The straight sinus is a major venous channel located in the brain. It is part of the dural venous sinuses, which are responsible for draining blood from the brain. The straight sinus runs along the junction of the falx cerebri and the tentorium cerebelli, collecting blood from the great cerebral vein and draining into the transverse sinuses. This sinus plays a crucial role in the brain's venous drainage system. It helps maintain proper blood flow and pressure within the cranial cavity. Any obstruction or thrombosis in the straight sinus can lead to serious complications, including increased intracranial pressure and potential neurological deficits.