18 january 2009 through Assoc Prof open minded GaillardRadium Supporter due to the fact that November 30, 2020"> ◉Verified member the sponsoring organizations Royal Melbourne Hospital and University that Melbourne (Masters the Radiology)"> ◈
The mandible is the solitary midline bone the the reduced jaw. It consists of a curved, horizontal portion, the body, and two perpendicular portions, the rami, i beg your pardon unite with the ends of the body almost at right angles (angle the the jaw). The articulates with both temporal bones at the mandibular fossa in ~ the temporomandibular joints (TMJ). It bear the lower tooth bearing alveolar process.
You are watching: Which bone bears the mandibular fossa?
The human body of the mandible is curved, somewhat choose a horseshoe, v two surfaces and also two borders. The mandibular symphysis is situated in the midline, a point of fusion. The parasymphysis extends native the midline to past the canine.external surfacemidline ridge denote the symphysisinternal surfaceconcave native side-to-sidesuperior (or alveolar) borderwider behind 보다 in fronthollowed because that reception of this (normally 16)inferior borderrounded, much longer than the exceptional border and thicker in front 보다 behindgroove because that the face artery may be current at the allude it joins the ramus the the mandibleRamus
The ramus is square in shape, and also has two surfaces, four borders, and two processes and also one canal:external (or lateral) surfaceinner (or medial) surfacemandibular foramen: opening of the mandibular canal, i beg your pardon transmit the worse alveolar vessels and also nervelower borderthick, straight and consistent with the inferior border that the human body of the mandibleposterior borderangle the the mandible is at its junction of the posterior border and the bodyanterior borderthin over and more thick below; constant with the tilt lineupper borderthinconsists the the coronoid procedure anteriorly and also the condylar process posteriorly be separate by the mandibular notch (a.k.a. Sigmoid notch)
The mandibular canal runs obliquely downward and also forward in the ramus, and also then horizontally forward in the body, whereby it is inserted under the alveoli and also communicates with them by small openings.
See more: What Is The Chemical Formula For Aluminum Bromide (Albr3), Aluminum Bromide: Chemical Formula, Symbol & Uses
On showing up at the incisor teeth, it turns ago to communicate with the psychological foramen, providing off two little canals which run to the caries containing the incisor teeth. It contains the worse alveolar vessels and nerve, from which branches are distributed to the teeth via the incisive nerve.
Please refer to our post on condylar procedure of the mandible for a specific discussion.