Question 1

The top of the heart, where the great vessels enter and leave, is the

Accepted Answer

Base

Answer

Tricuspid valve

Answer

Chordae tendonae

Answer

Apex

Question 2

The fibrous tissue that divides the heart into right and left sides is the

Accepted Answer

Septum

Answer

Chordae tendonae

Answer

Papillary muscle

Answer

Pulmonary/pulmonic valve

Question 3

The apex of the heart is located at the

Accepted Answer

Bottom of the heart, at the leftmost tip

Answer

Top of the heart

Answer

Right side of the heart

Answer

The back wall of the heart

Question 4

The innermost layer of the heart is the

Accepted Answer

Endocardium

Answer

Myocardium

Answer

Pericardium

Answer

Epicardium

Question 5

The layer of the heart that is damaged during a heart attack is the muscular

Accepted Answer

Myocardium

Answer

Pericardium

Answer

Epicardium

Answer

Endocardium

Question 6

Which of the following statements about the right atrium is true?

Accepted Answer

It is the receiving chamber for deoxygenated blood coming from the vena cavae

Answer

It is a receiving chamber for oxygenated blood returning from the lungs

Answer

It is the major pumping chamber of the heart

Answer

It is about 100% saturated with oxygen

Question 7

Which heart chamber delivers oxygenated blood to the entire body?

Accepted Answer

Left ventricle

Answer

Left atrium

Answer

Right ventricle

Answer

Right atrium

Question 8

The heart’s valves open and close in response to changes in

Accepted Answer

Pressure

Answer

The heart’s pacemaker

Answer

Oxygenation

Answer

Sodium and potassium concentration

Question 9

Heart valves serve what purpose?

Accepted Answer

They prevent backflow of blood

Answer

They prevent blood from flowing forward

Answer

They control the heart’s electrical signals

Answer

They prevent blood from flowing through the coronary arteries

Question 10

The valve that separates the right atrium and right ventricle is the

Accepted Answer

Tricuspid valve

Answer

Aortic valve

Answer

Mitral valve

Answer

Pulmonary valve

Question 11

Which of the following are both AV valves?

Accepted Answer

Tricuspid and mitral valves

Question 12

The first heart sound (S1) is associated with closure of which heart valves?

Accepted Answer

Tricuspid and mitral

Answer

Mitral and aortic

Answer

Tricuspid and pulmonary

Answer

Aortic and pulmonary

Question 13

The second heart sound (S2) is associated with closure of which heart valves?

Accepted Answer

Aortic and pulmonary

Answer

Tricuspid and pulmonary

Answer

Tricuspid and mitral

Answer

Mitral and aortic

Question 14

Through which structure must the blood travel in order to leave the right ventricle?

Accepted Answer

Pulmonary valve

Answer

Right atrium

Answer

Tricuspid valve

Answer

Left ventricle

Question 15

Which valves open to allow the ventricles to fill?

Accepted Answer

Tricuspid and mitral

Answer

Aortic and pulmonary

Answer

Tricuspid and pulmonary

Answer

Aortic and mitral

Question 16

Through which vessel does oxygenated blood enter the capillaries?

Accepted Answer

Arterioles

Answer

Aorta

Answer

Arteries

Answer

Venules

Question 17

Which of the following is the correct sequence of blood flow through the peripheral circulation?

Accepted Answer

Arteries-arterioles-capillaries-venules-veins

Answer

Capillaries-arterioles and venules-arteries and veins

Answer

Veins-venules-capillaries-arterioles-arteries

Answer

Arteries-veins-caval veins-capillaries

Question 18

The cardiac cycle’s two phases are

Accepted Answer

Systole and diastole

Answer

Preload and afterload

Answer

Isovolumetric relaxation and contraction

Question 19

The parasympathetic nervous system causes

Accepted Answer

Decreased heart rate

Answer

Increase in blood pressure

Question 20

The EKG is a recording of the

Accepted Answer

Heart’s electrical activity

Answer

Heart’s electrical and mechanical activity

Answer

Heart’s mechanical activity

Question 21

Depolarization is a(n)

Accepted Answer

Electrical event that should result in muscle contraction

Answer

Electrical event that should result in muscle relaxation

Question 22

The P wave represents

Accepted Answer

Atrial depolarization

Answer

Ventricular depolarization

Question 23

The QRS complex represents

Accepted Answer

Ventricular depolarization

Answer

Ventricular repolarization

Question 24

The T wave represents

Accepted Answer

Ventricular repolarization

Answer

Ventricular depolarization

Question 25

The PR segment is located between the

Accepted Answer

P wave and the QRS complex

Answer

QRS complex and the T wave

Question 26

The normal ST segment is

Accepted Answer

At the isoelectric line

Answer

Both above and below the isoelectric line

Question 27

For the purposes of determining the presence of ST segment changes, the baseline is considered to be the

Accepted Answer

PR segment

Answer

QT segment

Question 28

The wave or complex that represents ventricular repolarization is the

Accepted Answer

T wave

Answer

U wave

Question 29

An upward deflection of the QRS complex is called a(n)

Accepted Answer

R wave

Answer

P wave

Question 30

The normal pacemaker of the heart is the

Accepted Answer

SA node

Answer

AV node

Question 31

The normal inherent rate of the SA node as the pacemaker is

Accepted Answer

60-100 bpm

Answer

60-80 bpm

Question 32

The PR interval measures the time it takes for the impulse to travel from the

Accepted Answer

Atria to the ventricles

Answer

SA node to the internodal tracts

Question 33

Which of the following is NOT a bipolar lead?

Accepted Answer

aVF

Answer

Lead I

Question 34

Joining leads I, II and III at their ends produce

Accepted Answer

Einthoven’s triangle

Answer

The precordial leads

Question 35

The precordial leads are located on the

Accepted Answer

Chest

Answer

Arms and legs

Question 36

Lead I connects which limbs?

Accepted Answer

Right arm and left arm

Answer

Right arm and left leg

Question 37

Lead II connects which limbs?

Accepted Answer

Right arm and left leg

Answer

Right arm and left arm

Question 38

Lead III connects which limbs?

Accepted Answer

Left arm and left leg

Answer

Left arm and right leg

Question 39

Bipolar leads

Accepted Answer

Have a positive and negative pole

Answer

Have a positive pole and a central terminal acting as a negative pole

Question 40

V1 through V6 are the

Accepted Answer

Precordial leads

Answer

Augmented leads

Question 41

Einthoven’s law states that

Accepted Answer

Lead I + Lead III = Lead II

Answer

Lead II + Lead III = Lead I

Question 42

Einthoven’s Triangle is formed by joining which leads at their ends?

Accepted Answer

I, II, III

Answer

aVR, aVL, aVF

Question 43

The V1 electrode is located at the

Accepted Answer

Fourth intercostal space, right sternal border

Answer

Fourth intercostal space, left sternal border

Question 44

An impulse that travels away from a positive electrode will write a(n) ____ on the EKG.

Accepted Answer

Negative QRS complex

Answer

Positive QRS complex

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