Blood Vessel

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  1. carry blood away from the heart; from the heart to another body organ
    Arterial Vessels
  2. What are the three types of arterial vessels
    • 1. elastic arteries/conducting arteries
    • 2. muscular arteries/distributing arteries
    • 3. arterioles
  3. largest arteries in the body; closest to the heart; elastic to allow stretch as blood leaves the heart and moves through these arteries
    elastic arteries/conducting arteries
  4. medium arteries; distribute blood to body regions; more muscular to control the distribution of blood to the body parts
    muscular arteries/distributing arteries
  5. smallest arteries; enter the organs; contain precapillary sphincter to control the pressure of the blood entering the capillary
  6. the smallest blood vessels present inside the tissues as beds of many individual capillary vessels
  7. What are the two types of capillaries?
    • 1. continuous capillaries
    • 2. fenestrated capillaries
  8. What capillaries have solid endothelium with no holes between the cells; found throughout the body?
    continuous capillaries
  9. What capillaries have "holey" endothelium with spaces/pores between the cells; found in the urinary system?
    fenestrated capillaries
  10. the middle layer of the blood vessel wall; made of smooth muscle; it is the layer that can contract and constrict the blood vessel or relax to dilate the blood vessel
    Tunica media
  11. the outer layer of the blood vessel wall; made of dense fibrous CT; holds the shape of the blood vessel
    Tunica externa (adventitia)
  12. the inside layer next to the lumen (opening of blood vessel that blood moves through); made of simple squamous epithelium which is endothelium in the cardiovascular system due to its special properties
    Tunica intima
  13. opening of blood vessel that blood moves through
  14. Which arterial Vessel has the highest BP= 120mmHg
    Elastic arteries/conducting arteries
  15. Which Arterial Vessel has a BP=100mmHg
    muscular arteries/distributing arteries
  16. What arterial vessel has BP= 90mmHg
  17. tube system that carries blood through the body
  18. Circulation of the heart
    starts at the heart-->artery-->arteriole-->capillary-->venule-->vein-->then back to the heart
  19. present in the arteriole; controls the pressure of the blood entering the capillary
    precapillary sphincter
  20. return blood to the heart; from the body organs to the heart
    Venous Vessels
  21. made of endothelium and tunica adventitia; may contain smooth muscle
    Vessel walls
  22. What are the two types of venous vessels?
    • 1. venules
    • 2. veins
  23. smallest veins; collect blood from capillaries for return to the heart; have small amounts of smooth muscle scattered along the              
  24. largest blood vessels in the body; collapse when empty of blood; contains all 3 tissue layers , with less smooth muscle than arteries; hold the reserve volume of blood (venous reservoir)
  25. valves in veins that close to prevent backflow of blood
    Venous valves
  26. pressure across blood vessels:
    • Artery=120-100 mmHg
    • Arterioles= 90 mmHg
    • Capillaries= 35-45 mmHg
    • Venules =25 mmHg
    • Veins= 25 mmHg
  27. Special vessels found only in the fetus to bypass organs that are not active during development
    • ductus arteriosus
    • foramen ovale
    • ductus venosus
    • umbilical artery
    • umbilical vein
  28. connection between the aorta and pulmonary trunk; function=to bypass the lungs
    ductus arteriosus
  29. home in the interatrial septum between the Right and Left atria; function= to bypass the fetal lungs ( connects the right atrium to the left atrium)
    foramen ovale
  30. connection between the portal vein to the liver and the inferior vena cava; function= to bypass the liver
    ductus venosus
  31. 2 vessels that carry deoxygenated blood from the fetus to the placenta; function= to pick up oxygen at the placenta and get rid of wastes
    Umbilical artery
  32. 1 vessel that carries oxygenated blood from the placenta to the fetus; function= delivers blood with oxygen to the fetus
    umbilical vein
  33. When are the special vessels found only in the fetus suppose to close off?
    before birth
  34. swollen areas of veins around the valve; due to blood collection behind the valve; this blood cannot move from behind the valve
    varicose veins
  35. swollen area of weakened arterial wall; may be life threatening if it bursts, due to tissue damage and  lack of oxygen
  36. hardening of the arteries due to plaque build up on the inner arterial wall; arteriosclerosis involves a coronary artery; atherosclerosis involves any artery
  37. which arterial vessels have most control over BP
Card Set:
Blood Vessel
2014-02-25 04:30:49
blood vessel
BIO 139
blood vessel
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