A portion of the lateral venous sinus, bulging prominently into the mastoid cavity, that serves as a principal conduit by which blood leaves the cranium[EPIC]. The sigmoid is drained by the internal jugular vein. [ http://en.wikipedia.org/wiki/Sigmoid_sinus http://palaeos.com/vertebrates/glossary/glossaryS.html ]

This is just here as a test because I lose it

Term information

database cross reference
Subsets

human_reference_atlas

has related synonym

sulcus sigmoideus

id

UBERON:0005475