Learn About Respiratory System

RESPIRATORY SYSTEM Respiration is a procedure in which atmospheric air is exchanged with carbon dioxide at the respiratory surface (Lungs). During this process food is oxidize to produce carbon dioxide, water and energy. C6H12O6 + 6O2 6CO2+ 6H2O + 38ATP This process involves:- Intake of environment oxygen Oxidation of food Elimination of carbon dioxide and water Conservation of energy in the form of ATP. NOTE: Exchange of gases between the blood and the lungs is called external respiration and that between the blood and the cells is called internal respiration. FUNCTION OF RESPIRATION 1. Pulmonary ventilation means in which the inflow and outflow of air occurs between the atmosphere and lung alveoli. 2. Diffusion of oxygen and carbon dioxide among the alveoli and the blood. 3. Transport of oxygen and carbon dioxide in the blood and the body fluid to and from the body tissue cells. 4. Regulation of ventilation.ANATOMY OF RESPIRATON: - It comprises respiratory tract and respiratory organs. RESPIRATORY TRACT It consists of pair of external nostrils, nasal cavity, internal nares, nasopharynx (throat), larynx (voice box), trachea (wind pipe), bronchi, bronchioles, alveolar duct and alveolar sac. External nares- There are a pair of slit at the lower end