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vertebra
(redirected from caudal vertebra)

   Also found in: Dictionary/thesaurus, Medical, Encyclopedia, Wikipedia 0.01 sec.

vertebra

In anatomy, an irregularly shaped bone that forms part of the vertebral column. Children have 33 vertebrae, 5 of which fuse in adults to form the sacrum and 4 to form the coccyx. There are 7 cervical vertebrae in the neck, 12 thoracic vertebrae in the thorax with the ribs attached, and 5 lumbar vertebrae in the lower back.



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Description D XIII-XIV, 13-16; A III, 7-9; P1 16-19, 7-11 simple; lateral-line pores 43-54, scales 47-63; gill rakers 32-37 (10-11 + 22-26); vertebrae 28-29 (11-12 + 16-18) (one of ten specimens with 27 vertebrae, with one caudal vertebra bearing two neural and two haemal spines).
First haemal arch emanating from first caudal vertebra, anterior parapophysis directed ventromedially to fuse with contralateral structure, produced as haemal spine.
 
 
 
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