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XI1 - d often leads to respiratory failure 2 obstructive...

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XI. Exercise and Altitude Effects A. Exercise Effects 1. hyperpnea - increase in DEPTH, not rate 2. steady state - increase in RATE and DEPTH gradually altered to MATCH gas exchange needs a. conscious awareness of exercise b. cortex stimulates muscles & respiratory center c. proprioceptors in muscles, tendons, joints B. Altitude Effects 1. acclimatization - physiological adaptation to lower Oxygen content at higher altitude a. body “set-points” for Oxygen and Carb Diox will reset over a period of time XII. COPD and Cancer A. Chronic Obstructive Pulmonary Disease (COPD) 1. Common features of COPD a. almost all have smoking history b. dyspnea - chronic "gasping" for air c. frequent coughing and infections
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Unformatted text preview: d. often leads to respiratory failure 2. obstructive emphysema - usually results from smoking a. enlargement & deterioration of alveoli b. loss of elasticity of the lungs c. "barrel chest" from bronchiole opening during inhalation & constriction during exhalation 3. chronic bronchitis - mucus/inflammation of mucosa B. Lung Cancer 1. squamous cell carcinoma (20-40%) - epithelium of the bronchi and bronchioles 2. adenocarcinoma ( 25-35 %) - cells of bronchiole glands and cells of the alveoli 3. small cell carcinoma (10-20%) - special lymphocyte-like cells of the bronchi 4. 90% of all lung cancers are in people who smoke or have smoked...
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