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Heart
blood flow, internal structures, clinical aspects, and coronary circulation
20
Anatomy
Undergraduate 1
04/24/2011

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Cards

Term
Left Atrium
Definition
chamber on the left side of the heart. Derived from two structures. The posterior half (inflow) receives the four pulmonary veins. The anterior half is continuous with the left auricle. When pumping fills ventricle 30% full of blood
Term
Left Ventricle
Definition
lies anterior to the left atrium. Contracts forcing the blood to go to aorta
Term
Right Atrium
Definition
right border of the heart. Blood drains from three vessels: the superior and inferior venae cavae and the coronary sinus (returns blood from walls of the heart)
Term
Right Ventricle
Definition
Forms the most of anterior surface of heart and part of diaphramic surface. Blood moves horizontal and forward.
Term
Pulmonaire Viens
Definition
Carries oxygenated blood from the lungs to the heart
Term
Mitral Valve
(Left Atrioventricular Valve)
Definition
Referred to as the Bicuspid valve. Closing of the left ventricular orifice to the left ventricle
Term
Aorta
Definition
largest artery in the body
Term
Aortic Semilunar Valve
Definition
It is orientated to prevent the flow of the blood out of the ventricle but snaps shut at back flow
Term
Systemic Circulation
Definition
The pathway of blood to the body regions and organs; brings oxygenated blood the the head, neck and organs in the body. Gives oxygen to tissue and receives carbonation.
Term
Superior Vena Cava
Definition
Drains blood from the upper body into the right atrium.
Term
Inferior Vena Cava
Definition
Drains blood from the lower body to the right atrium
Term
Tricuspid Valve
(Right Atrioventricular Valve)
Definition
Contraction closes the right atrioventricular orifice
Term
Pulmonary Semilunar Valve
Definition
Closes the opening into the pulmonary trunk from the right ventrical
Term
Pulmonary Trunk
Definition
branches into two arteries (left and right) which go to corresponding lungs.
Term
Atrial Contraction
Definition
contraction of the atrial muscle; plays a part in ventricular filling and opening and closing of the A-V valves.
Term
Ventricular Contraction
Definition
Contaction of the left and right ventricles, forcing blood in to the aorta and pulmonary artery
Term
Sinoatrial Node
(SA Node)
(Pacemaker)
Definition
impulse-generating tissue in the right atrium
Term
Atrioventricular Node
Definition
The AV node is an area of specialized tissue between the atria and the ventricles of the heartelectrical control system of the heart that co-ordinates heart rate and electrically controls atrial and ventricle chambers
Term
Purkinje Fibers
Definition
ocated in the inner ventricular walls of the heart; pecialized myocardial fibers that conduct an electrical stimulus or impulse that enables the heart to contract in a coordinated fashion.
Term
Coronary Circulation
Definition
circulation of blood in the blood vessels of the heart muscle; The vessels that deliver oxygen-rich blood to the myocardium are known as coronary arteries. The vessels that remove the deoxygenated blood from the heart muscle are known as cardiac veins.
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