PPT-Cardiac Contraction and Relaxation

DrDivya E M Introduction The heart is actually two separate pumps right heart that pumps blood through the lungs left heart that pumps blood through the peripheral organs . Cycle: . diastole Phase. A heartbeat is a two-part pumping action that takes about a second. . This part of the two-part pumping phase (the longer of the two) is called . diastole. .. Diastole. begins as the ventricles start to relax. Soon the pressures within the aorta and pulmonary artery exceed ventricular pressures, causing the . ANSC 3404. Objectives. : Study the structures of muscle and the mechanism of muscle contraction.. . SKELETAL. . SMOOTH. . CARDIAC. METHOD OF CONTROL VOLUNTARY INVOLUNTARY . INVOLUNTARY. BANDING PATTERN STRIATED NON-STRIATED STRIATED. January8, 2008;March11, 2008. HellenicJ Cardiol 2009; 50: 60-65 Review ArticleReview Article The Tei index appears to have close correlation withtion in the assessment of overall cardiac perform-The January8, 2008;March11, 2008. HellenicJ Cardiol 2009; 50: 60-65 Review ArticleReview Article The Tei index appears to have close correlation withtion in the assessment of overall cardiac perform-The Pamela BL. Introduction . The cardiac muscle forms the muscular wall of the heart that is it forms the myocardium.. Some of the cardiac muscle is also present in the walls of the aorta, pulmonary vein and superior vena cava.. Skeletal & Cardiac excitation . & contraction. Mike Clark, M.D.. NOTE. Prior to reading this PowerPoint presentation – students may want to review my PowerPoint presentation . General Electrophysiology . Circuits of the Blood. There are 3 circuits:. Systemic Circulation. From the left ventricle to the aorta and on to the body. Back to the heart via the superior and inferior vena cava to the right atrium. Cardiovascular system model (CVS). Active . contraction. R. mt. R. av. R. tc. R. pv. R. sys. R. pul. Hemodynamics. Flow through the vessels. Volume variation . Cardiac valves. (mitral, tricuspid, aortic and pulmonary). Heart Wall. Three layers. Epicardium. Outside layer. AKA visceral pericardium. Pericardium. Visceral pericardium or epicardium. Next to heart. Actually part of heart wall. Parietal pericardium. Outside layer. Why do you think that ventricle’s walls are thicker. ?. What makes a heart beat?. Today’s Agenda. Science Starter. Beating Heart. Heart Conduction System. ECG & Arrhythmia. Exit Quiz. https. ://youtu.be/NEuSCPifKhA. matt.velkey@duke.edu. 452A Davison, Duke South. Muscle Tissue. I. Striated Muscle - regularly arranged contractile units. A. Skeletal Muscle - long, cylindrical multinucleated cells with peripherally placed nuclei. Contraction is typically quick and vigorous and under voluntary control. Used for locomotion, mastication, and phonation.. FARADIC. . CURRENT. Introduction-. Low frequency current. Short duration interrupted direct current. Pulse duration-0.1 to 1ms. FREQUENCY-50-100 pulse per sec. History-. MICHAEL FARADAY (1791-1867),he discovered the principle of induction in 1831 and electric currents produced by these coils were called FARADIC CURRENT to honor him.. Dr. . Shaimaa. . Munther. Objectives:. Define . contractility, . inotropism. , preload, and afterload. . Define . heart rate and Stroke . volume.. Summarize . the factors that regulate heart rate and Stroke . . III. Relaxation. . techniques. Relaxation. . techniques. Relaxation techniques can reduce stress symptoms and help you enjoy a better quality of life, especially if you have an illness. . Relaxation techniques are a great way to help with...