The M. temporalis of the Formosan Monkey
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概要
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1. The M. temporalis of Macaca cyclopis can be subdivided into the superficial layer which is located on top of the internal tendon (united tendon); the pars anterior located anterior and lateral to this and which arises at the level of the sutura frontozygomatica and inserts tendinously into the linea obliqua lateral's of the ramus man- dibulae; and the deep part beneath the internal tendon (united tendon) including the deepest part which arises by tendon from the crista infratemporalis.<BR>2. The so-called M. maxillomandibularis in the classification of Toldt et al. could not be separated in Macaca cyclopis. However, the pars anterior in my classification may perhaps correspond to the socalled M. maxillomandibularis of Rodentia. Further, the muscle which Yoshikawa et al. have considered independently as the M. zygomaticomandibularis could not be separated in Macaca cyclopis, and was included as part of the pars anterior.<BR>3. The nerve supply to the M. temporalis was by the N. temporails profundus. There were, however, two patterns of nerve supply to the pars anterior of the M. temporalis superficialis. In other words, besides the usual nerve supply by the N. temporalis profundus anterior, a branch of the N. massetericus which supplied rami to the M. masseter profundissimus was found to penetrate further and enter into this part. of the muscle in about half of the cases examined. There was, however, no case of nerve supply by only the N. massetericus.<BR>Consequently, it is presumed that this part originally had been formed by elements from the M. temporalis, but in some cases elements from the M. masseter had contributed to its structure.<BR>4. This muscle was found to be most closely related to the M. masseter profundissimus with which there is fusion and union.
- Keio Universityの論文
Keio University | 論文
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