Occipital vein

Structure

The occipital vein is part of the scalp. It begins as a plexus at the posterior aspect of the scalp from the external occipital protuberance and superior nuchal line to the back part of the vertex of the skull. It pierces the cranial attachment of the trapezius and, dipping into the venous plexus of the suboccipital triangle, joins the deep cervical vein and the vertebral vein. Occasionally it follows the course of the occipital artery, and ends in the internal jugular vein. Alternatively, it joins the posterior auricular vein, and ends in the external jugular vein.

The parietal emissary vein connects it with the superior sagittal sinus. As the occipital vein passes across the mastoid portion of the temporal bone, it usually receives the mastoid emissary vein, which connects it with the sigmoid sinus. The occipital diploic vein sometimes joins it.

Function

The occipital vein drains blood from part of the scalp.

Additional images

Image:Gray568.png|Sagittal section of the skull, showing the sinuses of the dura.

References

References

1. Wang, Yajuan. (2009). "Micro-Acupuncture in Practice". [[Churchill Livingstone]].
2. Falk, Dean. (1986). "Evolution of cranial blood drainage in hominids: Enlarged occipital/marginal sinuses and emissary foramina". [[American Journal of Physical Anthropology]].
3. (1 April 2017). "The mastoid emissary vein: an anatomic study with magnetic resonance imaging". [[Surgical and Radiologic Anatomy]].