Vessels and Lymph

Vessels and Lymph - Circulatory System Blood Vessels...

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Circulatory System Blood Vessels
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Organization of Blood Vessels Large arteries (Elastic arteries) leave heart and divide to become smaller and smaller vessels Medium arteries (Muscular arteries) Arterioles Capillaries or Sinusoid exchange oxygen and nutrients at the tissues Small veins (venules) start to bring blood back to the heart. The blood collects into bigger and bigger vessels Medium Veins Large Veins enter the heart
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Blood Vessel Walls Three Layers to most blood vessel walls Tunica Externa Consists of Collagen Fibers Tunica Media Consists of smooth muscle and elastic fibers Tunica Interna Consists of endothelium (simple squamous)
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Generalized Structure of Blood  Vessels Figure 19.1b
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Categories of Blood Vessels Arteries Elastic: Many elastic fibers in the tunica media Muscular: More smooth muscle in the tunica media Arteriole Veins Large Medium Venules Capillaries Continuous Fenestrated Sinusoids
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Continuous Capillaries Figure 19.3a
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Fenestrated Capillaries Figure 19.3b
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Sinusoids Figure 19.3c
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Capillary Beds Figure 19.4a
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Capillary Beds Figure 19.4b
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Factors Aiding Venous Return Figure 19.6
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Velocity of Blood Flow Figure 19.13
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Figure 19.19b Aorta and Major Arteries
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Figure 19.20b Arteries of the Head and Neck
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Figure 19.20d Arteries of the Brain
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Figure 19.22b Arteries of the Abdomen
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Figure 19.22c Arteries of the Abdomen
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Figure 19.22d Arteries of the Abdomen
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Arteries of the Lower Limbs Figure 19.23b, c
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Figure 19.24b Veins of Systemic Circulation
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Figure 19.25b Veins of the Head and Neck
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Figure 19.26b Veins of the Upper Limbs and Thorax
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Figure 19.27b Veins of the Abdomen
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Figure 19.27c Veins of the Abdomen
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Figure 19.28b, c Veins of the Pelvis and Lower Limbs
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Lymphatic System
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Vessels and Lymph - Circulatory System Blood Vessels...

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