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Volume 34 (1959 - 196･･･
- Issue 6 Pages 517-
- Issue 4-5 Pages 299-
- Issue 3 Pages 177-
- Issue 2 Pages 85-
- Issue 1 Pages 1-
Predecessor
Volume 34, Issue 4-5
Displaying 1-8 of 8 articles from this issue
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Hiroshi Hanai, Yoshio Ohtani, Hidekazu Sawa, Issei Fujiwara1960 Volume 34 Issue 4-5 Pages 299-321
Published: 1960
Released on J-STAGE: September 24, 2012
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VIII. On the parotid ductal system in some mammalsYoshio Ohtani1960 Volume 34 Issue 4-5 Pages 323-352
Published: 1960
Released on J-STAGE: September 24, 2012
JOURNAL FREE ACCESSStudies on the ductal system of s a livary glands have been done through variable methods, as described in the preface. Especially of the form, divergency and course of the intralobular ductal system, and even the terminal lumen, however, there are many lacked definitenesses. Succeeding in making corrosion specimens of even the terminals of 2μ on the parotid, their detailed observations, comparing with injected sections, are carried out.
Different from the blood vessel system, the glandular ductal system ends blindly. Zimmermann ('27) says that artificial escapement might be produced, or satisfactory injection can not be done, if secretions much remain in terminal lumina. For clearing up to what extent of deformations of the lumen or producing artificial routes may be brought about by the injection, the author Parotid Ductal System in Some Mammals 333makes observations on resin injected sections of the cattle's submandibular gland with larger and brighter lumina and clearer border of the lumen, on which he can not count in the parotid. And now it can be confirmed that the specimens show some almost physiological swelling, constriction or prominence. Sometimes, especially in the finest portions, destruction of the lumen and artificial products are seen, but minute comparative observations of sections or casts give a right judgement. Accordingly, with all these specimens it is not always possible to get ideal results, yet it is believed that natural features of lumina filled up are shown in most cases, except some swelling by the injection pressure. Now, observations by the author are summarized and discussed with previous scholars' works.View full abstractDownload PDF (6476K) -
Yoshiaki Yamamoto1960 Volume 34 Issue 4-5 Pages 353-381_3
Published: 1960
Released on J-STAGE: September 24, 2012
JOURNAL FREE ACCESSThyroid glands of lower v e rtebrates including several species of birds, reptiles, amphibians and fishes were histologically investigated and the data obtained were discussed by comparing with the data known of mammalian thyroid glands.
1. The thyroid glands of lower vertebrates are composed of independent, separated closed epithelial sacsfollicleswhich are generally round to oval and larger in the periphery than in the center.
2. Follicles of the embryonic or maturing thyroid glands are often associated with each other by direct connection of their walls without open communication of their cavities, and form follicle groups. This may suggest the proliferation, present and past, of follicles through budding process.
3. It was difficult to f i nd any significant difference in follicles in relation to sex and season. The follicles are generally small in birds such as crows, pigeons, domestic fowls, swallows and sparrows. On the other hand, the follicles are considerably large in Chelonia and snakes. The follicles of lizards are small. The follicles of amphibians and small fishes are also small. It is supposed that the size of follicles may depend partly upon the body weight and length of animals used.View full abstractDownload PDF (5077K) -
Kenjiro Yasuda, Kazuyoshi Kobayashi, Osamu Saeki1960 Volume 34 Issue 4-5 Pages 389-417
Published: 1960
Released on J-STAGE: September 24, 2012
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Kinziro Kubota, Junko Kubota, Jiro Kuroe1960 Volume 34 Issue 4-5 Pages 419-447
Published: 1960
Released on J-STAGE: September 24, 2012
JOURNAL FREE ACCESSIn the present paper the p roblem of the dentin innervation was reinvestigated and discussed chiefly in relation to the progress of the odontogenesis, and the following points should be emphasized.
1) The so-called Raschkow's nerve plexus in the pulp appears to be formed there by the mechanism that the nerve fibers supplying the layer under the odontoblasts are pushed back toward the pulpal tissue by the scrum wall of the odontoblasts which move toward the pulp in the process of the odontogenesis.
2) The innervation of the layer of odontoblasts may take place in such a way that when the scrum wall of the odontoblasts becomes emaciated and loosened at the last period of odontogenesis, some of the nerve fibers enter the layer of odontoblasts through the loose intercellular spaces.
3) The t a ngential arrangement of nerve fibers in the predentin may be explained by the mechanism that when the nerve fibers come to the predentin-odontoblastic junction through the odontoblastic layer, they are obliged, because of their probable anti-tro pic nature against the bone and bone-like tissue, to change the direction in order to avoid and escape from the predentin.
4) The predentin innervation maybe understood by two mechanisms that 1) the nerve fibers in the junction are embedded into the predentin in the later period of the odontogenesis in situ and that 2) the fine fibrils ramifying from the nerve fibers in the junction extend into the predentinal tubules along Tomes' fibers for a short distance.
5) The dentin is partially innervated in the sense that the nerve fibers in the predentin are embedded into the calcified dentin matrix in the later period of the odontogenesis. It is very questionable whether or not the nerve fibers embedded in the dentin matrix are kept in physiological or intact conditions. The authors would like to consider that the nerve fibers are undergoing degeneration in the matrix, but this problem should be settled by further studies.View full abstractDownload PDF (11599K) -
Kazumaro Yamada, Masao Sano1960 Volume 34 Issue 4-5 Pages 449-475
Published: 1960
Released on J-STAGE: September 24, 2012
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Shinji Matsumoto, Masanobu Yoshida, Umeo Tateno1960 Volume 34 Issue 4-5 Pages 477-507
Published: 1960
Released on J-STAGE: September 24, 2012
JOURNAL FREE ACCESSThe authors examined the s weat glands in the facial region, the upper extremity and the palm from the cytological and cytochemical view-points, and obtained the following conclusions.
1) On the activity of alkaline pho s p hatase: In the apocrine sweat glandular duct the activity is intensive at the portion that faces the cavity of the glandular cells. The activity gets weak in order of the myoepithelial cells, karyoplasm and cytoplasm. In the eccrine sweat glandular ducts, the activity is extremely intensive at the base of the glandular cells, and in order of the portion that faces the cavity of the glandular cells, karyoplasm, cytoplasm of the basal cell and cytoplasm of the superficial cell, the activity is weak. In conclusion, as for noticeable differences in the activity between the apocrine and eccrine sweat glands, the portion that faces the cavity of the glandular cells, the base of the cells and the A Cytochemical Investigation on the Sweat Glands of the Monkey 493myoepithelial cells attract special attention. Moreover, the portion that faces the cavity of the glandular cells in the eccrine sweat glandular ducts in the hairy transitional region of the palm shows a medium activity, on the other hand that portion in the eccrine sweat glandular ducts in the palm shows a weak activity. Not any activity is observed in the excretory ducts of the apocrine and eccrine sweat glands.View full abstractDownload PDF (14842K) -
Masahiko Kotani1960 Volume 34 Issue 4-5 Pages 509-515
Published: 1960
Released on J-STAGE: September 24, 2012
JOURNAL FREE ACCESSIndia ink particles injected into the pericardial cavity of the toad were absorbed into the lymphatic capillaries in the epi- and pericardium as in the case of the rabbit, directly, first mainly throug h the intercellular spaces between adjacent mesothelial cells of the serosa, then through the network of the argyrophil fibrils in the meshes of the loosely arranged, branched collagenous fibers in the submesothelial areolar tissue and finally through the intercellular spaces between adjacent lymphatic mesothelial cells.View full abstractDownload PDF (4444K)
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