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Electrical Conduction of Heart and EKG

Total questions: 45

Worksheet time: 39mins

Name
Class
Date
1.

Which part starts the first step in the electrical conduction system?

a)

sinoatrial node

b)

AV node

c)

AV Bundle branches

d)

Purkinge fibers

2.

Which part would be second in the electrical conduction system?

a)

sinoatrial node

b)

AV node

c)

AV Bundle branches

d)

Purkinge fibers

3.

Unlike skeletal mucle tissue which is also striated, cardiac muscle is branched. What does this allow?

a)

contraction of the entire heart in a coordinated way

b)

contraction of the heart in one direction

c)

contraction of the heart all at once

d)

contraction of the heart from side to side

4.

Which part would be third in the electrical conduction system?

a)

sinoatrial node

b)

AV node

c)

AV Bundle (bundle if His)

d)

Purkinge fibers

5.

Contraction of the ventricles is associated with what part of the electrical conduction system?

a)

sinoatrial node

b)

AV node

c)

AV Bundle branches

d)

Purkinge fibers

6.

Diastole is associated with

a)

contraction of the heart

b)

relaxation of the heart

c)

myocardial infarction

d)

angina

7.

What is a cardiac cycle?

a)

the number of beats per minute

b)

the volume of blood ejected with each left ventricular stroke

c)

everything that goes on in the heart from one heart beat to the next

d)

the ability of the heart to turn around

8.

Which of the following is represents a cardiac cycle?

a)

PQRST

b)

QT interval

c)

QRS Complex

d)

PR Interval

9.

Relaxation of the heart corresponds to

a)

T wave and baseline

b)

P wave

c)

QRS Complex

d)

PR Interval

10.

On an ECG, the P wave represents __________________________.

a)

Contraction of the Atria

b)

Contration of the Ventricle

c)

The pause at the AV node

d)

The impulse traveling through the bundle branches

11.

What wave on a rhythm strip indicates the repolarization of the ventricles?

a)

P

b)

Q

c)

R

d)

S

e)

T

12.

Which of the following best describes this strip?

a)

Tachycardia

b)

Normal Sinus Rhythm

c)

Bradycardia

d)

Asystole

13.

The PCT is monitoring the client’s electrocardiography (ECG). What does the P wave on the ECG tracing represent?

a)

Contraction of the atria

b)

Contraction of the ventricles

c)

Depolarization of the atria

d)

Depolarization of the ventricles

14.

QRS

a)

Repolarization or recovery of the ventricles

b)

Impulses hit av bundle branch off into two bundles down front of heart into purkinje fibers

c)

SA Nodes contracts

Both atria contracts

d)

Impulses reach the av node 0.10 delay allows atria

15.

The pacemaker of the heart

a)

AV node

b)

SA node

c)

Bundle of His

d)

Bundle branches

16.
Which one of the following represents the correct path for the transmission of an impulse in the intrinsic conduction system of the heart?
a)
AV node, Bundle of His, SA node, Purkinje fibers, bundle branches
b)
SA node, AV node, Bundle of His, bundle branches, Purkinje fibers
c)
SA node, Bundle of His, AV node, Purkinje fibers, bundle branches
d)
SA node, Bundle of His, bundle branches, Purkinje fibers, AV node
17.
Which label is representing the Purkinje fibers?
a)
A
b)
C
c)
D
d)
E
18.
Place the following in the correct order:
     1.atria contract
     2. AV node
     3. Bundle of His
     4.Purkinje fibers
     5. SA node
     6. ventricles contract
a)
5, 1, 2, 3, 4, 6
b)
2, 1, 5, 3, 4, 6
c)
5, 6, 2, 3, 4, 1
d)
2, 6, 5, 3, 4, 1
19.
The number of times the heart ventricles beat in one minute is known as?
a)
Heart Rate
b)
Stroke Volume
c)
Cardiac Output
20.

