SINUS PETROSUS INFERIOR Meaning and
Definition
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The sinus petrosus inferior, also known as the inferior petrosal sinus, is a term used in anatomy to describe a venous channel located within the human skull. Specifically, the sinus petrosus inferior refers to a dural venous sinus found in the petrous part of the temporal bone, which is situated on the lateral side of the skull.
This particular venous structure collects blood from different areas and then transports it to larger venous sinuses within the skull, such as the sigmoid sinus or the internal jugular vein. The sinus petrosus inferior receives blood from various sources, including the cavernous sinus, the petrosal veins, and the sphenoparietal sinus. The sinus petrosus inferior plays a crucial role in maintaining adequate venous drainage within the skull.
The significance of the sinus petrosus inferior lies in its involvement in certain medical conditions, especially those related to the pituitary gland. In certain diagnostic procedures, such as the inferior petrosal sinus sampling, the sinus petrosus inferior is accessed to measure hormone levels in order to evaluate pituitary disorders. The location of the sinus petrosus inferior within human anatomy also makes it a relevant area of interest for surgical approaches to the pituitary gland or nearby structures.
In summary, the sinus petrosus inferior is a dural venous sinus located in the petrous part of the temporal bone. It acts as an important conduit for venous drainage within the skull and has clinical significance in relation to certain pituitary disorders and surgical interventions.
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Inferior petrosal s., a paired sinus running in the groove on the petro-occipital fissure connecting the cavernous sinus with the bulb of the internal jugular vein.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.
Common Misspellings for SINUS PETROSUS INFERIOR
