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Volume 69 (1992 - 199･･･
- Issue 6 Pages 253-
- Issue 5 Pages 199-
- Issue 4 Pages 145-
- Issue 2-3 Pages 77-
- Issue 1 Pages 1-
Predecessor
Volume 69, Issue 2-3
Displaying 1-9 of 9 articles from this issue
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Hideki OUKOUCHI, Takuro MURAKAMI, Akio KIKUTA1992 Volume 69 Issue 2-3 Pages 77-83
Published: August 20, 1992
Released on J-STAGE: September 24, 2012
JOURNAL FREE ACCESSThe lumbrical and interosseous muscles in twenty-five feet of Japanese adult cadavers were dissected. The lumbrical muscles mainly continued into the dorsal aponeuroses or the terminal tendons of the extensor digitorum longus muscle, though they occassionally issued some accessory and slender tendons inserting into the bases of the proximal phalanges. Rarely, the lumbrical muscle showed an atavistic anomaly. In this anomaly, the lumbrical muscle was divided into two tails which continued into the bases of the proximal phalanges of the contiguous toes. The plantar and dorsal interosseous muscles were mainly attached to the bases of the proximal phalanges. Frequently, the plantar and dorsal interosseous muscles issued some accessory and small tendons continuing into the dorsal aponeuroses. This fact suggests that the plantar and dorsal interosseous muscles in the foot, like the palmar and dorsal interosseous muscles in the hand, are composite muscles derived from the flexor brevis, contrahens and other muscles.View full abstractDownload PDF (2248K) -
Hidetoshi TOH, Jun KODAMA, Masatoshi YANAGISAKO, Tadao OHMORI1992 Volume 69 Issue 2-3 Pages 85-88
Published: August 20, 1992
Released on J-STAGE: September 24, 2012
JOURNAL FREE ACCESSWe examined the range of the accessory mental foramen [AMF] and its accessory mental nerve in three Japanese cadavers. The diameters of the AMF were relatively small: 0.74 mm,0.80 mm and 0.89 mm. The distances between the mental foramen and AMF were: 0.67 mm,2.1mm and 5.74 mm. The distribution of the accessory mental nerve was different in the three cases. These nerves communicated with the branches of the facial and buccal nerves.View full abstractDownload PDF (1507K) -
Eijiro NAKAMURA, Shogo MASUMI, Masahiro MIURA, Seiji KATO, Ryosuke MIY ...1992 Volume 69 Issue 2-3 Pages 89-98
Published: August 20, 1992
Released on J-STAGE: September 24, 2012
JOURNAL FREE ACCESSIn order to elucidate the nerve supply of a supernumerary muscle observed between the adductors brevis and minimus in humans and to investigate its true nature and mechanism of formation,100 body halves from 50 adult Japanese cadavers were subjected to gross anatomical examination. A supernumerary muscle was noted in 33 (33.0%) out of the 100 thighs. In each of these thighs, it arose from the upper part of the inferior ramus of the pubis and ran obliquely downwards and laterally. It was inserted into the anterior surface of the insertion aponeurosis of the adductor minimus (17/33 thighs,51.5%), the upper part of the pectineal line (9/33thighs,27.3%), or the posterior side of the base of the lesser trochanter (7/33 thighs,21.2%). It was supplied, from its posterior aspect, by a filament from the twig originating from the posterior branch of the obturator nerve and being distributed to the superficial fasciculus of the obturator externus (18/33 thighs,54.5%) or by a twig directly originating from the posterior branch (15/33 thighs,45.5%). The obturator nerve received fibers from L1234 (4/33 thighs), L234(25/33 thighs), L2345 (2/33 thighs) or L34 (2/33 thighs) and, moreover, its posterior branch ran through (25/33 thighs,75.8%) or over (8/33 thighs,24.3%) the obturator externus to emerge into the thigh. Based on the topographical-anatomical relationships of this muscle to its nerve supply, it seems probable that it is formed by separation from the superficial layer of the obturator externus and changes into an independent structure during the process of ontogeny. Furthermore, from a statistical standpoint, the segmental composition or course of the obturator nerve is not related to either the formation or incidence of this muscle.View full abstractDownload PDF (4210K) -
Isamu TAKAGI, Kazuyoshi SAKAI, Masatoshi HIRATA, Keiki YAMADA1992 Volume 69 Issue 2-3 Pages 99-104
Published: August 20, 1992
Released on J-STAGE: September 24, 2012
JOURNAL FREE ACCESSParafollicular cells, Thyroid gland, Immunohistochemistry, Suncus murinus Summary: A morphological study of parafollicular cells in the thyroid gland and parathyroid gland of the house shrew (Suncus murinus) was made. The results indicated that (1) there were two pairs of parathyroid glands which were located in the upper part of the house shrew thyroid gland, (2) the volumes of the house shrew parathyroid glands ranged from 0.014to 0.079 mm3, (3) the number of parafollicular cells along the follicles was largest in the upper part of the thyroid lobe, while no parafollicular cells were present in the isthmus, and (4) there were about 20 parafollicular cells per 100 follicular cells and 1.519 parafollicular cells per follicle. The number of parafollicular cells per 100 follicular cells was thus about 5 times larger than that in rats and the number of parafollicular cells per follicle about 2.5 times larger than that in rats.View full abstractDownload PDF (2070K) -
