Blood Vessels

Card Set Information

Author:
ayeshakhan16
ID:
57777
Filename:
Blood Vessels
Updated:
2011-01-02 16:23:52
Tags:
Circulatory System
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Description:
The features of arteries, veins and capillaries.
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  1. In the arteries is there a THICK or THIN layer of COLLAGEN FIBRES?
    Thick!
  2. Does the artery have muscles and elastic tissue?
    YES, a thick layer of muscle and many elastic tissues for SMOOTH BLOOD FLOW
  3. Does that Artery have an inner lining of squamous epithelium?
    Yup
  4. Does the artery contain any valves? and why?
    No, because the blood is under CONSTANT HIGH PRESSURE so tends not to flow backwards.
  5. Which arteries have valves?
    The ones leaving the heart
  6. Is blood in the arteries under high or low pressure?
    HiGh
  7. Is the lumen of the artery wide or narrow?
    narrow
  8. There is a thicker layer of collagen in the VEINS than in the arteries.
    True or False
    True
  9. How thick is the layer of muscle in the veins? and how much elastic fibres?
    There is a THIN layer of muscle and few elastic fibres.
  10. Do the veins have valves?
    yesiree
  11. High or low pressure within the vein?
    Low Pressure
  12. How big is the lumen of the veins in diameter ?
    Large and irregular
  13. Do the capillaries contain collagen fibres?
    NO
  14. Do the Capillaries have muscles and elastic tissue?
    NO
  15. Do the Capillaries have any valves?
    NO
  16. What is pressure like within the capillaries?
    Low
  17. How big is the lumen within a capillary?
    MICROSCOPIC - allows a few blood cells at a time

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