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The pterygomaxillary fissure is a fissure of the human skull.It is vertical, and descends at right angles from the medial end of the inferior orbital fissure.It is a triangular interval, formed by the divergence of the maxilla from the pterygoid process of the sphenoid.
The nerves exit the pterygopalatine fossa through the pterygomaxillary fissure.They pass within or upon the posterior wall of the maxilla. [1]: 496 They descend on the tuberosity of the maxilla and give off several twigs to the gums and neighboring parts of the mucous membrane of the cheek.
It is connected to the pterygopalatine fossa through the pterygomaxillary fissure. It is connected to the orbit through the inferior orbital fissure. It is also connected to the parapharyngeal space. The inferior orbital fissure and the pterygomaxillary fissure form a T shape together.
It is the indented area medial to the pterygomaxillary fissure leading into the sphenopalatine foramen. It communicates with the nasal and oral cavities, infratemporal fossa, orbit, pharynx, and middle cranial fossa through eight foramina .
pterygomaxillary fissure: Ptm: Point at base of fissure where anterior and posterior wall meet. Anterior wall represents posterior surface of maxillary tuberosity: registration point: A reference point for superimposition of ceph tracings sella (that is, sella turcica) S: Midpoint of sella turcica: sphenoethmoidal suture: SE
The spheno-maxillary fossa is a small triangular space situated at the angle of the junction of the sphenomaxillary fissure and the pterygomaxillary fissure beneath the apex of the orbit. It is formed above by the under surface of the body of the sphenoid and by the orbital process of the palate bone.
In neuroanatomy, the maxillary nerve (V 2) is one of the three branches or divisions of the trigeminal nerve, the fifth (CN V) cranial nerve.It comprises the principal functions of sensation from the maxilla, nasal cavity, sinuses, the palate and subsequently that of the mid-face, [1] and is intermediate, both in position and size, between the ophthalmic nerve and the mandibular nerve.
Foramen rotundum. The foramen rotundum is one of the several circular apertures (the foramina) located in the base of the skull, in the anterior and medial part of the sphenoid bone.