M. Y. KIDA, D. R. JOHNSON, P. O'HIGGINS1992 Volume 69 Issue 2-3 Pages 105-108
Published: August 20, 1992
Released on J-STAGE: September 24, 2012
JOURNAL FREE ACCESSSkeletal variation, Seventh cervical vertebra, Foramen transversarium, Heredity, Mouse Summary: The formation of foramina tansversaria in the seventh cervical vertebra of CBA and C57BL mice and their offspring is found to behave as if it is determined by a single semi-dominant gene. The accessory foramina of Weber (1950) are investigated in the same material. These foramina are classified into two types and their heredity is evaluated.View full abstractDownload PDF (977K) -
Toshio NAKATANI, Harry BEITNER1992 Volume 69 Issue 2-3 Pages 109-114
Published: August 20, 1992
Released on J-STAGE: September 24, 2012
JOURNAL FREE ACCESSMelanosomes in sporadic dysplastic nevi were examined by transmission electron microscope. In particular the structure of macromelansomes was observed. Macromelanosomes were present in both nevus cells and keratinocytes. They were round and consisted of a core structure and a cortex structure. The core was composed of electron-dense amorphous material and electron-lucent microvesicles. The cortex contained grains of different sizes and electron densities. Occasionally small melanosomes were observed in the cortex. Electron-lucent microvesicles were also present in small spherical and ellipsoid melanosomes. Melanosome complexes observed in nevus cells contained degrading melanosomes with electronlucent microvesicles, dispersed microvesicles and grains. Melanosome complexes with structures resembling those found in macromelanosomes were also present. The result of the investigation suggests that melanosome complexes found in nevus cells might become macromelanosomes through autophagy.View full abstractDownload PDF (2267K) -
Masataka SATO, Tooru SATO1992 Volume 69 Issue 2-3 Pages 115-130
Published: August 20, 1992
Released on J-STAGE: September 24, 2012
JOURNAL FREE ACCESSThe purpose of this study was to clarify the relationship myofibrils, mitochondoria and other cytoplasmic organella in the developed lingual muscle (vertical, transverse, and longitudinal) by using various microscopic levels: light, scanning electron, and transmission electron. The tongue muscles were examined in seventeen autopsy specimens: eight,12-32 weeks gestation and ten adults (five male, five female; 54-93 years). The muscle fiber rapidly developed. A large number of mitochondoria and glycogen granules increased and the size of myofibrils in the middle stage also increased, ranging from 24 to 28 weeks gestations. The developed myofibrils were differentiated, the VL and TL at first are developed before the LL developed. These results suggest that the lingual intrinsic muscle have differences in properties during development.View full abstractDownload PDF (9792K) -
Takashi NAKANO1992 Volume 69 Issue 2-3 Pages 131-137
Published: August 20, 1992
Released on J-STAGE: September 24, 2012
JOURNAL FREE ACCESSIn the ventral wall of the mouse laryngopharynx, a fairly large number of the epithelial papillae containing taste bud (provisionally denominated the pharyngeal papillae) were observed. The NaOH cellmaceration method was applied in order to demonstrate the stereo architecture of the connective tissue papillae (CTP) of the pharyngeal papillae. The CTP appeared as a cylindrical wall surrounding a round depression, and consisted of a delicate meshwork of collagen fibrils. It is suggested that the CTP constitute the skeletal framework of the pharyngeal papillae and that the round depression corresponds to the site of taste bud. Furthermore, the collagen fibrillar architecture in the extrapapillary region appeared to be arranged to meet specific functional needs. That is, in the rostral end of the laryngopharynx, the collagen fibrils ran solitarily to form a coarse meshwork and seemed to allow the epithelium a certain degree of freedom of motion in swallowing. On the other hand, in the caudal part the fibrils concentrated into the thick bundles of the fibers running side by side along the long axis of the laryngopharynx and, therefore, appeared to play an important role in resisting the excessive stretching force.View full abstractDownload PDF (3268K) -
Shigeru KOBAYASHI, Hidetoshi TOH, Soichiro TOMO, Tadashi IDEGUCHI, Shi ...1992 Volume 69 Issue 2-3 Pages 139-143
Published: August 20, 1992
Released on J-STAGE: September 24, 2012
JOURNAL FREE ACCESSThe superfacial structures of the tongues in the Manchurian Chipmunk, Tamias sibiricus asiaticus, were observed by scanning electron microscope. The tongues were long, tapering, narrow and thick with a long apical free portion and a small lingual prominence in the posterior half. In this animal, three circumvallate papillae were present in an inverted triangle, a minority of conical papillae on the pharyngeal part and parallel large conical papillae on the lateral border. The fungiform papillae were scanty on the dorsal surface. These characters suggested this animal was more primitive than the others in rodents.View full abstractDownload PDF (2346K)
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