Connection lost. Please refresh the page.
Get help How to study Login Register
Ready to learn?
Pick your favorite study tool

Inferior sagittal sinus

Recommended video: Inferior sagittal sinus [02:42]
Definition, location and tributaries of the inferior sagittal sinus.
Inferior sagittal sinus (Sinus sagittalis inferior)

The inferior sagittal sinus is a dural venous sinus found within the inferior, free margin of the falx cerebri (a fold of dura mater). This sinus collects the blood from the falx and often from the medial surfaces of the brain hemispheres.

The inferior sagittal sinus ends at the intersection of the falx cerebri and tentorium cerebelli. Here, it joins the great cerebral vein (of Galen) to form the straight sinus.

This article will discuss the anatomy and function of the inferior sagittal sinus.

Key facts about the inferior sagittal sinus
Tributaries Veins of falx cerebri, anterior pericallosal vein
Drains to Straight sinus
Drainage area Falx cerebri, medial surfaces of cerebral hemispheres
  1. Anatomy and course
  2. Sources
+ Show all

Anatomy and course

The inferior sagittal sinus runs through the doubled folded margin of the falx cerebri, occupying the posterior two-thirds of the falx. It extends as far as the tentorium cerebelli, where it opens into the straight sinus.

The inferior sagittal sinus increases in size as it courses posteriorly towards the falx. It receives two groups of tributaries:

  • Small veins that drain the falx
  • Anterior pericallosal veins that drain the medial surfaces of the cerebral hemispheres.

Master the anatomy of the dural venous sinuses using the videos, articles, illustrations and quizzes in the following study units:

Inferior sagittal sinus: want to learn more about it?

Our engaging videos, interactive quizzes, in-depth articles and HD atlas are here to get you top results faster.

What do you prefer to learn with?

“I would honestly say that Kenhub cut my study time in half.” – Read more.

Kim Bengochea Kim Bengochea, Regis University, Denver
© Unless stated otherwise, all content, including illustrations are exclusive property of Kenhub GmbH, and are protected by German and international copyright laws. All rights reserved.

Register now and grab your free ultimate anatomy study guide!