| Intercavernous sinuses | |
|---|---|
 Dural veins | |
 The sinuses at the base of the skull. (Visible as light blue circle at center.) | |
| Details | |
| Identifiers | |
| Latin | sini intercavernosi |
| TA98 | A12.3.05.117 |
| TA2 | 4862 |
| FMA | 50773 |
| Anatomical terminology | |
The intercavernous sinuses are two in number, an anterior and a posterior, and connect the two cavernous sinuses[1] across the middle line.
The anterior passes in front of the hypophysis cerebri (pituitary gland), the posterior behind it, and they form with the cavernous sinuses a venous circle (circular sinus) around the hypophysis.
The anterior one is usually the larger of the two, and one or other is occasionally absent.