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Friday, 25 October 2019

Bones of the Face

There are 14 facial bones all expect the mandible being United by sutures and immovable.
  Two nasal bones from the bridge of the nose.
 Two Palatine Bones from the roof of the mouth and the floor of the nose.
Two lacrimal bones from the tear ducts and part of the orbit at the inner angle of the eye through which is the fluid from the eye is carried to the nasal cavity.
Two Zygonatic bones from the cheek bones. Process from these bones unit with the zygomatic process of the temporal bones to from the zygomatic arch.
One vomer from the lower part of the bony partition in the nose. ( the upper part of the nasal septum is formed by the perpendicular plate of the ethnicity.)
Two inferior turbinate bones are the larger fear of three projections nasal conchae from the lateral wall of the maxilla.
Two maxilla from the upper jaw and content the upper teeth the body of the maxilla contents a large cavity the maxillary sinus, or antrum of Highmore, which communicates with the nasal cavity by to a small openings.

The mandible


The bones of the face


Monday, 30 September 2019

Air sinuses of the skull

 Several cavities of Chambers are contained in the bones of the skull the frontal maxillary ethmoid and sphenoid sinuses paranasal sinuses which communicated with the nose air sinuses lighten the weight of the skull and give resonance to the voice.
 The frontal sinuses lie in the frontal bone one on is shayari at the route of the nose above the inner angle of the eye the maxillary sinuses sometimes known as antra of highmore lie one inside of the nose in the maxillary bones
Air sinuses

Neonatal skull viewed from above

Neonatal skull viewed from above

Fontanelles

The bone of the Skull of an infant at birth not completely ossified the space between the Bona field in bye membrane and at the angles of the bones these membranes are called Fontanelles the largest of these is situated at the junction of the frontal and the to parietal bone where are the coral sagittal structure meet this is called the interior Fontanelles it is Diamond shape major about force from back to font and forms a soft spot on the head of an infant through which the brain can be felt pulsating this Fontanelle normally closed at the age of 18 months.
The posterior Fontanelle lies at the back at the junction of the two who created and the fetal bone close soon after birth

The Sphenoid Bone scene from the front

The Sphenoid Bone scene from the front