The vascular system of Littorina littorea differs from the more familiar vertebrate pattern in a number of important respects: the heart receives primarily oxygenated blood to circulate to the body...; there is no capillary system between the arteries and veins but a series of indefinite haemal spaces, though these are not necessarily of dimensions very different from capillaries.    From Wordnik.com.  [How to perform CPR on a slug] Reference

Now he saw far above him the backbone of the apparatus and its big ribs, "like the neural and haemal canals," said.    From Wordnik.com.  [The War in the Air] Reference

Your line of credit business may be a distributional pyxie or a twofold tubman patriarchy or semiweekly an nobelist haemal in stanhope.    From Wordnik.com.  [Rational Review] Reference

Before throwing tail and hinder part of body away, note the myotomes of body wall, the notochord and vertebral body, neural canal, and, in the tail, the haemal canal.    From Wordnik.com.  [Text Book of Biology, Part 1: Vertebrata] Reference

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.    From Wordnik.com.  [Text Book of Biology, Part 1: Vertebrata] Reference

“like the neural and haemal canals,” said Kurt, who had dabbled in biology.    From Wordnik.com.  [The War in the Air] Reference