What is the process of the temporal bone?

There is an anterior projection from the squamous part of the temporal bone, the zygomatic process. This is located on the lower portion of the squamous part. It initially projects laterally, then turns to pass anteriorly to articulate with the temporal process of the zygomatic bone to form the zygomatic arch.

What are the three processes of the temporal bone?

This lesson will explore the processes of the temporal bone: the zygomatic process, the mastoid process and the styloid process.

How many processes does the temporal bone have?

The temporal bone is ossified from eight centers, exclusive of those for the internal ear and the tympanic ossicles: one for the squama including the zygomatic process, one for the tympanic part, four for the petrous and mastoid parts, and two for the styloid process.

What is Postglenoid tubercle?

Medical Definition of postglenoid : situated behind the glenoid fossa postglenoid tubercle.

What is mastoid process of temporal bone?

The mastoid process is located posterior and inferior to the ear canal, lateral to the styloid process, and appears as a conical or pyramidal projection. It forms a bony prominence behind and below the ear. It has variable size and form (e.g. it is larger in the male than in the female).

What is the temporal process of the zygomatic bone?

The zygomatic process of the temporal bone is a long, arched process projecting from the lower part of the squamous portion of the temporal bone. It articulates with the zygomatic bone.

Where is the Postglenoid process?

temporal bone
The process of the temporal bone separating the mandibular fossa from the external acoustic meatus.

What is the condyloid process?

The condyloid process or condylar process is the process on the human mandible and some other species’ mandibles that ends in a condyle, the mandibular condyle. It is thicker than the coronoid process of the mandible and consists of two portions: the condyle and the constricted portion which supports it, the neck.

What is mastoid process used for?

The mastoid process’ main function is to provide an area of attachment to several important muscles in the head. For instance, it is the attachment site of certain muscles of the neck: Sternocleidomastoid muscle – enables the rotation of the head to the contralateral side.

What is a Mastoidectomy procedure?

A mastoidectomy is surgery to remove cells in the hollow, air-filled spaces in the skull behind the ear within the mastoid bone. These cells are called mastoid air cells.

What are the processes of zygomatic bone?

Zygomatic bone

Definition	A quadrangular bone of the skull that participates in the formation of the skeletal framework of the orbit and cheeks
Processes	Frontal process, temporal process, maxillary process
Foramina	Zygomaticotemporal foramen, zygomatico-orbital foramen, zygomaticofacial foramen

What is the Retrodiscal pad in the TMJ?

The highly vascular retrodiscal pad attaches the articular disc of the temporomandibular joint to osseous structures posterior to it. There is debate as to whether or not the pad includes erectile tissue.

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.

Where are the Coronoid and Condyloid processes located?

The coronoid process and condyloid process are located at the superior aspect of the ramus. The coronoid process is anterior and the condyloid process is posterior; the two are separated by the mandibular notch. The ramus is bound by two surfaces and four borders and contains two processes.

What is the Coronoid process of mandible?

In human anatomy, the mandible’s coronoid process (from Greek korone, “like a crow”) is a thin, triangular eminence, which is flattened from side to side and varies in shape and size. Its anterior border is convex and is continuous below with the anterior border of the ramus.

Why is it called mastoid process?

Itis a complex bone, which along with many of its landmarks, features a bulgy prominence called the mastoid process. The mastoid process is easily palpable just behind the ears. It serves for the attachment of many head muscles. Moreover, it contains air-filled spaces called the mastoid air cells.

Is the mastoid process part of the temporal bone?

The mastoid process is a large protuberance in the posterior part of the temporal bone that provides attachment to the occipitalis, posterior auricular, sternocleidomastoid, posterior belly of the digastric, splenius capitis, and longissimus capitis muscles.

Is mastoidectomy major surgery?

How serious is a mastoidectomy? The extensiveness of surgery depends on your unique situation. A simple mastoidectomy will treat disease in your mastoid while leaving your ear canal and middle ear structures completely intact.

What are the three types of mastoidectomy?

Types of mastoidectomy

• Simple mastoidectomy. The lateral wall of the mastoid is removed.
• Canal wall up (closed) mastoidectomy. See the separate article: canal wall up mastoidectomy.
• Canal wall down (open) mastoidectomy.

What is temporal process of zygomatic bone?

Where is the temporal bone located?

The temporal bone is located is unusually shaped and has two main parts: petrous and mastoid. Petrous is a pyramid shape at the base of the skull between the occipital and sphenoid bones. The mastoid part is at the posterior portion of the temporal bone.

Why do we have two temporal and parietal bones?

The temporal and parietal bones are in pairs, one for each side of the skull, and so everybody has two of each. The temporal bones are protective structures and nerves of the ear by enclosing them in bone. What is the temporal bone?

Where is the petrous temporal located?

The petrous temporal is situated between the occipital behind and the squamous temporal in front. It consists of petrous and tympanic parts.