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循環生理黃基礎.ppt

发布:2016-08-14约1.61千字共21页下载文档
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循環生理 黃基礎 1998, 10, 23 Design of circulatory system Three essential components: 1. blood: circulatory fluid 2. vascular system : through which the fluid can circulate 3. a heart: to pump the blood Two type of circulatory system 1. open circulatory system 2. closed circulatory system Vertebrate circulatory system Circulatory pattern 1. Fish 硬骨魚的心臟有: Sinus venous atrium ventricle bulbus cordis 肺魚(lungfish): 兼具肺呼吸與鰓呼吸,因此,其循環系統必須將充氧血(oxygenated blood)與缺氧血(deoxygenated blood)分開, 兩生類: 心房完全分為二,心室一個, 左心房接受來自肺的血液, 右心房接受來自體循環的血液 心房與心室之間有須多分隔( trabaculae),使左右心房的血液不至於完全相混; 不僅如此,血液從心室出來時,流經 conus arteriosus (bulbus cordis),這裡有螺旋摺皺(spiral fold)以分開充氧血與缺氧血 爬蟲類 鱷魚的心臟很特殊 兩心房、兩心室 左心室→ right aorta → to head and body 右心室→ pulmonary artery → to the lung 右心室基部另發出有 left aorta * * * * * * *
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