Why doesn’t a significant amount of blood flow back ?

Posted by admin
Kayleighs mommy asked:


finishing up the question–into the vena cavae and coronary sinus during atrial contraction??

a. the bicuspid valve blocks the venous openings
b. the contraction of the atria compresses and closes the venous openings
c. the semilunar valves block the venous openings
d. the venous valves block the venous openings
e. the tricuspid valve blocks the venous openings

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    • This entry was posted on Monday, June 14th, 2010 at 12:16 am and is filed under atrial contractions. You can follow any responses to this entry through the RSS 2.0 feed. Both comments and pings are currently closed.

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    No Responses to “Why doesn’t a significant amount of blood flow back ?”

    1. Peter S Says:
      June 16th, 2010 at 9:10 am

      The venous openings.
      The contraction of the atria compresses and closes the atria compresses and closes the atria compresses and closes the venous openings.