グラーザー裂
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出典(authority):フリー百科事典『ウィキペディア（Wikipedia）』「2016/10/18 15:25:17」(JST)
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| Petrotympanic fissure |
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Left temporal bone. Outer surface. (Petrotympanic fissure is labeled at left, fourth from top.)
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The right membrana tympani with the hammer and the chorda tympani, viewed from within, from behind, and from above. (Glaserian fissure labeled at center left.)
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| Details |
| Identifiers |
| Latin |
Fissura petrotympanica |
| TA |
A02.1.06.074 |
| FMA |
55463 |
| Anatomical terms of bone
[edit on Wikidata]
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The petrotympanic fissure (also known as the squamotympanic fissure or the glaserian fissure) is a fissure in the temporal bone[1] that runs from the temporomandibular joint to the tympanic cavity.[2]
The mandibular fossa is bounded, in front, by the articular tubercle; behind, by the tympanic part of the bone, which separates it from the external acoustic meatus; it is divided into two parts by a narrow slit, the petrotympanic fissure.
It opens just above and in front of the ring of bone into which the tympanic membrane is inserted; in this situation it is a mere slit about 2 mm. in length. It lodges the anterior process and anterior ligament of the malleus, and gives passage to the anterior tympanic branch of the internal maxillary artery.
Contents
- 1 Eponym
- 2 Contents
- 3 Additional Images
- 4 See also
- 5 References
- 6 External links
Eponym
It is also known as the "Glaserian fissure", after Johann Glaser.[3]
Contents
The contents of the fissure include communications of cranial nerve VII to the infratemporal fossa. A branch of cranial nerve VII, the chorda tympani, runs through the fissure to join with the lingual nerve providing special sensory (taste) innervation to the tongue.
Additional Images
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Base of the skull. Arrows indicate petrotympanic fissure.
See also
- Chorda tympani
- Petrosquamous suture
References
This article incorporates text in the public domain from the 20th edition of Gray's Anatomy (1918)
- ^ Petrotympanic+fissure at eMedicine Dictionary
- ^ Eckerdal O (1991). "The petrotympanic fissure: a link connecting the tympanic cavity and the temporomandibular joint". Cranio. 9 (1): 15–22. PMID 1843474.
- ^ "Glaserian fissure". Medcyclopaedia. Retrieved 2008-03-07. [dead link]
External links
- Anatomy figure: 30:06-09 at Human Anatomy Online, SUNY Downstate Medical Center
- Anatomy photo:30:os-0108 at the SUNY Downstate Medical Center
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The neurocranium of the skull
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| Occipital |
| Squamous part |
- external
- Inion/External occipital protuberance
- External occipital crest
- Nuchal lines
- planes
- internal
- Cruciform eminence
- Internal occipital protuberance
- Sagittal sulcus
- Internal occipital crest
- Groove for transverse sinus
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| Lateral parts |
- Condyle
- Condyloid fossa
- Condylar canal
- Hypoglossal canal
- jugular
- Jugular process
- Jugular tubercle
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| Basilar part |
- Pharyngeal tubercle
- Clivus
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| Other |
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| Parietal |
- Parietal eminence
- Temporal line
- Parietal foramen
- Sagittal sulcus
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| Frontal |
| Squamous part |
- Frontal suture
- Frontal eminence
- external
- Superciliary arches
- Glabella
- foramina
- Zygomatic process
- internal
- Sagittal sulcus
- Frontal crest
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| Orbital part |
- Ethmoidal notch
- Fossa for lacrimal gland
- Trochlear fovea
- Frontal sinus
- Frontonasal duct
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| Temporal |
| Squamous part |
- Articular tubercle
- Suprameatal triangle
- Mandibular fossa
- Petrotympanic fissure
- Zygomatic process
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| Mastoid part |
- Mastoid foramen
- Mastoid process (Mastoid cells)
- Mastoid notch
- Occipital groove
- Sigmoid sulcus
- Mastoid antrum (Aditus)
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| Petrous part |
- Carotid canal
- Facial canal
- Internal auditory meatus
