Petrous part
Petrous part
The Petrous part (pronunciation: /ˈpɛtrəs/), also known as the Petrous portion or Petrous pyramid, is a part of the Temporal bone in the Human skull. The term "petrous" comes from the Latin word "petrosus", meaning "rocky", due to the hard, dense nature of the bone.
Anatomy
The Petrous part is pyramid-shaped and is wedged in at the base of the skull between the Sphenoid and Occipital bones. It houses the structures of the Inner ear, including the Cochlea and Vestibular system, which are responsible for hearing and balance, respectively.
Clinical significance
Due to its location and the structures it houses, diseases or injuries affecting the Petrous part can lead to conditions such as Hearing loss, Vertigo, and Facial paralysis. It is also a key area of interest in Temporal bone surgery and Radiology.
Related terms
- Temporal bone
- Inner ear
- Cochlea
- Vestibular system
- Sphenoid
- Occipital bone
- Hearing loss
- Vertigo
- Facial paralysis
- Temporal bone surgery
- Radiology
External links
- Medical encyclopedia article on Petrous part
- Wikipedia's article - Petrous part
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