Petrosal
Petrosal
Petrosal (pronunciation: peh-troh-sal) is a term used in anatomy to refer to structures related to the petrous part of the temporal bone in the skull. The term is derived from the Latin petrosus, meaning "rocky", which is a reference to the hard, dense nature of the petrous bone.
Anatomy
The petrosal bone is part of the temporal bone and houses the inner ear. It is one of the densest bones in the human body. There are several structures that are referred to as petrosal, including:
- Petrosal nerve: A nerve that arises from the glossopharyngeal nerve and provides sensory innervation to the middle ear, mastoid air cells, and Eustachian tube.
- Petrosal sinus: A dural venous sinus that drains blood from the cerebellum and brainstem into the internal jugular vein.
- Petrosal process: A bony projection of the sphenoid bone that articulates with the petrous part of the temporal bone.
Related Terms
- Petrositis: Inflammation of the petrous part of the temporal bone, often secondary to otitis media or mastoiditis.
- Petrosectomy: Surgical removal of the petrous part of the temporal bone, usually performed to treat conditions such as cholesteatoma or neoplasms of the temporal bone.
See Also
External links
- Medical encyclopedia article on Petrosal
- Wikipedia's article - Petrosal
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