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MedTerm-Chapter 9
Term | Definition |
---|---|
aort/o | aorta |
arteri/o | artery |
ather/o | fatty (lipid) pastes |
atri/o | atrium |
cardi/o | heart |
coron/o | circle or crown |
pector/o | chest |
phleb/o | vein |
sphygm/o | pulse |
thromb/o | clot |
varic/o | swollen, twisted vein |
vascul/o | vessel |
ventricul/o | ventricle (belly or pouch) |
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 |
pericardial cavity | fluid-filled cavity between the pericardial layers |
heart valves | structures within the heart that open and close with the heartbeat to regulate the one-way flow of blood |
bicuspid valve | heart valve between the left atrium and the left ventricle (cuspis = point); also called the mitral valve |
aortic valve | heart valve between the left ventricle and the aorta |
pulmonary valve | heart valve opening from the right ventricle to the pulmonary artery (luna = moon); also called the pulmonary semilunar valve |
tricuspid valve | valve between the right atrium and the right ventricle |
arteries | vessels that carry blood away 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 |
arrhythmia | any of several kinds of irregularity or loss of rhythm of the heartbeat |