Archive image from page 187 of Cunningham's Text-book of anatomy (1914). Cunningham's Text-book of anatomy cunninghamstextb00cunn Year: 1914 ( 154 OSTEOLOGY. facial foramen) is seen on the lateral surface of the bone; its size and position are very variable. The medial aspect of the bone is distinguished by a curved elevated crest, called the orbital process, which extends medially and backwards, and is confluent laterally with the orbital margin. This process has two surfaces—one anterior, which forms a part of the lateral and lower wall of the orbit, and one posterior, which is directed tow
Archive image from page 187 of Cunningham's Text-book of anatomy (1914). Cunningham's Text-book of anatomy cunninghamstextb00cunn Year: 1914 ( 154 OSTEOLOGY. facial foramen) is seen on the lateral surface of the bone; its size and position are very variable. The medial aspect of the bone is distinguished by a curved elevated crest, called the orbital process, which extends medially and backwards, and is confluent laterally with the orbital margin. This process has two surfaces—one anterior, which forms a part of the lateral and lower wall of the orbit, and one posterior, which is directed towards the temporal fossa above and the infra-temporal fossa below. The free edge of the orbital process is thin and serrated; a little below its middle it is usually interrupted by a non-articular notch, which corresponds to the anterior extremity of the inferior orbital fissure. The part above this articulates with the great wing of the sphenoid, the portion below with the orbital surface of the maxilla. Behind the orbital process the medial surface of the bone is concave from side to side, and extends backwards along the medial aspect of the temporal process and upwards over the posterior half of the medial side of the frontal process, thus entering into the formation of the infra-temporal and temporal fossa? respectively. The orbital surface of the orbital process usually displays the openings of two canals (foramina zygomatico - orbitalia)—one which traverses the bone below the orbital margin and appears on the front of the bone as already described, the other which passes obliquely upwards and laterally through the orbital process and appears in the temporal fossa, to the medial side of the frontal process (foramen zygomaticotemporale). The former transmits the zygomatico-facial branch, the latter the zygomatico-temporal branch of the zygomatic nerve. Just under the orbital margin and a short distance below the zygomatico-frontal sutures there is usually a small tubercl
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