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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 |