Is articular eminence same as tubercle?

The articular eminence is that part of the temporal fossa over which the condyle-disk complex slides during the various mandibular movements. It is often confused with the articular tubercle, which is an entirely different structure.

What does articular fossa and eminence of temporal bone articulate with?

Articular disc – The articular disc is a fibrous extension of the capsule that runs between the two articular surfaces of the temporomandibular joint. The disc articulates with the mandibular fossa of the temporal bone above and the condyle of the mandible below.

What is the articular fossa of temporal bone?

temporal fossa an area on the side of the cranium bounded posteriorly and superiorly by the temporal lines, anteriorly by the frontal and zygomatic bones, and laterally by the zygomatic arch, lodging the temporal muscle.

What is eminence in dentistry?

The word “articular” means that this structure is part of a movable joint. The term “eminence,” when concerning anatomy, means an elevation or projection.

What is the shape of eminence?

The box shape represents a larger articular eminence or a deeper articular fossa than sigmoid shapes, while the sigmoid shape represents a larger articular eminence or a deeper articular fossa than flattened shapes.

What is articular fossa?

Introduction. The glenoid fossa, located at the inferior aspect of the squamous part of temporal bone, is composed of the glenoid fossa and articular eminence of the temporal bone. It is sometimes described as the temporal component of the temporomandibular joint (TMJ).

Why Is TMJ called Ginglymoarthrodial joint?

Each temporomandibular joint is classed as a “ginglymoarthrodial” joint since it is both a ginglymus (hinging joint) and an arthrodial (sliding) joint. The condyle of the mandible articulates with the temporal bone in the mandibular fossa.

What is articular tubercle of temporal bone?

The articular tubercle (eminentia articularis) is a bony eminence on the temporal bone in the skull. It is a rounded eminence of the anterior root of the posterior end of the outer surface of the squama temporalis.

What is articular disc?

The articular disc is a somewhat oval body of fibrous tissue, which is convex on its upper surface to accommodate itself to the shape of the articular fossa and concave on its inferior surface to conform to the head of the mandible.

Where is the articular eminence of temporal bone?

Anatomical terms of bone The articular tubercle (eminentia articularis) is a bony eminence on the temporal bone in the skull. It is a rounded eminence of the anterior root of the posterior end of the outer surface of the squama temporalis.

Where is articular fossa?

The fossa is located behind the zygomatic process of the frontal bone in the anterior and lateral part of the orbital roof.

What is the articular tubercle of temporal bone?