lec 10 respiratory1.pptx

Lec 10 - Respiratory System 13 The goal of these lectures is to discuss basic respiratory physiology This lecture will introduce the topic and

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1 Respiratory System Introduction Structure / function, gas laws, lung/chest wall relations, pressures / forces Lungs mechanics Ventilation, complience, capacities, pressures Alveolar gas pressures, ventilation, blood f ow Gas exchange in tissues 13 The goal of these lectures is to discuss basic respiratory physiology. This lecture will introduce the topic and discuss lung mechanics. The sections for this lecture are: Life is a series of chemical reactions occurring in compartmentalized environments. The main purpose of life is to keep itself alive Physiology, the study of how life works, is based on the simultaneous occurrence of the following three concepts: levels of organization structure / function relationship homeostatic regulation neural CV center heart lung periphery cardio + cardio - vasoconstriction PCO2 PO2 pH Pa extrinsic intrinsic (local control) (local control) baroreceptor mechanism (e.g. carotid sinus) chemo & baroreceptors inputs output where we would like to be at the end of the cardiovascular and respiratory sections, by the end of this week
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2 Respiratory System Introduction, today lecture Structure / function, gas laws, lungs / chest wall relations, pressures / forces Lung mechanics, today lecture Ventilation, inspiration / expiration, complience / resitance Lung volume /capacities, alveolar ventilation / dead space Partial pressures of gases and their diffusion in liquids Alveolar gas pressures and alveolar - blood exchange Matching alveolar ventilation and alveolar blood f ow Gas exchange in tissues Transport of O2, CO2 and H ions in blood, next lecture Hemoglobin (Hb), effect of PO2 on Hb saturation Blood PCO2, H + conc, t°C, DPG on Hb saturation Carbamino compounds and carbonic anhydrase Total blood carbon dioxide and the Haldane effect Respiratory acidosis and respiratory alkalosis Control of respiration, next lecture Neural generation of rhythmical breathing Control of ventilation by PO2, PCO2, and H + conc Control of ventilation during exercise Other ventilatory responses Hypoxia and non-respiratory functions of lungs, next lecture Hypoxia and acclimatization to high altitude Non-respiratory functions of the lungs levels of organization structure - function homeostatic regulation Respiratory System
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3 Respiratory System error signal amplification effectors mechanism effect Homeostasis, or constancy of the internal environment, is needed for chemical reactions underlying life to occur. It is maintained, predominantly, through negative feedback mechanisms what it actually is (info from
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This note was uploaded on 10/19/2011 for the course ANIMALSCIE 11 06 300 taught by Professor Advis during the Spring '11 term at Rutgers.

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Lec 10 - Respiratory System 13 The goal of these lectures is to discuss basic respiratory physiology This lecture will introduce the topic and

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