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030

Cardiovascular System -Q – Anatomic Terms & A – Meaning

QuestionAnswer
atrium upper right or left chamber of the heart
endocardium membrane lining the cavities of the heart
epicardium membrane forming the outer layer of the heart
interatrial septum partition between the right and left atria
interventricular septum partition between the right and left ventricles
myocardium heart muscle
pericardium protective sac enclosing the heart composed of two layers with fluid between
visceral pericardium layer closest to the heart (visceral = pertaining to organ)
parietal pericardium outer layer (parietal = pertaining to wall)
pericardial cavity fluid-filled cavity between the pericardial layers
ventricle lower right or left chamber of the heart
heart valves structures within the heart that open and close with the heartbeat to regulate the one-way flow of blood
aortic valve heart valve between the left ventricle and the aorta
mitral valve heart valve between the left atrium and the left ventricle (cuspis = point)
pulmonary semilunar valve heart valve opening from the right ventricle to the pulmonary artery (luna = moon)
tricuspid valve valve between the right atrium and the right ventricle
valves of the veins valves located at intervals within the lining of veins, especially in the legs, which constrict with muscle action to move the blood returning to the heart
arteries vessels that carry blood from the heart to the arterioles
aorta large artery that is the main trunk of the arterial system branching from the left ventricle
arterioles small vessels that receive blood from the arteries
capillaries tiny vessels that join arterioles and venules
venules small vessels that gather blood from the capillaries into the veins
veins vessels that carry blood to the heart from the venules
systemic circulation circulation of blood throughout the body via arteries, arterioles, capillaries, venules, and veins to deliver oxygen and nutrients to body tissues
coronary circulation circulation of blood through the coronary blood vessels to deliver oxygen and nutrients to the heart muscle tissue (see Fig. 5-2)
pulmonary circulation 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
Created by: MT student1