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CSU BMS 300 - Starling's Law to the Coronary Circulation

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BMS 300 1st Edition Lecture 29 Outline of Last Lecture I. Endocardium, myocardium, pericardium -myocardium-generates propulsive force on blood in the chambersII. Diastole filling phase III. Systole myocardial contraction and ejection IV. The cardiac cycle and the pressure volume curve-diastole1. end diastolic volume -systole 1. isovolumetric contraction 2. ejection -isovolumetric relaxation V. Valves of the heart and cardiac cycle -what opens and closes valves -which valves open and close and when VI. Stroke volume -end diastolic volume-end systolic volumeVII. Cardiac output-S.V. x cycles/min These notes represent a detailed interpretation of the professor’s lecture. GradeBuddy is best used as a supplement to your own notes, not as a substitute.VIII. Starling’s law of the heart Outline of Current Lecture IX. Coronary vasculature and cardio myocytes -coronary arteries -capillaries -cardial sinus-right atrium X. Source of cardial circulation -coronary arteries at the base of aorta -source of pressure 1. Aortic pressure during diastole 2. why not systoleXI. Cardiomyoctes -generic cardiomyocte 1. uninucleate2.intercalated disks >desemosomes>gap juntions -types 1. contractile 2. conductile XII. Contractile Structure-sarcomeres -EC couplings Current LectureRecap last lecture: -what we see on the right side we also see on the left -the resistance of flow from the left is lower then the right -we have a continuous layer of endothelium everywhere in the chambers -mesothelial cells are a kind of epithelium in the cavity that provide a kind of sack which are attached by a basal lamina -there are openings to the coronary arteries-there is an interface between the myocardium OHM’s law ΔV=R x current ΔP= resistance x flow Vessels that supply oxygenated blood to the myocardium-pair at coronary arteries -capillaries (exchange vessels) -cardiac sinus  venous return-right atrium Myocardium -cells of myocardium >contractile cardio myocytes


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CSU BMS 300 - Starling's Law to the Coronary Circulation

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