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Volume 81 (2004)
- Issue 6 Pages 119-
- Issue 5 Pages 85-
- Issue 4 Pages 57-
- Issue 2.3 Pages 33-
- Issue 1 Pages 1-
Predecessor
Volume 81, Issue 5
Displaying 1-5 of 5 articles from this issue
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Akira IIMURA, Masahiro ITOH, Hayato TERAYAMA, Yoichi NAKAMURA, Gu HE, ...2004 Volume 81 Issue 5 Pages 85-92
Published: 2004
Released on J-STAGE: January 18, 2008
JOURNAL FREE ACCESSIn recent years, partial laryngectomy and partial reconstruction are increasingly intended for conservation of functions of phonation and swallowing. In partial reconstruction, it is important to comprehend morphological characteristics of the blood vessels distributed in the larynx, but there have been only few reports discussing detailed information about them. Previous reports on laryngeal blood vessels have shown that branches of some arteries show remarkable "meandering". In the present study, we devised a method for objectively determining the morphological nature, "meandering" and assessed functions of the arteries. Intralaryngeal arteries were excised from the larynx of cadavers prepared for practice in anatomy, and images of the "meandering" artery were analyzed with NIH Image. The extent of "meandering" was expressed mainly as the ratio of the total length of the blood vessel to the distance between the starting point and the end point of meandering. The results showed that there was a significant difference in the extent of meandering between superior posterior and medial posterior branches of superior laryngeal artery. These arteries, which were distributed in the arytenoid region, were found to be of primary importance in partial laryngectomy and partial reconstruction of the larynx.View full abstractDownload PDF (319K) -
Hirohiko KAKIZAKI, Masahiro ZAKO, Takashi NAKANO, Ken ASAMOTO, Osamu M ...2004 Volume 81 Issue 5 Pages 93-96
Published: 2004
Released on J-STAGE: January 18, 2008
JOURNAL FREE ACCESSThis study was performed to elucidate whether the raphe of the orbicularis oculi muscle (raphe) exists or not. Nine upper eyelids of 6 Oriental cadavers with ages at death ranging from 72 to 91 years were dissected; 6 for gross dissections and 3 for histological slice sections. After removing the lateral half of the eyelid skin, the lateral part of the orbicularis oculi muscle and its subjacent tissue were observed macroscopically. The full layered tissue of the 8 mm lateral part from the orbital rim was incised perpendicularly and sections sliced, which were then observed microscopically after staining with the hematoxylin and eosin. The raphe was not identified macroscopically or microscopically. The lateral part of the orbicularis oculi muscle was continuous without the tendinous intercalation; under it, fibrous connective tissue corresponding to the lateral orbital thickening was observed, and in which the band configuration, microscopically the tendinous structure, was formed. The raphe was not identified. The physiological role of the lateral part of the orbicularis oculi muscle is maintained by a less tight attachment of the lateral orbital thickening, but not by the raphe.View full abstractDownload PDF (214K) -
Hirohiko KAKIZAKI, Masahiro ZAKO, Takashi NAKANO, Ken ASAMOTO, Toshiak ...2004 Volume 81 Issue 5 Pages 97-100
Published: 2004
Released on J-STAGE: January 18, 2008
JOURNAL FREE ACCESSThis study was performed to elucidate the ligamentous structures in the lower eyelid other than the Lockwood ligament. Ten lower eyelids (right 5, left 5) of 5 Oriental post-mortems were dissected. The orbital septum was incised along the orbital rim, and then turned over toward the eyelid margin. The orbital fat was exposed and removed as much as possible without injuring the ligamentous structures. The ligamentous structures in the lower eyelid were then investigated macroscopically. There were two other ligaments in the lower eyelid in addition to the Lockwood ligament. All three ligaments originated from the posterior lacrimal crest, but went in different directions. The superior ligament ran on the junction of the orbital septum and the capsulopalpebral fascia, and in the lateral area, it ran on the posterior aspect of the orbital septum and attached to the periosteum of the lateral orbital rim. The inferior ligament went toward the posterior aspect of the inferior oblique muscle after separating from the Lockwood ligament. Ligaments other than the Lockwood ligament were revealed in the lower eyelid. These ligaments are thought to reinforce the fragility of the lower eyelid.View full abstractDownload PDF (103K) -
Rui FURUTANI, Tetsuya IZAWA, Shoei SUGITA2004 Volume 81 Issue 5 Pages 101-108
Published: 2004
Released on J-STAGE: January 18, 2008
JOURNAL FREE ACCESSThe distribution of the facial neurons that innervate several facial muscles was determined in the rabbit and the rat by examining the retrograde transport of horseradish peroxidase (HRP). The target muscles were musculus levator nasolabialis, m. levator labii superioris, m. zygomaticus, and m. buccinator pars buccalis, as well as m. parietoauricularis and m. depressor anguli oris in the rabbit and m. levator auricularis posterioris in the rat. Localization of the retrogradely labeled neurons within the ipsilateral facial nucleus was confirmed for all facial muscles examined. Our results showed that m. levator nasolabialis was innervated by neurons located in the dorsal subnucleus, while the motoneurons innervating m. buccinator pars buccalis were distributed within the dorsal part of the intermediate subnucleus of the facial nucleus in the both species. Localization of the labeled motoneurons innervating m. zygomaticus and m. levator labii superioris showed the difference in the distribution within the facial nucleus among the species. Neurons innervating m. parietoauricularis and m. levator auricularis posterioris were localized in somewhat different subregions of the medial subnucleus in these species. M. depressor anguli oris was innervated by the neurons distributed within the intermediate subnucleus of the facial nucleus in the rabbit. Thus, our findings revealed that there is speciesspecific motor innervation pattern in rabbits and rats, despite several movement of the face is supplied by the homologous facial muscles.View full abstractDownload PDF (202K) -
Rui FURUTANI, Shoei SUGITA2004 Volume 81 Issue 5 Pages 109-118
Published: 2004
Released on J-STAGE: January 18, 2008
JOURNAL FREE ACCESSThe auricular muscles correspond to the group of facial muscles that allows the auricle to move freely. The shape of the auricle and the location of the muscles on the head differs among species. The rabbit has eight auricular muscles that are innervated by motoneurons originating from the facial nucleus located on the ventral side of the medulla oblongata. However, the distribution within the facial nucleus of the motoneurons that innervate each auricular muscle has not been defined clearly. In the present study, retrograde transport of horseradish peroxidase was used to identify groups of facial motoneurons in the rabbit. Our results show that the medial subnucleus of the facial nucleus projects primarily to the auricular muscles, and that each auricular muscle is innervated by a specific group of motoneurons distributed in a particular region of the medial subnucleus. This motoneuron patterning appears to be a species-specific characteristic of the innervation of the auricular muscles.View full abstractDownload PDF (394K)
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