summary of transportation in human beings of class 10 of ch life process
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TRANSPORTATION IN HUMAN BEINGS CONSISTS OF A PUMPING ORGAN HEART, BLOOD VESSELS AND LYMPH
HEART IS THE PUMPING ORGAN OF HUMAN BEINGS.
HEART HAS 4 CHAMBERS RIGHT ATRIUM, LEFT ATRIUM, RIGHT VENTRICLE AND LEFT VENTRICLE.
THE IMPURE BLOOD (CONSISTS OF CARBON DIOXIDE ) CAME THROUGH ALL PARTS OF THE BODY TO THE RIGHT ATRIUM THROUGH SUPERIOR VENACAVA AND INFERIOR VENACAVA. THE RIGHT ATRIUM CONTRACTS AND PUSHES THE IMPURE BLOOD TO RIGHT VENTRICLE. BETWEEN THE RIGHT ATRIUM AND RIGHT VENTRICLE THERE IS A VALVE CALLED TRICUSPID VALVE THE RIGHT VENTRICLE CONTRACTS AND MOVES UPWARDS TO THE LUNGS BY PULMONARY ARTERIES. BETWEEN THE RIGHT VENTRICLE AND PULMONARY ARTERY THERE IS A VALVE CALLED SEMI LUNAR PULMONARY VALVE. IN THE LUNGS THE BLOOD IS PURIFIED TO PURE BLOOD (CONTAINING OXYGEN). FROM THE LUNGS THE PURE BLOOD IS BROUGHT TO THE LEFT ATRIUM THROUGH PULMONARY VEINS. THE LEFT ATRIUM CONTRACTS AND PUSHES THE BLOOD DOWNWARDS TO THE LEFT VENTRICLE THROUGH A BICUSPID VALVE. FROM THE LEFT VENTRICLE THE BLOOD IS MOVED TO ALL PARTS OF THE BODY THROUGH AORTA. BETWEEN THE LEFT VENTRICLE AND THE AORTA THERE IS A VALVE CALLED SEMILUNAR AORTIC VALVE. OUR CIRCULATORY SYSTEM IS A DOUBLE CIRCULATORY SYSTEM BECAUSE THE BLOOD FLOWS THROUGH THE HEART TWO TIMES. THE HEART IS 4 CHAMBERED BECAUSE THE OXYGEN WILL NOT MIX WITH CARBON DIOXIDE WHICH HELPS TO GET OXIDIZING QUICKLY TO GET ENERGY.
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