Straight sinus

Looks like

A channel running straight back along the line where the brain's dividing fold meets the tent over the cerebellum.

What it does

Carries blood from deep brain veins to the confluence of sinuses.

Keeping it well

A clot here can affect deep brain structures: sudden confusion, drowsiness or severe headache needs emergency care.

Related conditions

• Chronic venous insufficiency
• Clotting disorders (thrombophilia & APS)
• Deep vein thrombosis
• Varicose veins