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SYSTEMIC VEIN ANATOMY & PHYSIOLOGY

SYSTEMIC VEIN ANATOMY & PHYSIOLOGY. Nketi Forbang, MD, MPH T32 Mini Lecture, 07/13/18. LEARNING OBJECTIVES. By the end of this lecture, you will be able to: Describe the basic structure and function of veins [& arteries] Identify the three layers that make up the walls of veins [& arteries]

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SYSTEMIC VEIN ANATOMY & PHYSIOLOGY

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  1. SYSTEMIC VEIN ANATOMY & PHYSIOLOGY Nketi Forbang, MD, MPH T32 Mini Lecture, 07/13/18

  2. LEARNING OBJECTIVES • By the end of this lecture, you will be able to: • Describe the basic structure and function of veins [& arteries] • Identify the three layers that make up the walls of veins [& arteries] • Understand the changes that take place as blood flows through veins [& arteries]

  3. OUTLINE • Pre-Quiz • Introduction • Structure & function of veins • Wall layers (tunica) of veins • Blood flow through veins • POST-QUIZ

  4. PRE-QUIZ • #1) Which of the following best describes typical veins? • A: Thick walled, small lumens, high pressure, lack valves, return blood to heart • B: Thin walled, large lumens, low pressure, have valves, return blood to heart • C: Thick walled, small lumens, high pressure, lack valves, return blood to heart • D: Thick walled, large lumens, low pressure, have valves, return blood to heart

  5. PRE-QUIZ • #2) In general, compared to arteries, veins have: • A: Thicker tunica intima, thicker tunica media, thinner tunica externa • B: Thinner tunica intima, thinner tunica media, thicker tunica externa • C: Thicker tunica intima, thicker tunica media, thinner tunica externa • D: Thinner tunica intima, thinner tunica media, thicker tunica externa

  6. PRE-QUIZ • #3) Under normal physiologic conditions, the largest distribution of blood flow in humans can be found in the: • A: Systemic veins • B: Systemic arteries • C: Pulmonary veins & arteries • D: Heart

  7. INTRODUCTION

  8. VEIN STRUCTURE & FUNCTION

  9. VEIN LAYERS (TUNICA)

  10. VEIN LAYERS (TUNICA)

  11. VEIN LAYERS (TUNICA)

  12. BLOOD FLOW • Vessels size decrease, then increase • Vessel area increases, then decreases • Blood velocity decreases, then increases • Blood pressure decreases

  13. BLOOD FLOW

  14. POST-QUIZ • #1) Which of the following best describes typical veins? • A: Thick walled, small lumens, high pressure, lack valves, return blood to heart • B: Thin walled, large lumens, low pressure, have valves, return blood to heart • C: Thick walled, small lumens, high pressure, lack valves, return blood to heart • D: Thick walled, large lumens, low pressure, have valves, return blood to heart

  15. POST-QUIZ • #1) Which of the following best describes veins? • A: Thick walled, small lumens, high pressure, lack valves, return blood to heart • B: Thin walled, large lumens, low pressure, have valves, return blood to heart • C: Thick walled, small lumens, high pressure, lack valves, return blood to heart • D: Thick walled, large lumens, low pressure, have valves, return blood to heart

  16. POST-QUIZ • #2) In general compared to arteries, veins have: • A: Thicker tunica intima, thicker tunica media, thinner tunica externa • B: Thinner tunica intima, thinner tunica media, thicker tunica externa • C: Thicker tunica intima, thicker tunica media, thinner tunica externa • D: Thinner tunica intima, thinner tunica media, thicker tunica externa

  17. POST-QUIZ • #2) In general compared to arteries, veins have: • A: Thicker tunica intima, thicker tunica media, thinner tunica externa • B: Thinner tunica intima, thinner tunica media, thicker tunica externa • C: Thicker tunica intima, thicker tunica media, thinner tunica externa • D: Thinner tunica intima, thinner tunica media, thicker tunica externa

  18. POST-QUIZ • #3) Under normal physiologic conditions, the largest distribution of blood flow in humans can be found in the: • A: Systemic veins • B: Systemic arteries • C: Pulmonary veins & arteries • D: Heart

  19. PRE-QUIZ • #3) Under normal physiologic conditions, the largest distribution of blood flow in humans can be found in the: • A: Systemic veins • B: Systemic arteries • C: Pulmonary veins & arteries • D: Heart

  20. THE END • References • https://courses.lumenlearning.com/suny-ap2/chapter/structure-and-function-of-blood-vessels/ • Google images

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