Heart

Paired, inferiorly located heart chambers that function as the major blood pumps

Severe, suffocating chest pain caused by temporary lack of oxygend supply to heart musce

Major systemic artery; arises from the left ventricle of the heart

Vessel that carries blood away from teh heart

Paired, superiorly located heart chambers that receive blood returning to the heart

Bundle of cardiac muscle cells that conducts impulses from the AV node to the walls of the right and left ventricles; located in the septum (wall) between the two ventricles of the heart; also called the bundle of His

Specialized mass of conducting cells located interatial septum of the heart

Forced exerted by blood against a unit of area of the blood vessel walls; difference in blood pressure between different areas of the circulation provide the driving force for blood circulation

Muscle tissue of the heart wall

Period during which the ventricles or atria of the heart relax

Inflammation of the inner lining of the heart

The layer that lines the inner surface of the heart wall; consists of endothelium and areolar connective tissue

Abnormal heart sound (ususally resulting from valve problems)

Complex junctions that interconnect muscle cells in the wall of the heart

The valve on the left side of the heart between the left atrium and left ventricle. Also called the bicuspid valve

Condition characterized by dead tissue areas in the myocardium of the heart; caused by interrupiton of blood supply to the area; also called heart attach.

Layer of the heart wall composed of cardiac muscle

Space between the parietal and visceral layers of the pericardium. Contains a small amout of serous fluid

Double-layered sac that encloses the heart and form its superficial layer

System of blood vessels that serve gas exchanged in the lungs: the pulmonary ateries, capillaries, and veins

Long rows of modified cardiac muscle cells of the conduction system of the heart; also called subendocardial branches

Valves at the base fo the aorta and the pulmonary trunk that prevent blood from returning to the heart ventricles after ventricular contraction

A collection of specialized cardiac muslce cells in the superior wall of the right atrium; pacemaker of the heart

Dilated channel for the passage of blood or lymph

System of blood vessels that carries oxygenated blood to the tissues throughout the body

Peroid during which the ventricles or the atria of the heart contract

Paired, inferior located heart chambers that function as the major blood pumps