Sigmoid sinus
Sinus sigmoideus
Definition
The sigmoid sinus is a paired dural venous sinus located in the caudal part of the cranial cavity. In the dog, it courses in an S-shaped path along the dorsomedial aspect of the petrous part of the temporal bone and passes through the jugular foramen toward the tympano-occipital fissure. It receives venous blood mainly from the cerebellum and brainstem.
References
Evans HE, de Lahunta A. Miller’s anatomy of the dog, 4th edition, Elsevier Saunders, St Louis, 2012.
