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Cardiac Anatomy and Physiology / Mrs. Nuyianes

AV Node

special conductive tissue located in the lower right atrium

Pulmonary Artery

carries deoxygenated blood from the right side of the heart to the lungs

Bundle Branches

special conductive tissue that extends into the right and left ventricle

Aorta

receives blood from the left side of the heart to be distributed to the rest of the body

SA Node

natural pacemaker of the heart

Ventricles

lower chambers or main pumping chambers

Pulmonary

relating to the lungs

Bundle of His

conductive tissue leading from the AV node to the ventricular septum (between the right and left ventricle)

Vena Cava

large vein returning deoxygenated blood to the right side of the heart

Diastole

the resting phase of the heart

Purkinje Fibers

conductive tissue that transmits electrical impulses from the bundle branches to the ventricle tissue

Vascular

relating to the system of blood vessles

Pulmonary Vein

carries oxygenated blood from the lungs to the left side of the heart

Atrium

the upper chambers

Systole

the time during which the heart is contracting or working

Cardiac Cycle

the series of electrical or mechanical events that comprise each heart beat

Ion

very small charged particles

Automacticity

the heart generates its own electrical impulse spontaneously

Heart Rhythm

the flow of blood through the heart structures and the synchronized and coordinated function of the heart during one heartbeat

one direction, backwards

The significance of the heart valves is that they ensure that blood will flow in ___ ______ and prevents blood from flowing _______ into the previous chamber or vessel.

protective sac

The ________ ___ is a protective covering around the heart.

rib cage

The ___ ____ is a bony structure that protects the heart, lungs, and large vessels.

left ventricle

The ____ ________ has a thick muscle and large chamber because it has to pump more blood farther than any of the other heart chambers.

Electrocardiogram Technician

_________ ________ must understand the anatomy and physiology of the heart in order to successfully perform their job.

pericardium, myocardium, endocardium

The ____ covers the heart. The heart muscle is the ____ and the lining of the heart is the ____.

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