Inferior sagittal sinus
Sinus sagittalis inferior
Definition
The inferior sagittal sinus (sinus sagittalis inferior; inferior longitudinal sinus) is contained in the posterior half or two-thirds of the free margin of the falx cerebri. It is of a cylindrical form, increases in size as it passes backward, and ends in the straight sinus.
It receives several veins from the falx cerebri, and occasionally a few from the medial surfaces of the hemispheres.
References
This definition incorporates text from a public domain edition of Gray's Anatomy (20th U.S. edition of Gray's Anatomy of the Human Body, published in 1918 – from http://www.bartleby.com/107/).