Week 5 2402 Lab Cardio & Vessels_students.pptx - 2402...

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2402 Lab Week 5 Unit 18 Cardiovascular Physiology & Blood Vessels 1
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2 Blood vessel function: Closed system of vessels Major vessel types: Arteries Arterioles Capillaries Venules Veins
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3 Three types of blood vessels: Arteries (arterioles) blood away from heart Capillaries nutrient & gas exchange Veins (venules) blood toward heart Function for 3 types
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4 Basic structure of arteries, veins, capillaries: 3 layers (tunics) Tunica interna Endothelium Basement mb Internal elastic lamina (artery) Tunica media Mesothelium Ext. elastic lamina (artery) Tunica externa Modifications account for 5 types of blood vessels & their structural/ functional differences
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5 Arterial characteristics: 3 layers of typical blood vessel Thicker muscular- to-elastic tunica media Vasoconstriction Vasodilation Functional properties of arteries: High compliance Elasticity
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6 arteries: Elastic (EA) Thick walled w/ large
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