PPT-The Heart Parts and Conduction System

Biology 12 Did you know Your heart beats about 100000 times a day Heart Dissection Can we find Inferior vena cava Superior vena cava Right atria Right ventricle Tricuspid valve Pulmonary artery. Physiology . of the Heart. Mechanism and Events of Contraction. 1) Influx of sodium ions from the extracellular fluid into the cells initiates the action potential by opening voltage-regulated sodium channels . 6-2. Adapted from Psychology by Peter Gray, 1999. Early Greeks were not impressed with the brain. They suggested that the brain’s main function was to cool the blood. They were much more impressed by the heart. They proposed that the heart was the source of feelings and thoughts. Hippocrates, however, observed the effect of head injuries on people’s thoughts and actions and noted, “[F]rom the brain, and from the brain only, arise our pleasures, joys, laughter and jests, as well as our sorrows, pains, grief's and tears. Through it, in particular, we think, see, hear….Eyes, ears, tongue, hands and feet act in accordance with the discernment [judgment] of the brain.. Systems. Vocabulary. Systems. Cell – The smallest living thing that can preform life functions. Tissue – group of similar cells working together for one function. Organ – A group of tissues working together. Dr. . Mahvash. Khan. MBBS, . MPhiL. Assistant Professor Physiology. Rawal. Institute of Health Sciences. The heart has a special system for. generating rhythmical electrical impulses to cause rhythmical contraction of the heart muscle.. Primary Teaching . 2015 viva – Draw and label the membrane potential of normal pacemaker tissue.. 2015 viva – What mechanisms can . tachyarrythmias. be generated?. Physiology. Cardiac action potential . Lecture 11.0 – Cardiovascular System Genalin Lagman Taguiam Lecturer Course Outcomes On completion of the week’s activity, the students should be able to identify the structures in a given diagram of the heart; 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. Atrium. : Also known as Auricles. the smaller superior chambers of the heart where blood collects either from the body or the lungs..  . Ventricle. : these are the larger chambers that collect the blood from the atriums.. The Cardiac Conduction System is a group of specialised cells located in the wall of the heart which send electoral impulses to the cardiac muscle, causing it to contract. What happens as the heart beats?. REGULATION MEANS. Intrinsic cardiac regulation of pumping in response to changes in volume of blood flowing into the heart.. Autonomic nervous System by controlling heart rate and strength of heart pumping.. ECG. The Basics And Beyond. I have no conflicts of interest. . Pearls. Treat the patient not the paper.. Electrical activity triggers mechanical activity. No electrical activity = no mechanical activity. The cardiac cycle and coronary flow. Conduction System. https://. www.youtube.com/watch?v=A2YoGyNhAns. Coronary flow. https://. www.youtube.com/watch?v=tBQa8IBzP6I. Summary. The conduction system of the heart is composed . Transition 2020. 23/6/2020. The Conduction System of the heart.. The Conduction system . We are going to learn the step by step process of how a single heart beat occurs.. Leaning Outcomes. Students will. 2 3 septum (Fig. and Supplementary Figs and ). ese regions, previously described as paranodal, could also be dierentiated from the working myocardium in the micro-CT data, appearing as lower atten