A_cv-vess3C - Cardiovascular System Part 3 - Vessels S C...

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1 Organ Performance Demands Effective Delivery of Blood Cardiovascular System Part 3 - Vessels S. C. Williams Life Art 1994
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2 Introduction Arteries and arterioles Veins and venules Capillaries What do they do? Delivers blood to target organs and tissues Arteries maintain blood pressure Remove wastes from tissues and organs Facilitate circulation of blood Life Art 1992
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3 Blood Flow Pattern Heart --> arteries --> arterioles --> capillaries --> venules --> veins --> heart Capillaries are “leaky” -- i.E. There is a continual net movement of fluid out of capillaries hear t capillaries veins arteries capillaries portal vein
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4 Structure of Arteries & Veins - Cross Section Tubular design -- lumen + three tunics Tunica intima -- simple squamous epithelium (“endothelium”) + supportive areolar tissue Tunica media -- elastic connective tissue + smooth muscle Tunica externa (= adventitia) -- white fibrous connective tissue Tortora 2002
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5 Artery Vs. Veins Structural Differences Lumen size -- arteries have smaller lumens Wall thickness -- arteries have
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This note was uploaded on 09/23/2011 for the course BIOL 328 taught by Professor Staff during the Spring '11 term at S.F. State.

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A_cv-vess3C - Cardiovascular System Part 3 - Vessels S C...

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