Ekg Technician Chapter 1

Front 1

What is the function of the heart?

Back 1

to pump enough blood to meet the body's metabolic needs

Front 2

Where is the heart located?

Back 2

Between the lungs, above the diaphragm, behind the sternum and in front of the spine. In the mediastinum cavity.

Front 3

What are the 3 layers of the heart?

Back 3

Epicardium - outer layer
Myocardium - middle layer
Endocardium - inner layer

Front 4

Name the 4 chambers of the heart

Back 4

Right Atrium
Left Atrium
Right Ventrical
Left Ventrical

Front 5

What is the pericardium?

Back 5

a double walled sac that encloses the heart

Front 6

What is the septum?

Back 6

a muscular band of tissue that divides the heart into right and left sides

Front 7

Where is the pulmonic valve located?

Back 7

between right ventricle and the pulmonary artery

Front 8

Where is the Aortic valve located?

Back 8

between the left ventrical and the aorta

Front 9

Where is the tricuspid valve located?

Back 9

between the right atrium and ventricle
(has 3 cusps)

Front 10

Where is the mitral valve located?

Back 10

between the left atrium and ventricle
(has 2 cusps)

Front 11

What are the 2 semilunar valves?

Back 11

Pulmonic and Aortic

Front 12

What are the 2 Atrioventricular (AV) valves?

Back 12

Tricuspid and Mitral

Front 13

What does pericardial fluid do?

Back 13

minimizes friction between the layers of the pericardium

Front 14

What does the right atrium do?

Back 14

collects deoxygenated blood from the body

Front 15

What does the right ventricle do?

Back 15

pumps deoxygenated blood to the lungs for a fresh supply of oxygen

Front 16

What does the left atrium do?

Back 16

collects oxygenated blood from the lungs

Front 17

What does the left ventricle do?

Back 17

pumps oxygenated blood out to the entire body

Front 18

What is the purpose of the heart valve?

Back 18

to prevent backflow of blood

Front 19

The cardiovascular system is composed of what?

Back 19

the heart and blood vessels

Front 20

Name the four heart valves

Back 20

Pulmonic
Aortic
Tricuspid
Mitral

Front 21

Name the five great vessels of the heart

Back 21

Superior Vena Cava
Inferior Vena Cava
Pulmonary Artery
Pulmonary Vein
Aorta

Front 22

List the phases of diastole

Back 22

rapid filling phase
diastasis
atrial kick

Front 23

What is the effect of Diastole on the EKG?

Back 23

P wave

Front 24

List the phases of systole

Back 24

Isovolumetric contraction
Ventricular ejection
protodiastole
isovolumetric relaxation

Front 25

What is the effects of systole on the ekg?

Back 25

QRS Complex

Front 26

The atrial kick is represented on th EKG as a __________.

Back 26

P wave

Front 27

Once the atria have delivered blood to the ventricles, the ventricles depolarize and a _____________ is written on the EKG.

Back 27

QRS complex

Front 28

Name the 3 coronary arteries

Back 28

Left anterior descending (LAD)
Circumflex
Right coronary artery

Front 29

The two atria are divided by what?

Back 29

interatrial septum

Front 30

The two ventricles are divided by what?

Back 30

interventricular septum

Front 31

What is diastole?

Back 31

the period of relaxation and filling of the ventricles

Front 32

What is systole?

Back 32

the period during which the ventricles contract and empty blood

Front 33

What is the only artery that carries deoxygenated blood?

Back 33

pulmonary artery - carries deoxygenated blood from the heart to the lungs

Front 34

What is the only vein that carries oxygenated blood?

Back 34

pulmonary vein - returns oxygenated blood to the heart from the lungs