetic stimulation than parasympathetic stimulation, the heart will

SELECTone:

a. increase its rate and force of contraction.
b. contract with greater force but at a slower rate.
c. decrease both its rate and force of contraction.
d. contract with less force but at a faster rate.
e. decrease rate, but increase force of contraction.

A

a. increase its rate and force of contraction.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

The “pacemaker” of the heart is the

SELECTone:

a. right bundle branch.
b. left bundle branch.
c. AV node.
d. SA node.
e. PM node.

A

d. SA node.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

The tricuspid valve is closed

SELECTone:

a. during active filling of the ventricles.
b. when the mitral valve is open.
c. while the atria are contracting.
d. during ejection.
e. during passive filling of the ventricles.

A

d. during ejection.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

An incompetent pulmonary semilunar valve could RESULT in less blood reaching the

SELECTone:

a. lungs.
b. heart muscle.
c. right ventricle.
d. aorta.
e. right atrium.

A

a. lungs.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

The AV valve that is located on the same side of the heart as the origin of the aorta is the

SELECTone:

a. bicuspid or mitral valve.
b. tricuspid valve.
c. aortic semilunar valve.
d. pulmonary semilunar valve.
e. coronary sinus valve.

A

a. bicuspid or mitral valve.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Contraction of the ventricles is referred to as ventricular

SELECTone:

a. systole.
b. diastole.
c. fibrillation.
d. ischemia.
e. depolarization.

A

a. systole.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Cardiac muscle cells

SELECTone:

a. have smooth ER but no T tubules.
b. form the heart valves.
c. are maintained by an extensive capillary network.
d. develop a significant oxygen debt during systole.
e. do not contain actin and myosin like skeletal muscle cells.

A

c. are maintained by an extensive capillary network.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

The P wave of an ECG INDICATES

SELECTone:

a. atrial depolarization.
b. atrial repolarization.
c. ventricular depolarization.
d. ventricular repolarization.
e. threshold.

A

a. atrial depolarization.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Which of the following phrases would APPLY to cardiac muscle cells?

SELECTone:

a. are organized in parallel columns or bundles
b. contain actin but no myosin
c. develop a significant oxygen debt during systole
d. are multinucleated like skeletal muscle cells.
e. possess special cell-to-cell contacts called intercalated discs

A

e. possess special cell-to-cell contacts called intercalated discs

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

The volume of blood pumped during each cardiac cycle is the

SELECTone:

a. stroke volume.
b. cardiac output.
c. cardiac reserve.
d. end-systolic volume.
e. end-diastolic volume.

A

a. stroke volume.

17
Q

The valve located between the right ventricle and the pulmonary trunk is the

SELECTone:

a. aortic semilunar valve.
b. pulmonary semilunar valve.
c. tricuspid valve.
d. mitral valve.
e. bicuspid valve.

A

b. pulmonary semilunar valve.

18
Q

Coronary artery disease can diminish myocardial blood flow RESULTING in the death of myocardial cells. This condition is known as a myocardial

SELECTone:

a. attack.
b. angina.
c. necrosis.
d. cirrhosis.
e. infarction.

A

e. infarction.

19
Q

If cardiac muscle cells are unable to repolarize, this would cause

SELECTone:

a. cardiac output to increase.
b. no harm. These cells can spontaneously depolarize anyway.
c. the heart rate to decrease. It might cause cardiac arrest.
d. an increased demand on mitochondria to produce more ATP.
e. tachycardia.

A

c. the heart rate to decrease. It might cause cardiac arrest.

20
Q

Blood in the pulmonary veins returns to the

SELECTone:

a. right atrium.
b. left atrium.
c. right ventricle.
d. left ventricle.
e. coronary sinus

A

b. left atrium.

21
Q

Which of the FOLLOWING is true?

SELECTone:

a. Blood enters the right and left atria only during diastole.
b. Most ventricular filling occurs before the atria contract.
c. During ventricular systole, the AV valves open.
d. The semilunar valves remain closed throughout ventricular systole.
e. Most of end-diastolic volume comes from active filling.

