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Bio 449 Lecture 21 Oct. 25, 2010

Bio 449 Lecture 21 Oct. 25, 2010. Terms to Know Vasodilation Vasoconstriction Active hyperemia Nitric oxide . Readings Lectures 21-22: Chapter 17. Cardiovascular Physiology III Blood flow (cont'd) Control of blood distribution (conclusion) Regulation of arteriolar diameter

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Bio 449 Lecture 21 Oct. 25, 2010

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  1. Bio 449 Lecture 21 Oct. 25, 2010 Terms to Know VasodilationVasoconstriction Active hyperemiaNitric oxide Readings Lectures 21-22: Chapter 17 Cardiovascular Physiology III Blood flow (cont'd) Control of blood distribution (conclusion) Regulation of arteriolar diameter Capillary function Lymphatic system Respiratory Physiology I Overview of ventilation and circulation Structure of mammalian pulmonary system Airway divisions Alveolar structure and function Terms to Know UltrafiltrateLymphLymphatic systemLymphatic vesselsEdema Gas exchangeVentilation PharynxLarynxEpiglottisTracheaBronchus (pl. bronchi)BronchioleAlveolus (pl. alveoli) Thoracic cavityDiaphragmPleural membraneIntrapleural fluid

  2. Control of blood distribution

  3. Fig. 15-15

  4. Regulation of arteriolar diameter

  5. Capillary function

  6. Movement across capillary walls Similar to Fig. 15-17

  7. Lymphatic system

  8. Lymph capillary Overlapping endothelial cells Interstitial fluid Lymph

  9. Uptake of lymph Venule Arteriole Netfiltration Netabsorption Lymphvessels Fig. 15-19

  10. Lymphatic system Thymus Lymph fluid empties into superior vena cava. Spleen Blind-end lymphcapillaries Lymph nodes Fig. 15-19

  11. Respiratory Physiology Overview of ventilation and circulation

  12. Gas exchange Fig. 15-19

  13. Structure of mammalian pulmonary system

  14. Pulmonary system Pharynx Vocal cords Upperrespiratorysystem Larynx Trachea Lowerrespiratorysystem Right lung Left lung Diaphragm Left bronchus Rightbronchus Fig. 17-2

  15. Respiratory tree Larynx Trachea Cartilagering Left primarybronchus Secondarybronchus Bronchiole Alveoli Fig. 17-2

  16. Alveoli Bronchiole Branch ofpulmonary artery Smooth muscle Elasticfibers Lymphaticvessel Branch ofpulmonaryvein Capillary beds Alveoli Fig. 17-2

  17. Gas exchange RBC Plasma Capillary Endothelium ~1 μm Alveolarair space Alveolus Fusedbasementmembranes Surfactant Alveolarepithelium Fig. 17-2

  18. Pleural cavities Pleuralmembranes Right lung Left lung Heart Right pleuralcavity Pericardialcavity Left pleuralcavity Fig. 17-2

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