describe mechanism of breathing in human beings
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breathing is a process of getting in oxygen from air into the lungs and carbon dioxide out of the lungs
mechanism: involuntary rate controlled by brain outward and inward movement of ribs increase or decrease the space of throatic cavity, action affected by diaphragm continuous inhalation and exhalation of the air
mechanism: involuntary rate controlled by brain outward and inward movement of ribs increase or decrease the space of throatic cavity, action affected by diaphragm continuous inhalation and exhalation of the air
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THE MECHANISM OF BREATHING IN HUMAN BEINGS
when we inhale air, it passes through our nostrils into the nasal cavity. From the nasal cavity, that reaches our lungs show the windpipe. Lungs are present in the chest cavity this cavity is surrounded by ribs. A large muscular sheet called the diaphragm forms the floor of chest cavity. Breathing involves the movement of diaphragm and the Rib cage. During inhalation, ribs moves up and out words and diaphragm moves down. This movement increases space in a chest cavity and their rushes into the lungs. The lungs get filled with air. during exhalation ribs move down and inwards while diaphragm moves up to its former position. This reduces the size of the chest cavity and air is pushed out of the lungs..
when we inhale air, it passes through our nostrils into the nasal cavity. From the nasal cavity, that reaches our lungs show the windpipe. Lungs are present in the chest cavity this cavity is surrounded by ribs. A large muscular sheet called the diaphragm forms the floor of chest cavity. Breathing involves the movement of diaphragm and the Rib cage. During inhalation, ribs moves up and out words and diaphragm moves down. This movement increases space in a chest cavity and their rushes into the lungs. The lungs get filled with air. during exhalation ribs move down and inwards while diaphragm moves up to its former position. This reduces the size of the chest cavity and air is pushed out of the lungs..
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