- Cochlear aqueduct
- Stylomastoid foramen
- fossae
- Subarcuate fossa
- Jugular fossa
- canaliculi
- Inferior tympanic
- Mastoid
- Styloid process
- Petrosquamous suture
- (note: ossicles in petrous part, but not part of temporal bone)
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| Tympanic part |
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| Sphenoid |
| Surfaces |
- Superior surface: Sella turcica
- Dorsum sellae
- Tuberculum sellae
- Hypophysial fossa
- Posterior clinoid processes
- Ethmoidal spine
- Chiasmatic groove
- Middle clinoid process
- Petrosal process
- Clivus
- Lateral surface: Carotid groove
- Sphenoidal lingula
- Anterior surface: Sphenoidal sinuses
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| Great wings |
- foramina
- Rotundum
- Ovale
- Vesalii
- Spinosum
- Spine
- Infratemporal crest
- Sulcus of auditory tube
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| Small wings |
- Superior orbital fissure
- Anterior clinoid process
- Optic canal
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Pterygoid
processes |
- fossae
- pterygoid plates
- Pterygoid canal
- Hamulus
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| Other |
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| Ethmoid |
| Plates |
- Cribriform plate
- Crista galli
- Olfactory foramina
- Perpendicular plate
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| Surfaces |
- Lateral surface Orbital lamina
- Uncinate process
- Medial surface Supreme nasal concha
- Superior nasal concha
- Superior meatus
- Middle nasal concha
- Middle meatus
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| Labyrinth |
- Ethmoid sinus
- ethmoidal foramina
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Foramina of the skull (and canals, fissures, meatus, and hiatus)
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| Anterior cranial fossa |
| to Orbit: |
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| to Nasal cavity: |
- olfactory foramina (CN-I)
- foramen cecum
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| Middle cranial fossa |
| to Orbit: |
- optic canal (CN-II)
- superior orbital fissure (CN-III,IV,V1,VI)
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| to Pterygopalatine fossa: |
- foramen rotundum (CN-V2)
- pterygoid canal
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| to Infratemporal fossa: |
- foramen ovale (CN-V3)
- foramen spinosum/carotid canal
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| other: |
- foramen lacerum
- hiatus for greater petrosal nerve
- hiatus for lesser petrosal nerve
- sphenoidal emissary foramen
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| Posterior cranial fossa |
- internal auditory meatus/facial canal/stylomastoid foramen (CN-VII,VIII)
- jugular foramen (CN-IX,X,XI)
- foramen magnum (CN-XI)
- hypoglossal canal (CN-XII)
- condylar canal
- mastoid foramen
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| Orbit |
| to Nasal cavity: |
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| to face: |
- supraorbital
- infraorbital
- zygomatic foramen
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| to Pterygopalatine fossa: |
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| other: |
- Inferior orbital fissure
- Fossa for lacrimal sac
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| Pterygopalatine fossa |
| to Nasal cavity: |
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| to Oral cavity: |
- greater palatine canal
- lesser palatine canals
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| to Infratemporal fossa: |
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| to Nasopharynx: |
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| to oral cavity: |
- incisive canals
- incisive foramen
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| to nasal cavity: |
- Foramen vomerinum
- Meatus vomerinus
- Fissura vomerina
- Hiatus vomerinus
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| Other |
- external acoustic meatus
- mandibular foramen
- mental foramen
- parietal foramen
- petrotympanic fissure
- semilunar hiatus
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Related Links
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- Fissura petrotympanica information including symptoms, causes, diseases, symptoms, treatments, and other medical and health issues. ... Introduction: Fissura petrotympanica Description of Fissura petrotympanica Fissura ...
★リンクテーブル★
[★]
- 英
- petrotympanic fissure (N)
- ラ
- fissura petrotympanica
- 同
- グラーザー裂 glaserian fissure
- 関
- 錐体鼓室裂