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ch_19_summary - 19::BloodVessels Objectives PART1: 1 , 2

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19: The Cardiovascular System: Blood Vessels Objectives PART 1: OVERVIEW OF BLOOD VESSEL STRUCTURE AND FUNCTION Structure of Blood Vessel Walls 1. Describe the three layers that typically form the wall of a blood vessel, and state the function of each. 2. Define vasoconstriction and vasodilation. Arterial System 3. Compare and contrast the structure and function of the three types of arteries. Capillaries  4. Describe the structure and function of a capillary bed. Venous System 5. Describe the structure and function of veins, and explain how veins differ from arteries. PART 2: PHYSIOLOGY OF CIRCULATION Introduction to Blood Flow, Blood Pressure, and Resistance 6. Define blood flow, blood pressure, and resistance, and explain the relationships between these factors. Systemic Blood Pressure 7. List and explain the factors that influence blood pressure, and describe how blood pressure is  regulated. 8. Define hypertension. Describe its manifestations and consequences. Blood Flow Through Body Tissues: Tissue Perfusion 9. Explain how blood flow is regulated in the body in general and in its specific organs. 10. Outline factors involved in capillary dynamics, and explain the significance of each. 11. Define circulatory shock. List several possible causes. PART 3: CIRCULATORY PATHWAYS: BLOOD VESSELS OF THE BODY The Two Main Circulations of the Body 12. Trace the pathway of blood through the pulmonary circuit, and state the importance of this special  circulation. 13. Describe the general functions of the systemic circuit.
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Principal Vessels of the Systemic Circulation 14. Name and give the location of the major arteries and veins in the systemic circulation. 15. Describe the structure and special function of the hepatic portal system. Developmental Aspects of Blood Vessels 16. Explain how blood vessels develop in the fetus. 17. Provide examples of changes that often occur in blood vessels as a person ages. Chapter Outline PART 1: OVERVIEW OF BLOOD VESSEL STRUCTURE AND FUNCTION (pp. 694– 703; Figs. 19.1–19.5; Table 19.1) I. Structure of Blood Vessel Walls (p. 695; Figs. 19.1–19.2; Table 19.1) A. The walls of all blood vessels except the smallest consist of three layers: the tunica intima, tunica  media, and tunica externa (p. 695; Fig. 19.1). B. The tunica intima reduces friction between the vessel walls and blood; the tunica media controls  vasoconstriction and vasodilation of the vessel; and the tunica externa protects, reinforces, and  anchors the vessel to surrounding structures (p. 695; Fig. 19.2; Table 19.1).
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