chapter 5 him #1-30
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Created by:
jenaelizabeth13 on February 24, 2012
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30 terms
Terms | Definitions |
|---|---|
 aorta | largest artery in the body. it carries oxygenated blood from the left ventricle to the body. it includes the ascending aorta, the aortic arch, the thoracic aorta, and the abdominal aorta |
| aortic valve | heart valve between the left ventricle and the aorta |
| arteriole | smallest branch of an artery |
| artery | blood vessel that carries oxygenated blood away from the heart to the body. the bright red blood has a high level of oxygen |
| atrioventricular (AV) node | small area of tissue between the right atrium and right ventricle. the AV node is part of the conduction system of the heart and receives electrical impulses from the SA node |
| atrium | each of the two upper chambers of the heart |
| bundle of his | part of the conduction system of the heart after the AV node. it splits into the right and left bundle branches |
| cardiovascular system | body system that includes the heart and the blood vessels |
| diastole | resting period between contractions |
| mitral valve | heart valve between the left atrium and the left ventricle. it is also known as the bicuspid valve. it has two pointed leaflets or cusps |
| bicuspid valve | two cusps |
| normal sinus rhythm | ... |
| pulmonary artery | originate from the pulmonary trunk, which comes from the right ventricle of the heart, not from the aorta |
| pulmonary valve | heart valve between the right ventricle and the pulmonary trunk and the pulmonary arteries |
| pulmonary vein | carry blood from the lungs to the left artium of the heart |
| purkinje fibers | network of nervous |
| septum | a central wall, divides the heart into right and left sides |
| sinoatrial node | pacemaker of the heart, initiates the electrical impulse that begins each heartbeat |
| systole | contraction of the atria or the ventricles |
| tricuspid valve | heart valve between the right atrium and right ventricle. it has 3 pointed leaflets or cusps |
| vasoconstriction | constriction of smooth muscle in the wall of a blood vessel that causes it to become smaller in diameter |
| vein | blood vessel that carries blood from the body back to the body. this blood has a low level of oxygen and a high level of carbon dioxide and waste |
| vasodilation | relaxation of smooth muscle in the wall of a blood vessel that causes it to become larger in diameter |
| ven/o | vein |
| vena cava | largest veins in the body |
| superior vena cava | superior carries blood from the head, neck, arms, and chest back to the right atrium of the heart |
| inferior vena cava | inferior carries blood from the abdomen, pelvis, and legs back to the right atrium |
| venule | smallest branch of vein |
| valve | structure that opens and closes to control the flow of blood. heart valves include the tricuspid valve, pulmonary valve, mitral valve, and aortic valve |
| ventricle | each of the two large, lower chambers of the heart |
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