straight sinus
Noun: 1. A specific venous sinus of the brain: The straight sinus is an unpaired (single, midline) dural venous sinus. It is a channel within the dura mater (the tough outermost membrane covering the brain) that drains deoxygenated blood from deep within the brain back toward the heart.
The term "straight sinus" is used exclusively in anatomical and medical contexts to describe this specific vascular structure. - The straight sinus receives blood from the great cerebral vein and the inferior sagittal sinus. - Imaging revealed a potential thrombosis in the straight sinus.
- Anatomical Relationships: The straight sinus is often described in relation to other structures. It runs along the line of attachment between the falx cerebri and the tentorium cerebelli, two folds of the dura mater.
- The straight sinus courses along the junction of the falx cerebri and tentorium cerebelli.
- Sinus rectus: The Latin equivalent term.
- Dural venous sinus: The general category of structures to which the straight sinus belongs. Other examples include the superior sagittal sinus and transverse sinus.
- Confluence of sinuses: A point where several dural sinuses, including often the straight sinus, meet.
- Sinus rectus (Latin anatomical term)
This is a highly specialized anatomical term with a single, precise meaning. It does not have idiomatic or colloquial uses. The "straight" in its name refers to its generally linear, non-curving course, not to a concept of honesty or directness.
- an unpaired sinus of the dura mater