A

b. Most ventricular filling occurs before the atria contract.

22
Q

The long refractory period observed in cardiac muscle

SELECTone:

a. prolongs depolarization of the cardiac muscle.
b. prevents tetanic contractions of the cardiac muscle.
c. ensures that the heart has adequate time to contract.
d. prevents the heart rate from slowing down.
e. prevents an increase in heart rate.

A

b. prevents tetanic contractions of the cardiac muscle.

23
Q

In the cardiac cycle

SELECTone:

a. the right atrium and the right ventricle contract simultaneously.
b. the two atria relax while the two ventricles contract.
c. the left atrium contracts before the right atrium.
d. all four chambers of the heart contract at the same time.
e. all four chambers of the heart are in systole at the same time.

A

b. the two atria relax while the two ventricles contract.

24
Q

Which of the following layers forms the BULK of the heart wall?

SELECTone:

a. epicardium
b. pericardium
c. endocardium
d. myocardium
e. visceral pericardium

A

d. myocardium

25
Q

Blood returning to the heart from the systemic circuit first ENTERS the

SELECTone:

a. right atrium.
b. right ventricle.
c. left atrium.
d. left ventricle.
e. conus arteriosus.

A

a. right atrium.

26
Q

Ventricular contraction BEGINS at the

SELECTone:

a. AV bundle.
b. apex of the heart.
c. base of the heart.
d. superior portion of the interventricular septum.
e. top of the ventricles.

A

b. apex of the heart.

27
Q

These vessels empty blood into the left atrium.

SELECTone:

a. aorta
b. right atrium
c. pulmonary trunk
d. pulmonary arteries
e. pulmonary veins

A

e. pulmonary veins

28
Q

This blood vessel carries blood from the left ventricle.

SELECTone:

a. aorta
b. right atrium
c. pulmonary trunk
d. pulmonary arteries
e. pulmonary veins

A

a. aorta

29
Q

If the SA node is nonfunctional, which of the FOLLOWING is most likely to occur?

SELECTone:

a. The heart will go into asystole (stop).
b. Tachycardia will develop.
c. Another portion of the heart will become the pacemaker.
d. The heart will go into defibrillation.
e. The heart will be desensitized.

A

c. Another portion of the heart will become the pacemaker.

30
Q

Angina pectoris is chest pain caused by reduced

SELECTone:

a. stimulation of the myocardium.
b. blood supply to cardiac muscle.
c. fluid in the pericardial sac.
d. contractility of the heart.
e. action potentials from SA node.

A

b. blood supply to cardiac muscle.

31
Q

Which of the following will increase the heart rate?

Select one:

a. a rise in pH
b. an increase in the level of carbon dioxide in the blood
c. an increase in the level of blood oxygen
d. an increase in blood pressure
e. a decrease in the level of carbon dioxide in the blood

A

b. an increase in the level of carbon dioxide in the blood

32
Q

The chamber of the heart that endures the highest pressure is the

SELECTone:

a. right atrium.
b. left atrium.
c. right ventricle.
d. left ventricle.
e. coronary sinus.

A

d. left ventricle.

33
Q

An incompetent mitral valve may cause blood to BACK UP into the

SELECTone:

a. aorta.
b. left atrium.
c. left ventricle.
d. coronary circulation.
e. right atrium.

A

b. left atrium.

34
Q

Which of the FOLLOWING factors would cause an increase in heart rate?

SELECTone:

a. increased parasympathetic stimulation
b. stimulation of baroreceptors in the aorta
c. increased epinephrine (adrenalin) release from the adrenal medulla
d. increased production of atrial natriuretic factor
e. vagal stimulation

A

c. increased epinephrine (adrenalin) release from the adrenal medulla

35
Q

Stimulation of the heart via the sympathetic nerves would

SELECTone:

a. decrease heart rate.
b. decrease stroke volume.
c. increase the force of ventricular contraction.
d. increase end-systolic volume.
e. not affect heart rate and force of contraction

A

c. increase the force of ventricular contraction.

NUR154 (8 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions