lab_5 - Lab 5: Electrical and Mechanical Properties of the...

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Lab 5: Electrical and Mechanical Properties of the Heart Heart : primary pump of the cardiovascular system Creates a pressure gradient on the arterial side that allows blood flow to tissues In humans, dual pump systemic blood movement through the left side Pulmonary blood movement through the right side Move same amount of blood pressure generated is different Amphibian heart is different: Sinus venosus (equivalent of large veins in human beings that drain into right atrium) Right and left atrium Single ventricle – no internal subdivision Oxygenated and Deoxygenated Blood separate by spongy trabeculae One Stream fills channels formed by trabeculae and the other occupies the center Conus Arteriosus (equivalent of the aorta) spiral valve (further separates oxygenated and deoxygenated blood). Valve made up of endocardial folds that twist with each other to form two channels. This allows for targeted blood flow to either systemic or pulmonary circulations. Excitation Contraction Coupling in Frog Heart:
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This note was uploaded on 06/07/2009 for the course NPB 101L taught by Professor Goldberg during the Spring '08 term at UC Davis.

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lab_5 - Lab 5: Electrical and Mechanical Properties of the...

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