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hemal arch

资料来源 : Webster's Revised Unabridged Dictionary (1913)

Hemal \He"mal\, a. [Gr. a"i^ma blood.]
   Relating to the blood or blood vessels; pertaining to,
   situated in the region of, or on the side with, the heart and
   great blood vessels; -- opposed to neural.

   Note: As applied to vertebrates, hemal is the same as
         ventral, the heart and great blood vessels being on the
         ventral, and the central nervous system on the dorsal,
         side of the vertebral column.

   {Hemal arch} (Anat.), the ventral arch in a segment of the
      spinal skeleton, formed by vertebral processes or ribs.

资料来源 : WordNet®

hemal arch
     n : a structure arising ventrally from a vertebral centrum and
         enclosing the caudal blood vessels [syn: {haemal arch}]
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