Haemal arch

A haemal arch is a bony arch on the underside of a tail vertebra of a vertebrate.

The hole so formed is the haemal canal.

It sometimes has a haemal spine on.

The blood vessels to and from the tail run through the arch.

References

S. N. Prasad; Vasantika Kashyap (1 January 1989). A Textbook of Vertebrate Zoology. New Age International. p. 97. ISBN 978-0-85226-928-2.

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