Bio 449Lecture 21Oct. 25, 2010
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Transcript of Bio 449Lecture 21Oct. 25, 2010
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Bio 449 Lecture 21 Oct. 25, 2010
Cardiovascular Physiology IIIBlood flow (cont'd)Control of blood distribution (conclusion)Regulation of arteriolar diameter Capillary function Lymphatic system
Respiratory Physiology IOverview of ventilation and circulation Structure of mammalian pulmonary system Airway divisionsAlveolar structure and function
Terms to KnowUltrafiltrateLymphLymphatic systemLymphatic vesselsEdema Gas exchangeVentilation PharynxLarynxEpiglottisTracheaBronchus (pl. bronchi)BronchioleAlveolus (pl. alveoli) Thoracic cavityDiaphragmPleural membraneIntrapleural fluid
ReadingsLectures 21-22: Chapter 17
Terms to KnowVasodilationVasoconstriction Active hyperemiaNitric oxide
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Control of blood distribution
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Fig. 15-15
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Regulation of arteriolar diameter
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Capillary function
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Movement across capillary walls
Similar to Fig. 15-17
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Lymphatic system
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Lymph capillary
Overlappingendothelial cellsInterstitial
fluid
Lymph
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Uptake of lymph
Arteriole
Netabsorption
Lymphvessels
Netfiltration
Venule
Fig. 15-19
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Lymphatic system
Fig. 15-19
Spleen
Lymph nodes
Thymus
Blind-end lymphcapillaries
Lymph fluid empties into superior vena cava.
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Respiratory Physiology
Overview of ventilation and circulation
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Gas exchange
Fig. 15-19
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Structure of mammalian pulmonary system
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Pulmonary system
Fig. 17-2
Rightbronchus
Left bronchus
Left lung Diaphragm
Upperrespiratory
system
Lowerrespiratory
system
Right lung
TracheaLarynx
Vocal cords
Pharynx
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Respiratory tree
Fig. 17-2
Bronchiole
Trachea
Cartilagering
Larynx
Secondarybronchus
Left primarybronchus
Alveoli
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Alveoli
Fig. 17-2
Bronchiole
Smooth muscle
Capillary beds
Elasticfibers
Alveoli
Branch ofpulmonary artery
Branch ofpulmonary
vein
Lymphaticvessel
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Gas exchange
Fig. 17-2
Fusedbasement
membranes
Alveolarair space
Plasma
Alveolarepithelium
~1 μm
Surfactant
Endothelium
RBC
Capillary
Alveolus
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Pleural cavities
Fig. 17-2
Right lung
Pericardialcavity
Right pleuralcavity
Pleuralmembranes
Left pleuralcavity
Left lung
Heart