[Plate 109, Basal Nuclei (Ganglia)]
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page 70
Sinus Location Comment Drains to
Superior
sagittal sinus
Upper border falx cerebri 1. Drains cerebral veins
- Contains arachnoid villi and granulations for
reabsorption CSF
Confluence of sinuses
Inferior sagittal
sinus
Lower free margin falx cerebri Joins great cerebral vein
forming straight sinus
Straight sinus Junction falx cerebri and
tentorium cerebelli
Formed by union great cerebral vein with inferior sagittal
sinus
Confluence of sinuses
Transverse
sinus
Lateral margin tentorium
cerebelli
- Passes laterally from confluence of sinuses
- Left is usually larger
Sigmoid sinus
Sigmoid sinusS-shaped course in temporal
and occipital bones
Continuation transverse sinus Internal jugular vein
Cavernous
sinus
Superior surface of body of
sphenoid, lateral to sella
turcica
- Receives superior and inferior ophthalmic and
superficial middle cerebral veins and sphenoparietal
sinus
- Contains internal carotid artery and CN III, IV, V1, and
VI, sympathetic nerves
Superior and inferior
petrosal sinuses
Intercavernous
sinus
Runs through sella turcica Connects cavernous sinuses
Superior
petrosal sinus
Margin tentorium cerebelli
attached to petrous temporal
bone
Connects cavernous sinus to transverse sinus Transverse sinus
Inferior
petrosal sinus
Medial border petrous temporal
bone to jugular foramen
Connect cavernous sinus to internal jugular vein Internal jugular vein
CSF
Maintains balance of extracellular fluid in the brain
Similar in content to blood
