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The infraorbital foramen is used as a pressure point to test the sensitivity of the infraorbital nerve. [2] Palpation of the infraorbital foramen during an extraoral examination or an administration of a local anesthetic agent will cause soreness to the area.
The infraorbital nerve is a branch of the maxillary nerve (itself a branch of the trigeminal nerve (CN V)). [1] It arises in the pterygopalatine fossa . It passes through the inferior orbital fissure to enter the orbit. [ 2 ]
Intervertebral foramen, foramina formed between vertebrae; Lesser sciatic foramen, an opening between the pelvis and the posterior thigh; Obturator foramen, the opening created by the ischium and pubis bones of the pelvis; Vertebral foramen, the foramen formed by the anterior segment (the body), and the posterior part, the vertebral arch
The infraorbital groove (or sulcus) is located in the middle of the posterior part of the orbital surface of the maxilla. Its function is to act as the passage of the infraorbital artery , the infraorbital vein , and the infraorbital nerve .
The nerves arise from the trunk of [citation needed] the maxillary nerve (CN V 2) within the pterygopalatine fossa [1]: 496 just before it enters the infraorbital groove. [ citation needed ] The nerve arises as a single trunk which split into 2-3 nerves within the pterygopalatine fossa.
The deep branches pass beneath the zygomaticus and the quadratus labii superioris, supplying them and forming an infraorbital plexus with the infraorbital branch of the maxillary nerve. These branches also supply the small muscles of the nose .
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Infraorbital is an anatomical term which means, literally, inferior to (below or beneath) the eye socket . Some examples of uses of the term are: Infraorbital artery; Infraorbital foramen; Infraorbital canal; Infraorbital groove