Write mechanism involved in inspiration and expiration
Answers
Explanation:
breathing involves two stages inspiration during which atmospheric air is drawn in and expiration by which alveolar air released by creating a pressure gradient between the lungs and the atmosphere inspiration can occur in the present within the lungs intrapulmonary pressure is less than the atmospheric pressure that is there is a negative pressure in the lungs with respect to atmospheric pressure similarly expression takes place when the intrapulmonary pressure is higher than the atmospheric pressure the diaphragm and specialises external intercostal internals muscles between the Ribs helps in the generation of such Radiance inspiration is initiated by the contraction of diaphragm which increases the volume of thoracic chamber in anteroposterior Axis the contraction of external internal coastal muscles lips of the ribs and sternum costing and increase in the volume of the thoracic chamber in a dorsiventral access the overall increase in the thoracic volume causes a similar increase in the pulmonary volume and increase in the pulmonary volume decreases the intrapulmonary pleasure to less than the atmospheric pressure which forces the air 2 from outside to move into the language that is inspiration relaxation of the day after and internal coastal muscles return the diaphragm understand to a normal positions and reduces thoracic volume and thereby the pulmonary volume this leads to the increase light above than atmospheric pressure that is intrapulmonary pressure is slightly above the atmospheric pressure causing the expansion of air from the lungs that is expiration we have the ability to increase strength of inspiration and expiration with the help of additional muscles in the abdomen on average healthy human breed 12 to 16 min per minute the volume of air involved in breathing movement can be estimated by using a spirometer which helps the clinical assessment of the pulmonary function
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