The Cardiovascular System: The Heart

Auricle

"little ear"

Found in the interventricular septum

AV bundle

The point in the conduction system of the heart where impulse is temporarily delayed

AV node

The inner lining of the heart

Endocardium

Atrium

Entryway

Serous layer covering the heart muscle

Epicardium

Name the two main branches of the left coronary artery

Anterior interventricular artery (left anterior descending artery) Circumflex artery

Prevents backflow into the left ventricle

Aortic valve

Ventr

Belly, lower

Carne

Flesh, meat

Which side of the heart acts as the systemic pump?

Left

"icle"

Little

Trabecula

Little beam

AV valve with flaps

Mitral valve

Prevents backflow into the left atrium

Mitral valve

heart muscle

Myocardium

The outermost layer of the pericardium

Parietal layer

What is the function of the papillary muscles and chordae tendineae?

Prevent the AV valves from flipping inside out or building into the atria when the ventricles contract

Prevents backflow into the right ventricle

Pulmonary valve

Network found in the ventricular myocardium

Purkinje fibers

Which side of the heart acts as the pulmonary pump?

Right

Name the two main branches of the right coronary artery

Right marginal artery Posterior interventricular artery

Pacemaker of the heart

SA Node

Prevents backflow into the right atrium

Tricuspid valve

AV valve with three flaps

Tricuspid valves

Point that represents the "dup" sound made by the heart

Ventricular depolarization