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Inferior Sagittal Sinus
Cardiovascular System

Inferior Sagittal Sinus

Sinus sagittalis inferior

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Quick Facts

Origin: Forms within the free edge of falx cerebrum by confluence of veins draining the falx cerebrum.

Course: Runs in the lower free margin of the falx cerebri, superior to the corpus callosum.

Tributaries: From the falx cerebrum and from medial surface of cerebral hemispheres.

Drainage: Deeper medial surface of cerebral hemispheres.

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Origin

The inferior sagittal sinus is formed within the lower edge of the falx cerebrum, by the confluence of numerous small veins draining the falx cerebrum.

Course

The inferior sagittal sinus runs in the inferior free margin of the falx cerebrum and joins posteriorly with the great cerebral vein of Galen to form the straight sinus.

Tributaries

The inferior sagittal sinus receives tributaries from the falx cerebri, and some small veins from the medial surface of the cerebral hemispheres.

Structures Drained

The inferior sagittal sinus drains the deeper medial surface of cerebral hemispheres and drains the venous blood into the straight sinus.

Learn more about this topic from other Elsevier products

Inferior Sagittal Sinus

ScienceDirect image

The inferior sagittal sinus is a part of the superior group of dural venous sinuses, and as a member of the superficial cerebral venous system, it drains the superficial surfaces of both cerebral hemispheres.

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