Cardiovascular System Flashcards
Directed toward the left hip and rests on the diaphragm, approximately at the level of the fifth intercostal space (where you put the stethoscope to listen to one’s heartbeat).
Apex
Points toward the right shoulder and lies beneath the second rib. Where the heart attaches to the body, and all great vessels connect.
Base
A double sac of serous membrane.
Pericardium
There are two of these chambers in the heart, they primarily receive blood.
Atria
There are two of these chambers in the heart, they primarily pump out blood. Their walls are the thickest of the heart.
Ventricles
This divides the two atria into two separate chambers.
Interatrial Septum
The upper vein that transports deoxygenated blood to the heart.
Superior Venae Cavae
The lower vein that transports deoxygenated blood to the heart.
Inferior Venae Cavae
One on each side of the heart, take deoxygenated blood to the lungs.
Pulmonary Arteries
There are four of these, they return oxygenated blood back to the hurt.
Pulmonary Veins
Oxygenated blood goes here after it is pumped out of the heart, eventually turns into capillaries.
Aorta
Located between the atrial and ventricular chambers on each side. They prevent backflow into the atria when the ventricles contract.
Atrioventricular Valves
One of the AV valves, consists of two flaps, or cusps.
Bicuspid Valves
One of the AV valves, consists of three flaps, or cusps.
Tricuspid Valves
“Heart Strings”, anchor the cusps to the walls of the ventricles.
Chordae Tendineae
These valves guard the bases of the two large arteries leaving the ventricular chambers.
Semilunar Valves
Branch from the base of the aorta and encircle the heart in the coronary sulcus.
Coronary Arteries
Drain the myocardium, then empty into an enlarged vessel on the backside of the heart called the coronary sinus.
Cardiac Veins
Gets filled by the Cardiac Veins and then empty into the right atrium.
Coronary Sinus
A crescent-shape node of tissue located in the right atrium.
Sinoatrial Node
Part of the intrinsic conduction system. They spread within the muscle of the ventricle walls.
Purkinje Fibers
Another name for the SA node. It starts each heartbeat and sets the pace for the heart.
Pacemaker
Another word for heart contraction.
Systole
Another word for heart relaxation.
Diastole
