THE HEART
VOCABULARY
WAVE FORM
CARDIAC CYCLE
VOCABULARY
100

What are the four chambers of the heart?

right atrium, left atrium, right ventricle, and left ventricle.

100

define pericardium.

the sac that protects the heart

100

first component of wave form

p-wave

100

the period when neither the ventricles or atria are contracting.

diastole

100

ekg machine with 24 hour reading.

holter monitor

200

where is the heart located

2nd and 5th intercostal space.

200

define arrhythmia.

irregular heartbeat

200

follows the P wave and represents depolarization of the ventricles.

QRS

200

the amount of blood pumped out of a ventricle after one contraction

stroke volume

200

episode in which the hearts blood supply is cut off or restricted .

Myocardial Infarction

300

what are the five parts of the electrical sysem?

sinoatrial node, atrioventricular node, bundle of his, bundle branches, and purkinji fibers 

300

define artifact

tracings not made by the hearts electrical current.

300

Represents ventricular recovery or repolarization. 

T-wave

300

the period of the cardiac cycle when both the atria and ventricles are contracting.

systole

300

define anoxia.

absence of oxygen

400

define septum.

partition that separate the chambers of the heart. 

400

what is a slow heart rate.

bradycardia

400

represents the end of ventricular conduction and the beginning of recovery; a change may indicate MI

ST-segment

400

the amount of pressure the LV must work against to pump blood into circulation

afterload

400

fainting, or temporary loss of consciousness. 

syncopy

500

what are the four properties of cardiac cells?

automaticity, contractibility, conductivity, excitability.

500

small sensors placed on the skin to receive electrical activity from the heart.

electrodes

500

tracks the atrial impulse from the SA node through the AV node, bundle of His, and bundle branches

PR interval 

500

the amount of blood the heart pumps in one minute

cardiac output

500

what is the large vein that carries the deoxygenated blood from the lower and middle body into the right atrium of the heart.

inferior vena cava 

M
e
n
u