Occipital emissary vein

Occipital emissary vein is a vein that connects the extracranial venous system with the intracranial venous system. It is a part of the human circulatory system and plays a crucial role in the drainage of the blood from the brain.

Etymology

The term "occipital" is derived from the Latin word "occiput" which means "back of the skull". "Emissary" is derived from the Latin word "emissarius" which means "sent out". The term "vein" is derived from the Latin word "vena" which means "blood vessel".

Anatomy

The occipital emissary vein begins at the occipital bone at the back of the skull and travels through the occipital foramen to connect with the superior sagittal sinus, a large venous channel found within the dura mater of the brain.

Function

The primary function of the occipital emissary vein is to drain blood from the posterior part of the scalp to the sinus in the dura mater. It also plays a role in the regulation of intracranial pressure.

Clinical significance

The occipital emissary vein can be a potential route for the spread of infection from the scalp to the intracranial structures. It can also be involved in certain pathological conditions such as cerebral venous sinus thrombosis.

Related terms

• Emissary vein
• Occipital bone
• Superior sagittal sinus
• Dura mater
• Cerebral venous sinus thrombosis