Bio 449Lecture 21Oct. 25, 2010 Cardiovascular Physiology III Blood flow (cont'd) Control of blood distribution (conclusion) Regulation of arteriolar diameter.

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Presentation transcript:

Bio 449Lecture 21Oct. 25, 2010 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 Ultrafiltrate Lymph Lymphatic system Lymphatic vessels Edema Gas exchange Ventilation Pharynx Larynx Epiglottis Trachea Bronchus (pl. bronchi) Bronchiole Alveolus (pl. alveoli) Thoracic cavity Diaphragm Pleural membrane Intrapleural fluid Readings Lectures 21-22:Chapter 17 Terms to Know Vasodilation Vasoconstriction Active hyperemia Nitric oxide

Control of blood distribution

Fig

Regulation of arteriolar diameter

Capillary function

Movement across capillary walls Similar to Fig

Lymphatic system

Lymph capillary Overlapping endothelial cells Interstitial fluid Lymph

Uptake of lymph Arteriole Net absorption Lymph vessels Net filtration Venule Fig

Lymphatic system Fig Spleen Lymph nodes Thymus Blind-end lymph capillaries Lymph fluid empties into superior vena cava.

Respiratory Physiology Overview of ventilation and circulation

Gas exchange Fig

Structure of mammalian pulmonary system

Pulmonary system Fig Right bronchus Left bronchus Left lung Diaphragm Upper respiratory system Lower respiratory system Right lung Trachea Larynx Vocal cords Pharynx

Respiratory tree Fig Bronchiole Trachea Cartilage ring Larynx Secondary bronchus Left primary bronchus Alveoli

Fig Bronchiole Smooth muscle Capillary beds Elastic fibers Alveoli Branch of pulmonary artery Branch of pulmonary vein Lymphatic vessel

Gas exchange Fig Fused basement membranes Alveolar air space Plasma Alveolar epithelium ~1 μm Surfactant Endothelium RBC Capillary Alveolus

Pleural cavities Fig Rightlung Pericardial cavity Right pleural cavity Pleural membranes Left pleural cavity Leftlung Heart

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