Recording of electrical changes that occur during the cardiac cycle is referred to as

a)

blood pressure reading

b)

ECG

c)

QRS wave

d)

T Wave

21.
Which of the following is not a direct indicator of a person's cardiac health?
a)
Heart Rate
b)
Blood Pressure
c)
EKG
d)
Temperature 
22.

Name this part of the ekg tracing.

a)

P

b)

R

c)

Q

d)

T

23.

Name this part of the EKG tracing.

a)

P

b)

Q

c)

R

d)

S

24.

Name this part of the ekg tracing.

a)

P

b)

Q

c)

R

d)

S

25.

If the P wave on an EKG looks abnormal, which structures in the heart are likely damaged?

a)

SA/AV node

b)

Aortic valve

c)

Bundle of His

d)

Purkinje fibers

26.

What does depolarization result in?

a)

relaxation

b)

contraction

c)

repulsion

d)

attraction

27.
What is going on in the heart during the R-wave or QRS complex
a)
SA node triggers depolarization in atria
b)
AV node triggers depolarization in ventricle, the main pumpung action
c)
Delay caused by the SA node
d)
Repolarization of the ventricle 
28.

Intrinsic electrical impulses start at which of the following locations?

a)

AV Node

b)

Bundle of His

c)

Purkinje fibers

d)

SA Node

29.

Which of the following is most likely to occur if there is a blockage to the AV bundle nerve impulse?

a)

the AV Node will not produce electrical impulses

b)

the SA Node will not produce electrical impulses

c)

no effect

d)

the Purkinje fibers will not produce electrical impulses

30.

A cardiac cycle is:

a)

ventricular relaxation

b)

ventricular contraction

c)

equivalent to 1 complete heart beat

d)

a heart attack

31.
Blood pressure is greatest:
a)
when the heart is between contraction and relaxation.
b)
when the atria contract.
c)
when the ventricles contract.
d)
when the patient is lying down.
32.
The term that means heart contraction is ________.
a)
diastole
b)
systole
c)
tachycardia
d)
fibrillation
33.

A heart rate 100 bpm or above is called _______.

a)

bradycardia

b)

tachycardia

c)

arrhythmia

d)

fibrillation

34.

What is the effect of narrowed arteries on a person's blood flow and pressure?

a)

increased blood flow and increased pressure

b)

increased blood flow and decreased pressure

c)

decreased blood flow and increased pressure

d)

decreased blood flow and decreased pressure

35.

A person has a blood pressure of 145/90 mmHg. How would you categorize their blood pressure?

a)

normal range

b)

prehypertension

c)

hypertension

d)

hypotension

36.

Normal blood pressure is

a)

80/140mmHg

b)

140/90mmHg

c)

120/80mmHg

d)

80/120mmHg

37.

What's wrong with this EKG?

a)

Atria aren't contracting

b)

Ventricles aren't contracting

c)

Ventricles aren't relaxing

d)

Nothing is wrong. This is a normal EKG.

38.

True or False: Your heart needs a signal from your brain in order for it to keep its normal rhythm.

a)

True

b)

False

39.

What makes the "lub" sound of your heart?

a)

The aorta sending blood to the rest of your body

b)

The Superior and Inferior Vena Cava sending blood into the atria

c)

The SL valves closing

d)

The AV valves closing

40.

The sounds made by the heart are due the contractions of the atria and ventricles.

a)

True

b)

False

41.

The heart makes a LUB / DUB sound. What causes the DUB sound?

a)

Atria Contracting

b)

AV Valves Closing

c)

Ventricles Contracting

d)

SL Valves Closing

42.

What is the volume of blood ejected by the ventricle in one minute called?

a)

stroke volume

b)

cardiac cycle

c)

coronary volume

d)

cardiac output

43.
The VOLUME of blood pumped out of a ventricle with each heartbeat is known as ________ 
a)
Heart Rate
b)
Stroke Volume
c)
Cardiac Output
d)
Blood Pressure
44.
Abnormal rhythm of the heart.
a)
Arrhythmia
b)
Rap
c)
Stroke
45.
When the heart rate is less than 60 beats per minute.
a)
Bradycardia  
b)
Tachycardia
c)
Leukemia

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