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17 Cards in this Set
- Front
- Back
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functions of cardiovascular system |
rapid transport signalling temperature regulation mediates inflammatory and host responses |
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6 mechanisms for cardiovasucalr dysfunction |
cardiac conduction - arrhythmias failure of pump obstruction of flow regurgitant flow shunted flow rupture of the heart or major vessel |
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right vs left ventricle |
left: systemic circulation, high pressure, high O2 saturation right: pulmonary circulation, low pressure, low O2 saturation "make a chart over the weekend" |
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right atrium blood pressure |
0-8 mmHg |
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Right ventricle blood pressure |
15-30 systolic 0-5 diastolic |
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Left ventricle blood pressure |
90-140 systolic 4-12 diastolic |
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left atrium blood pressure |
4-12 |
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aorta blood pressure |
systemic 90-140 systolic 60-90 diastolic |
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pulmonary artery blood pressure |
pulmonary circulation 15-30 systolic 5-15 diastolic |
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edwards swan-ganz catheter |
to measure pulmonary circulation pressure all the way to the left atrium insert balloon catheter into pulm artery and measure wedge pressure |
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cardiac output vs venous return |
they must balance to 5L/min or else problems |
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left heart failure |
decreased left heart cardiac output left ventricle is not emptying properly pressure increases in left atrium @>20 pulmonary edema b/c of increase in hydrostatic pressure cor pulmonae (enlargement of right heart) |
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right heart failure |
decreased right heart cardiac output leads to decreased lung and left heart blood supply ... decreased blood supply to body increased venous pressure -> fluid accumulation in liver, peritoneal cavity (ascites) and feet (pedal) right ventricular dialation/hypertrophy |
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nucleus tractus solitarii function |
sends parasympathetic interneurons through vagus to SA and AV node to slow down heart
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sympathetic innervation of heart |
innervates heart, blood vessels and adrenal medulla to increase hearth rate |
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purpose of parallel cardiac circulation |
blood flow to one system is not dependent on another can modify blood flow to an individual system |
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parasympathetic innervation of heart |
nucleus ambiguus - major output dorsal motor nucleus - minor output nucleus tractus solitarus - input, baroreflex |
