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19 Cards in this Set
- Front
- Back
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How thick is the right ventricle? The left?
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3-4 mm
12mm thickens during contraction |
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inflow tract
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irregular surface due to trabeculae carnae
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moderator band
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extends from anterior papillary muscle to base of IVS
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outflow tract
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smooth
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sections of IVS
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1/3 membranous
2/3 muscular |
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what forms the base of most of the heart?
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left atrium
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what forms the apex of the heart?
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left ventricle
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Which leaflet of the mitral valve is largest?
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anterior
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What semilunar valve is most superior?
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pulmonary
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What gives rise to the left and right coronary arteries?
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ascending aorta
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What does the left coronary artery divide into?
The right? |
circumflex, left anterior descending artery
posterior interventricular branch, marginal branch |
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What does the circumflex artery serve? LAD? PIB? marginal?
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cicumflex serves left half
LAD serves both ventricles PIB serves both ventricle walls marginal serves right ventricle |
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What drains blood from the anterior of the heart? The posterior?
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great cardiac vein
middle cardiac vein |
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What does the umbilical vein become? The umbilican arteries?
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ligamentum teres
medial umbilical ligaments |
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How many impulses per minute for the Sa node?
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70-90
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Which node brings about atrial systole?
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AV node
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Blood vessel hierarchy
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aorta - arteries - medium arteries - small arteries - arterioles - capillaries - venules - veins - vena cava
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What percentage of blood volume loss can the system accommodate with no change to BP
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10%
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Three components of vascular resistance
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length of vessel
size of lumen viscosity of blood - ratio of RBCs to plasma |
