山溪鲵头部肌肉大体解剖

Anatomy of Head Muscles of Batrachuperus pinchonii

通过染色、解剖、观察和绘图对山溪鲵头部肌肉做了详细描述。山溪鲵头部肌肉包括头侧肌肉、头腹肌肉、眼部肌肉及喉部肌肉。其肌肉组成与有尾类头部肌肉的一般构成基本一致。从第二鳃弓游离端内侧发出一细条状肌纤维,附着在三角骨外侧末端,此种情况在以前其他有尾类肌肉系统研究中未见报道。

The head muscles of Batrachuperus pinchonii were studied by staining. The morphology of the muscles was described in detail. The results show that the head muscles include the lateral muscles, ventral muscles, muscles of eyes and laryngeal muscles. Lateral muscles mainly control the elevation and depression of the mandible and consisted of M. levator mandible anterior, M. levator mandible exterior, M. depressor mandible anterior, and M. depressor mandible posterior. Ventral muscles mainly control the extension and contraction of the mouth. They are composed of M. genioglossus, M. intermandibularis posterior, M. interhyoideus, M. interhyoideus posterior, M. geniohyoideus, M. subhyoideus, M. subracualis rectus I, M. rectus cervicis superficialis, M. rectus cervicis profundus, and M. omohyoideus. A weak, spatulate muscle arises from the inner side of the distal end of the arcus branchialis II and inserts on the very end of the os triangulare laterally. This is a unique character, which hasn＇t been reported yet. There are 8 muscles around the eyes. They are M. levator bulbi, M. rectus superior, M. rectus anterior, M. rectus inferior, M. rectus posterior, M. obliquus superior, M. obliquus inferior, and M. retractor bulbi. Laryngeal muscles were M. cephalo-dorso-sub-pharyngeus, M. dilatators laryngis, and M. constrictor laryngis.