What does masttoidism mean? Where is it on the body?

The mastoid process, or mastoid bone, is a cone-shaped protrusion on the temporal bone on either side of the head. The mastoid bone can be easily felt from behind the ears of adults, but the mastoid bone is not as fully developed as in adults in small children.

The mastoid process is located posteriorly and inferiorly to the tympanic cavity and contains a number of air chambers of varying sizes, each of which communicates with each other and with the tympanic sinus between the tympanic chambers. Development begins after birth, and by the age of 4 to 6 years, the development of the air chambers of the entire mastoid process is complete.

The mastoid process you are talking about is the identification of traces in the public security criminal investigation, it is the fingerprint of the finger, and the fingerprint of the finger is divided into several types, of which the mastoid is one of the positions on the finger, and the shape of each person's finger fingerprint is different.

The mastoid process is one of the anatomical structures of the human skull, which is a part of the temporal bone of the skull, one on the left and one on the left, and the mastoid process is called the mastoid process because of its conical protrusion at the back and lower part of the temporal bone scales. There are many small holes on the lateral surface of the mastoid process that are important anatomical landmarks for access to the tympanic sinus during mastoid surgery. There are many small air-containing cavities in the bone of the normal mastoid area called the mastoid air chamber, and the upper air chamber is the largest called the tympanic sinus, which communicates with the tympanic cavity.

The mastoid process, tympanic sinus, and tympanic cavity are all middle ears, and if there is a bacterial infection of the mucosa in these parts that causes purulent inflammation, it is collectively called purulent otitis media. The parietal wall of the mastoid cavity is a sigmoid sinus, and injury to the sigmoid sinus during mastoid surgery can cause severe bleeding or air embolism. Cholesteatoma middle ear mastoiditis causes bone destruction at the base of the skull, can cause intracranial infection, or can cause sigmoid sinus thrombophlebitis that can be life-threatening.

The mastoid process, anatomical term, is a conical protrusion that protrudes from the underside of the mastoid part of the temporal bone, palpable on the surface of the body, behind the external auditory canal and outside the styloid process.

The mastoid process is a protrusion that originates from the underside of the mastoid part of the temporal bone and is roughly tapered or conical in shape.

The mastoid process is rough on the outside and has muscles attached to it. The cavity in it is a lot of small air-containing cavities, that is, the mastoid air chamber.

The size of the mastoid process varies and is generally larger in males than in females.

The mastoid process is formed after birth, is absent or rudimentary during the neonatal period, and develops due to the pull of the sternocleidomastoid muscle.

According to the degree of development of the air chamber, the mastoid process can be divided into four types:

Pneumatic type accounts for 80%, the air chamber is well developed, the air compartment is very thin, and the outer layer of the mastoid process is also thin; The gasification type can be divided into 2 types: partial gasification of the mastida, the mastoid has several chambers or air sinuses 5cm2; Fully vaporized mastoid with air chamber 6 cm2.

Diploetic type, the air chamber is small and numerous, the air compartment is thicker, and the outer bone is thicker, which is similar to the plate barrier structure of the skull.

Sclerotic type, undeveloped air chambers, dense bones.

Mixed type, any two or three of the above types coexist.

Mastoid process A mastoid process is located posteriorly and inferiorly to the tympanic cavity and contains many air chambers of varying sizes, each of which communicates with each other and the tympanic sinus between the tympanic chambers.

The mastoid is located at the back of the ear, at the flat back of the earlobe, 1 finger away, you can feel the lowest protrusion of a bone, it is the mastoid process, and if there is inflammation, there is tenderness

He said she didn't let people speak.

Cholesteatoma otitis media surgery from the ** surgery, is the surgery big.

Answer] :d temporal bone is located on both sides of the skull and extends to the base of the skull, and participates in the construction of the socks to form the base of the skull and the lateral part of the cranial cavity, with an irregular shape, which can be divided into three parts: temporal scale, tympanum and petrosal part as the center of the outer auricular hila, and is connected with the parietal bone, occipital bone and sphenoid bone around it. It is composed of scales, tympanics, papillae, petrosals and styloids.

The temporal bone is embedded between the sphenoid, parietal and occipital bones, and participates in the formation of the middle and posterior cranial fossa, and is closely related to many important neurovascular vessels in the brain and skull.