Venous plexus of hypoglossal canal

The venous plexus of hypoglossal canal ("TA") – also known as plexus venosus canalis nervi hypoglossi ("TA"), circellus venosus hypoglossi and rete canalis hypoglossi – is a small venous plexus around the hypoglossal nerve that connects with the occipital sinus, the inferior petrosal sinus and the internal jugular vein. Occasionally, it may be a single vein rather than a venous plexus.