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Circulatory System
Anatomical Terms
26
Health Care
Not Applicable
04/01/2009

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Cards

Term
atrium
Definition
upper right and left chambers of the heart
Term
endocardium
Definition
membrane lining the cavities of the heart
Term
epicardium
Definition
membrane forming the outer layer of the heart
Term
interatrial septum
Definition
partition between right and left atrium
Term
interventricular septum
Definition
partition between right and left ventricle
Term
myocardium
Definition
heart muscle
Term
pericardium
Definition
protective sac enclosing the heart composed of two layers with fluid in between
Term
parietal pericardium
Definition
outer layer (parietal = pertaining to wall)
Term
pericardial cavity
Definition
fluid-filled cavity between the pericardial layers
Term
visceral pericardium
Definition
layer closest to the heart (visceral = pertaining to organ)
Term
ventricle
Definition
lower right and left chambers of the heart
Term
heart valves
Definition
structures within the heart that open and close with the heartbeat to regulate the one-way flow of blood
Term
aortic valve
Definition
heart valve between the left ventricle and the aorta
Term
mitral or bicuspid valve
Definition
heart valve between the left atrium and left ventricle (cuspis = point)
Term
pulmonary semilunar valve
Definition
heart valve opening from the right ventricle to the pulmonary artery (luna=moon)
Term
tricuspid valve
Definition
valve between the right atrium and the right ventricle
Term
valves of the veins
Definition
valves located at intervals within the lining of veins especially int he legs - which constrict with muscle action to move the blood returning to the heart
Term
arteries
Definition
vessels that carry blood from the heart to the arterioles (arteries = away)
Term
aorta
Definition
large artery that is the main trunk of the arterial system branching from the left ventricle
Term
arterioles
Definition
small vessels that receive blood from the arteries
Term
capillaries
Definition
tiny vessels that join arterioles and venules
Term
venules
Definition
small vessels that gather blood from the capillaries into the veins
Term
veins
Definition
vessels that carry blood to the heart from the venules
Term
systemic circulation
Definition
circulation of blood throughout the body through arteries, arterioles, capillaries, and veins to deliver oxygen and nutrients to body tissues
Term
coronary circulation
Definition
circulation of blood through the coronary blood vessels to deliver oxygen and nutrients to the heart muscle tissue
Term
pulmonary circulation
Definition
circulation of blood from the pulmonary artery through the vessels in the lungs and back to the heart via the pulmonary vein, providing for the exchange of gases
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