How To Use Haemal arch In A Sentence
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In basal cross section, the fused chevrons of the haemal arch have a flattened medial face and a U-shaped lateral face.
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In the caudal region, instead of ribs projecting outwardly, there are haemal processes, inclined downwards and meeting below, forming an arch, the haemal arch, containing the caudal artery and vein -- the vein ventral to the artery -- and resembling the neural arch, which contains the spinal cord above, in shape and size.
Text Book of Biology, Part 1: Vertebrata
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In other tetrapods, haemal arches do not begin for several vertebrae posterior to the sacrum.
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In basal cross section, the fused chevrons of the haemal arch have a flattened medial face and a U-shaped lateral face.
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