physiologyof heart physiology, anatomy, heart, medico.pptx

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1. Physiology of heart By- M.Isakki priya tharshini Bsc.nursing ll nd year Vinayaka mission’s college of nursing Karaikal

2. Basic heart anatomy 1. right atrium 7.superior venacava 2.right ventricle 8.inferior venacava 3.left ventricle 9.coronary sulcus 4.left auricle 10.anterior interventricular groove 5.pulmonary trunk 11.incisura apicis 6.ascending aorta

3. Chambers of heart There are four chambers in our heart. They holds the blood temporarily and transport them throughout the body and to the lungs with the help of blood vessels.

4. Chambers of heart 1.Right atrium: _receives deoxygenated blood from superior and inferior venacava, it passes blood through tricuspid valve to right ventricle. 2.left atrium :_receives oxygenated blood from lungs through, .right and left superior pulmonary vein .right and left inferior pulmonary vein

5. Chambers of heart

6. Valves of heart

7. valves of heart

8. Circulation in heart There are three types of circulation involved in physiology of heart. . Coronary circulation:supplies blood to the muscles of heart by coronary artery and Corona veins . Pulmonary circulation:supplies blood to the lungs. . Systemic circulation:supplies blood to all body tissues and organs. Pulmonary circulation Coronary circulation Systemic circulation

9. Coronary circulation

10. Coronary circulation The supply of oxygenated blood from left ventricle /aorta through Coronary arteries to the tissues and muscles of heart and drainage of deoxygenated blood from myocardium by coronary veins to the right atrium is cakked the Coronary circulation.

11. Pulmonary circulation

12. Systemic circulation

13. Cardiac cycle Cardiac cycle is define as the events occurring between the beginning of one heart beat to the beginning of the next beat. It is the sequence of mechanical events occurring between two successive beats. The overall time taken to complete one cardiac cycle is 0.8 seconds.

14. Conduction system of heart

15. Conduction system of heart

16. Depolarization sequence

17. Depolarization sequence

18. Electrocardiogram trace (ECG)

19. Cardiac output Cardiac output is referred as the volume of Blood pumped From each ventricle per minute.

20. Calculating cardiac output