Where is mastoid bone located?
The mastoid is located just behind the ear. Mastoiditis is an infection of the bony air cells in the mastoid bone, located just behind the ear.
What is the mastoid part?
The mastoid part of the temporal bone is the posterior (back) part of the temporal bone, one of the bones of the skull. Its rough surface gives attachment to various muscles (via tendons) and it has openings for blood vessels. From its borders, the mastoid part articulates with two other bones.
Which bones have a mastoid process?
The anterior margin is partly defined by the tympanic part of the temporal bone at the plane of the tympanomastoid suture. The mastoid part is fused anterosuperiorly with the descending process of the squamous temporal bone and medially with the petrous temporal bone 2.
What is the purpose of the mastoid bone?
The mastoid bone, which is full of these air cells, is part of the temporal bone of the skull. The mastoid air cells are thought to protect the delicate structures of the ear, regulate ear pressure and possibly protect the temporal bone during trauma.
Where is the mastoid process located in the body?
The mastoid process anatomy comprises complex structures. It is located behind the ear, and is known as the C1 bone of the spinal vertebral level. The mastoid process bone itself is in the shape of a pyramid that projects behind the temporal bone.
Where is the mastoid part of the temporal bone?
The mastoid part is fused anterosuperiorly with the descending process of the squamous temporal bone and medially with the petrous temporal bone 2. The boundaries of the mastoid part at these sites are imprecisely defined based on the semicircular canals medially and the external auditory canal anteriorly 6,7.
Where does the name mastoid bone come from?
The word “mastoid” is derived from the Greek word for ” breast “, a reference to the shape of this bone. Its outer surface is rough and gives attachment to the occipitalis and posterior auricular muscles.
What happens to the mastoid bone in the ear?
With an ear infection, if the virus invades the mastoid cells, a condition known as mastoiditis may develop. The infection causes severe mastoid process pain and inflammation in the ear. It may also cause reddening of the skin, headaches, and partial hearing loss.