The Glaserian artery fissure, also known as the petrotympanic fissure, is a small opening located in the temporal bone of the skull. The spelling of this word can be explained using phonetic transcription. "Glaserian" is pronounced /ˈɡleɪzəriən/, with the stress on the second syllable. "Artery" is pronounced /ˈɑːtəri/, and "fissure" is pronounced /ˈfɪʃər/. Correct spelling of the word can be important in the medical field, as it allows for clear communication and understanding among healthcare professionals.
Glaserian artery fissure refers to a narrow, anatomical passageway located in the sphenoid bone of the skull, specifically in the region known as the pterygopalatine fossa. It is named after the Austrian anatomist and surgeon Ernst Glaser who first described this structure. The Glaserian artery fissure serves as a canal through which an important blood vessel, known as the descending palatine artery, travels.
The descending palatine artery is a branch of the maxillary artery, a major blood vessel originating from the external carotid artery. This artery supplies blood to various structures within the head and neck region. As it passes through the Glaserian artery fissure, it gives off branches that provide vascularization to the hard palate, soft palate, and the nasal cavity.
The Glaserian artery fissure is a small bony canal that runs vertically downwards and medially from the pterygopalatine fossa. It is surrounded by various structures, including nerves and other blood vessels, which act as a protective cushion for the arteries passing through. This fissure is an important landmark for surgeons and anatomists when performing procedures in the region, as they must be cautious to avoid damage to the descending palatine artery and its branches.
In summary, the Glaserian artery fissure is a narrow bony passageway in the sphenoid bone that allows the descending palatine artery to travel through, providing blood supply to the hard palate, soft palate, and nasal cavity.
Fissura petrotympanica.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.