NOUN
- a structure arising ventrally from a vertebral centrum and enclosing the caudal blood vessels
How To Use haemal arch In A Sentence
- In basal cross section, the fused chevrons of the haemal arch have a flattened medial face and a U-shaped lateral face.
- 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
- In other tetrapods, haemal arches do not begin for several vertebrae posterior to the sacrum.
- In basal cross section, the fused chevrons of the haemal arch have a flattened medial face and a U-shaped lateral face.