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Brain

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Brain

  1. 1. WELCOME by N.ANBAZHAGAN, SECONDIGRADE TEACHER, PANCHAYAT UNION MIDDLE SCHOOL, VISOOR,UTHIRAMERUR UNION, KANCHEEPURAM DISTRICT, TAMIL NADU.
  2. 2. Standard : 8 Science
  3. 3. OBJECTIVESABOUT THE HEARTSPECIMEN OF THE HEARTHEART CHAMPERSLOCATION OF THE HEARTPARTS OF THE HEARTHEART FUNCTIONINGBLOOD CIRCULATIONTHE LIVING PUMPHEART BEATSPREVENTION OF HEART DISEASELAYERS OF THE HEARTMore detailsEvaluation
  4. 4. The human heart is a conical muscular organ situated in the middle mediastinum in between the two lungs. The base of the heart lies upwards while the apex lies downwards and titled towards the left. The heart is covered by a double walled membranous sac known as the PERICARDIUM. Pericardial fluid, present inside the membrane, protects the heart from shock and lubricates its movements. Heart is very important organ of human body. It is made of muscle and has four chambers, Two in each side. Upper chambers are atriums. Lower chambers are ventricles.HOME
  5. 5. SPECIMEN OF THE HEARTHOME
  6. 6. HEART CHAMPERS LOWER UPPER CHAMBERS CHAMBERS Left atria. Left ventricle. Right atria. Right ventricle. It has smaller It has larger and and less more muscular. muscular. Left atrium Right atrium Left ventricle Right ventricleHOME
  7. 7. LOCATION OF THE LOCATION OF THE HEART HEART The human heart is a conical muscular organ situated in the middle mediastinum in between the two lungs. HEART PUMPS BLOOD TOHOME WHOLE BODY
  8. 8. PART OF S the H ART EHOME
  9. 9. THE WORK OF THE HEART Circulating blood. The steady pumping of the heart supports life by moving blood through the body. As it flows, blood delivers food and oxygen to all the bodys cells and carries away wastes. Blood returns to the heart carrying a waste gas called carbon dioxide that cells produce as they use oxygen to obtain energy from food.HOME
  10. 10. BLOOD CIRCULATIONHOME
  11. 11. THE LIVING PUMPHOME
  12. 12. HEART BEATS Regulating the heart rate. The hearts cycle of activity has two stages, systole and diastole. Systole (pronounced SIHS tuh lee) occurs when the ventricles contract. Diastole (pronounced dy AS tuh lee) is the stage when the ventricles relax and the atria contract. One complete cycle of contraction and relaxation--called a cardiac cycle--makes up one heartbeat. Cardiac output = stroke volume x heart rate (number of ventricular contractions/min) = 70 ml/stroke x 72 strokes/min = 5040 ml/min (5.04 litres/min)HOME
  13. 13. Avoid Alcohol. Reduce Over Weight. Regular Exercise. Less Tensions And EmotionsHOME
  14. 14. LAYERS OF THE HEARTHOME
  15. 15. EVALUATION 1.Write the parts of the heart?HOME
  16. 16. 2.Draw the structure of the heart?HOME
  17. 17. More details Heart diagram Specimen of the heart Valves CoronaryHOME
  18. 18. HOME
  19. 19. HOME
  20. 20. HOME
  21. 21. Mitral valveHOME
  22. 22. Beaf heartHOME
  23. 23. HOME
  24. 24. HOME
  25. 25. HOME
  26. 26. HOME
  27. 27. Coronary circulationHOME
  28. 28. HOME
  29. 29. Surface heart coronaryHOME

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