pointed portion of the heart, is directed towards the left lip and rest at about the fifth intercostal space.

broad aspect of the heart, points towards the right shoulder and lies beneath the second rib

The double-walled sac that encloses the heart

The superficial loosely fitted part of the double-walled sac that encloses the heart

Deep to the fibrous pericardium is the slippery, two-layer

Lines the interior of the superficial loosely fitted part of the pericardium

What is inflammation of the pericardium, often resulting in a decrease in the serous fluid?

Consists of thick bundles of the cardiac muscle twisted into ringlike arrangements.

Thin, glistening sheet of endothelium that lines the heart chambers.

septum that divides the atria longitudinally

septum that divides the ventricles longitudinally

carries blood to the lungs for gas exchange and then returns it to the heart

Portion of the heart that pumps blood out of the heart into arteries to the body tissues.

supplies oxygen and nutrient-rich blood to all body organs

Crushing chest pain caused by the heart beating rapidly, depriving the myocardium of blood.

a "heart attack"

a crescent shaped node in the right atrium

node at the junction of the atria and ventricles

spread with the muscle of the ventricle walls, causing a "wringing" contraction of the ventricles that begins at the apex and moves toward the atria.

a rapid heart rate

a slow heart rate

rapid, uncoordinated shuddering of the heart muscle

a group of conditions in which the heart's rhythm is abnormal

Heart contraction

Heart relaxation

the events of one complete heartbeat, during which both atria and ventricles contract and then relax

the amount of blood bumped out by each side of the heart in one minute

the closed transport system made up by blood vessels