Ridley's sinus -->
intercavernous sinuses
medical dictionary

The anterior and posterior anastomoses between the cavernous sinus's, passing anterior and posterior to the hypophysis and forming, with the cavernous sinuses, the circular sinus.

Synonyms: sinus intercavernosi, Ridley's sinus.

Jugular sinus

Sinus jugularis, one of three enlargements of the jugular veins; the external jugular sinus is between the two sets of valves; the internal jugular sinus's are at the origin (superior bulb) and near the termination (inferior bulb).

(05 Mar 2000)