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sigmoid sinus
(redirected from Sigmoid sinuses)

   Also found in: Medical, Wikipedia 0.01 sec.
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Noun1.sigmoid sinus - an S-shaped dural sinus on the temporal and occipital bones
venous sinus, sinus - a wide channel containing blood; does not have the coating of an ordinary blood vessel


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This type has numerous other sinus such as the inferior sagittal sinus, straight sinus, superior sagittal sinus, occipital sinus and the transverse sinuses, sigmoid sinuses as well as the superior petrosal sinus and inferior petrosal sinus.
Magnetic resonance imaging (MRI) showed hyperintensity in the right lateral and sigmoid sinuses.
Another pair of venous chennels, known as the transverse and sigmoid sinuses, fans out across the back of the cranium in gracile and Homo species, Falk points out.
 
 
 
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