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Spirometry Nevada Health Science

Spirometry Nevada Health Science. Respiration. External respiration – Gas exchange between blood and alveoli Internal respiration – Gas exchange between blood and tissue cells. Pulmonary Ventilation.

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Spirometry Nevada Health Science

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  1. SpirometryNevada Health Science

  2. Respiration • External respiration – Gas exchange between blood and alveoli • Internal respiration – Gas exchange between blood and tissue cells

  3. Pulmonary Ventilation • Inspiration – Diaphragm and intercostals muscles contract resulting in increased volume and decreased pressure in the thoracic cavity; air rushes in

  4. Pulmonary Ventilation • Expiration – Diaphragm and intercostals muscles relax resulting in decreased volume and increased pressure in the thoracic cavity; air pushed out

  5. Respiratory Volumes • Tidal volume - normal amount of air inhales or exhaled • Inspiratory reserve volume amount of air that can be forcefully inhaled after normal inhalation • Expiratory reserve volume – amount of air that can be forcefully exhaled after normal exhalation

  6. Respiratory Volumes • Vital capacity – maximum amount of air that can be exhaled after maximum inhalation • Residual volume – amount of air that can be exhaled after maximum inhalation

  7. Factors altering normal function • Diseases • Disorders • Pollutants in the environment • Trauma

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