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Volume 72 (1995 - 199･･･
- Issue 6 Pages 285-
- Issue 5 Pages 235-
- Issue 4 Pages 185-
- Issue 2-3 Pages 51-
- Issue 1 Pages 1-
Predecessor
Volume 72, Issue 1
Displaying 1-6 of 6 articles from this issue
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Iwao SATO, Kazuyuki SHIMADA, Hiromitsu EZURE, Hirohito OMATA, Takayuki ...1995 Volume 72 Issue 1 Pages 1-6
Published: May 20, 1995
Released on J-STAGE: September 24, 2012
JOURNAL FREE ACCESSLaryngeal muscles, namely, the cricothyroid (CT), lateral crico-arytenoid (LCA), thyrio-arytenoid (TA), posterior crio-arytenoid (PCA), interarytenoid (IA) muscles, of Japanese monkeys (body weight,4.4-8.3 kg; 3-10 years old, male) were examined histologically and by light and scanning electron microscopy. The diameter of muscle fibres with nerve terminals in the CT of the Japanese monkey was larger than that of other laryngeal muscles. However, the areas of nerve terminals varied among laryngeal muscles. The mean diameters of nerve terminals of the CT and PCA were large and basically resembled those of other laryngeal muscles. They contribute mainly to maintenance of phonation which the adductor muscles contribute mainly to postural adjustments of the cartilage. The differences in features of nerve terminals of each muscle suggest the CT and PCA may contribute mainly to the frequency or pitch of voice and intensity of the voice during vocalization and to respiration.View full abstractDownload PDF (1930K) -
Hisao NAMBU1995 Volume 72 Issue 1 Pages 7-12
Published: May 20, 1995
Released on J-STAGE: September 24, 2012
JOURNAL FREE ACCESSVariations in the numbers of phalangeal bones in the fingers (I to IV) and toes (I to V) of specimens of Hynobius tenuis collected from two localities (Ashikuraji and Arimine) in Toyama Prefecture, Central Japan, were recorded. In the case of fingers of fore limbs, eight phalangeal formulas were distinguished, and in the case of toes of hind limbs, ten phalangeal formulas were recogpized. In the fingers of specimens from Ashikuraji, the predominant formulas were 2-2-3-2 (40%) and 2-2-3-1 (32%). In specimens from Arimine,2-2-3-2 was predominant (75%). In toes, the predominant formula was 2-2-3-2-0- (96%) for Ashikuraji and 71% for Arimine. The maximal number of phalangeal bones,2-2-3-3-2, found in the toes of specimens from Arimine seems to represent the fundamental formula in hynobiid salamanders. The predominant formula,2-2-3-2-0-, observed in the two populations may have been derived from the fundamental formula by degeneration of the phalangeal bones in the fourth and the fifth toes. The reason why phalangeal bones were degenerated in this species is discussed from an ecological viewpoint of body growth.View full abstractDownload PDF (1237K) -
Keiichi MORIGUCHI, Mitsuji YAMAMOTO, Taimei ASANO, Taizo SHIBATA1995 Volume 72 Issue 1 Pages 13-28
Published: May 20, 1995
Released on J-STAGE: September 24, 2012
JOURNAL FREE ACCESSPeroxidase (PO) activity-positive cells were found to develop in both the sublingual and submandibular glands of the rat on day 19 of gestation. The PO activity in the nuclear envelope (NE), endoplasmic reticulum (ER), Golgi apparatus (G) and secretory granules (SG) of these cells were enhanced day by day. However, no PO activity was detected in the parotid gland on the same day. In the parotid gland PO-positive cells were detected first on postnatal day 1. After birth the PO activity in the SG of both the sublingual and submandibular glands gradually diminished in intensity and disappeared, whereas the activity persisted in the parotid gland. From postnatal day 1 to 14, the NE and ER of the cells in the parotid and sublingual glands exhibited intense PO activity, while cells containing mucous SG appeared. The cells were identified as mucoserous acinar cells. These mucoserous cells later differentiated into different cell types: serous cells in the parotid gland and mucous cells in the sublingual gland. As the submandibular gland developed, PO activity-positive serous cells also differentiated into mucoserous cells and the activity in the G and SG disappeared. The parotid, sublingual and submandibular glands of perinatal rats have clearly showed varied growth, with the advent processes of PO activity and cell differentiation, whereas PO activity in the G concomitantly occurred with SG activity.View full abstractDownload PDF (5464K) -
Keiichi AKITA, Hitoshi YAMAMOTO1995 Volume 72 Issue 1 Pages 29-35
Published: May 20, 1995
Released on J-STAGE: September 24, 2012
JOURNAL FREE ACCESSIn order to investigate the dorsoventral relationship between the sacral plexus and the pudendal nerve in man, morphological examination was performed on one pelvic half of a male cadaver. The second and third spinal nerves were removed en bloc and sectioned serially for three-dimensional reconstruction imaging of the selected sections. Comparison of the sequential images revealed that the root of the pudendal nerve is first situated ventral to the caudal root of the sacral plexus, and that the former and the latteView full abstractDownload PDF (2208K) -
Thomas KOPPE, Olav RÖHRER-ERTL, Dietbert HAHN, Ralf REIKE, Hirosh ...1995 Volume 72 Issue 1 Pages 37-43
Published: May 20, 1995
Released on J-STAGE: September 24, 2012
JOURNAL FREE ACCESSThe postnatal growth of the maxillary sinus was analyzed in 20 male and 20 female skulls of orang-utan (Pongo satyrus borneensis) in 5 age steps. Coronal CT scans were carried out of all skulls using a computed tomograph Siemens SOMATOM DR. The distances between the CT scans were always 4 mm. The outline of the maxillary sinus was surrounded on the CT scans with a planimeter and then the volumes were calculated. Using a growth model introduced by Fanghariel (1974), growth functions for the volume measurements for male anf female animals were calculated separately. The growth curves showed a particular course, which was characterized by a quick rise until the age of 15 years. After the age of 20years the curves for females orang-utan became gradually flat. At the age of 21 to 23 years the confidence intervals of the growth curves for male and female orang-utan began to drift apart, indicating the appearance of a sexual dimorphism. Using the basicranial length as an indicator of skull size, it becomes evident, that the sexual difference in the maxillary sinus' volume is probably based on the fact, that the maxillary sinus' volume of the male orang-utan increases further on following a common growth pattern.View full abstractDownload PDF (1877K) -
D. R. JOHNSON, M. Y. KIDA1995 Volume 72 Issue 1 Pages 45-49
Published: May 20, 1995
Released on J-STAGE: September 24, 2012
JOURNAL FREE ACCESSThe bony spinous process of T2 in certain inbred strains of the mouse is variable in size or in some cases absent. The development of this process has been investigated in histological sections of CBA, C57BL and tk/tk mice between birth and 14 days. The spinous process is shown to be modified in shape and size late in development.View full abstractDownload PDF (1505K)
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