Chapter 18 Part A Flashcards

Flashcards about the Cardiovascular System: The Heart.

Pericardium

A double-walled sac around the heart.

Fibrous Pericardium

The superficial layer of the pericardium.

Serous Pericardium

The deep two-layered layer of the pericardium

Epicardium

Visceral layer of the serous pericardium

Myocardium

Cardiac muscle layer forming the bulk of the heart

Endocardium

Endothelial layer of the inner myocardial surface

Atria

Receiving chambers of the heart

Ventricles

Discharging chambers of the heart

Heart Valves

Ensures unidirectional blood flow through the heart

Atrioventricular (AV) Valves

Lies between the atria and the ventricles

Aortic Semilunar Valve

Lies between the left ventricle and the aorta

Pulmonary Semilunar Valve

Lies between the right ventricle and the pulmonary trunk