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please explain respiration process

Respiration is the process of exchange of O2 from the atmosphere with CO2 produced by the cells.
Respiration has three basic steps involved :-
  • Breathing or Pulmonary ventilation which atmospheric air is drawn in and CO2 rich alveolar air is released out. Air flows between the atmosphere and the alveoli of the lungs because of alternating pressure differences created by contraction and relaxation of respiratory muscles.
  • External or pulmonary respiration is the exchange of gases between the alveoli of the lungs and the blood in pulmonary capillaries across the respiratory membrane. Transport of gases by the blood.
  • Tissue or internal respiration is the exchange of gases between blood in systemic capillaries and tissue cells. In this step the blood loses oxygen and gains carbon dioxide. 

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You breathe with the help of your diaphragm (which is a dome-shaped muscle under your rib cage) and other muscles in your chest and abdomen. These muscles will literally change the space and pressure inside your body cavity to accomodate your breathing. When your diaphragm pulls down, it is making room for the lungs to expand. The lungs get bigger with air and pushes the diaphragm down. The diaphragm also lowers the internal air pressure.

Outside of your body, the air pressure is greater and you suck in air when you inhale. The air then expands your lungs like two balloons being blown up. When your diaphragm relaxes, it moves up and the cavity inside your body gets smaller. Your muscles will then squeeze your rib cage and your lungs begin to collapse as the air is pushed up and out your body when you exhale.

hope this helps !

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 Respiration (often mistaken with breathing) is defined as the transport of oxygen from the outside air to the cells within tissues, and the transport of carbon dioxide in the opposite direction. This is in contrast to the biochemical definition of respiration, which refers to cellular respiration: the metabolic process by which an organism obtains energy by reacting oxygen with glucose to give water, carbon dioxide and ATP (energy). Although physiologic respiration is necessary to sustain cellular respiration and thus life in animals, the processes are distinct: cellular respiration takes place in individual cells of the animal, while physiologic respiration concerns the bulk flow and transport of metabolites between the organism and the external environment.

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What is the process of Respiration? Respiration is an essential and important process in all living organisms. It helps in the exchange of gases and provide oxygen which is very important for the survival of most of the life forms on earth.  Respiration is something we all know about as it is a visible and regular process, one which we experience with every breath. Exhalation and inhalation are the two stages associated with respiration. Our body is in need of oxygen for survival which is available in the atmospheric air. During inhalation we breathe in the oxygen and expel out carbon dioxide during exhalation. What is Respiration?

Respiration is a process which provides body with oxygen for growth and other metabolic activities and removes waste products in the form of carbon dioxide gas. The exchange of gases take place in the Lungs. The Lungs are the main organs involved in the respiration process. Air passes into the lungs through the process of inhalation through the nostrils and the air flows down the trachea into the lungs. The Lungs have alveoli which are small air sacs and  is filled with tiny capillaries which are functional in the carrying of oxygen and carbondioxide back and forth from the heart to the lungs. Respiration process in plants and animals takes place differently thought he main goal is similar.  The organs of respiration are different in living organisms based on their evolution, Some respire through skin such as earthworm, fish use gills while whales use both gills and lungs like mammals.  Since the process occurs inside the cells, it is also called as cellular respiration. During this process, carbohydrates mainly the glucose is broken down and energy(ATP) is released. This energy is used by the cells for various functions and processes from muscle contraction to cell building, repair and growth.

 

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