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Volume 37 (1961)
- Issue 6 Pages 389-
- Issue 4-5 Pages 271-
- Issue 3 Pages 183-
- Issue 2 Pages 105-
- Issue 1 Pages 1-
Predecessor
Volume 37, Issue 2
Displaying 1-6 of 6 articles from this issue
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Takeshi Hoshino1961 Volume 37 Issue 2 Pages 105-121
Published: 1961
Released on J-STAGE: September 24, 2012
JOURNAL FREE ACCESS1. Histogenesis of the epithelium, of the small intestine of Bu, fo vulgaris japonicus from the time of hatching to the end of meta morphosis was studied with reference to tissue iron. 2. At the time of hatching the midgut runs caudalwards at the dorsal portion of the yolk cell mass. The S-shaped small in t e stine develops from the midgut at 3-4 days after hatching. At first the intestinal lumen is occluded by the blended yolk cel l s, but soon is recanalized through absorption of the yolk platel e ts. 3. In the wall of the small intestine the yolk cells undergo active mitotic division and differentiate into a layer of columnar cells at 5-7 days after hatching. The columnar cells contain la r ge amounts of yolk platelets which appear to possess some crystalline structures. The small intestine becomes gradually elo n gated untill it aquires 3 1/2 coils at the beginning of the secon d week. Its columnar epithelial cells are provided, on the surface, with the striated border. In the intestinal epithelium goblet cells and. basal cells are discernible a mong the columnar cells. 4. During the period of metamorphosis,7 weeks after hatching, most of the epithelial cells undergo degeneration and t h e small intestine becomes markedly reduced in length and diameter. The basal cells and some of the columnar cells divide through mitosis and form cell massesregeneration nidiwhich a ppear as giant cells. These masses first form cyst-like cell groups. The neighbouring ones are connected to each other, so that the definite epithelium is formed. 5. Tissue iron occurs in the form of masked iron in the yolk platelets during development of the larval intestine. After absorption of the yolk, the reaction becomes negative. No readily demonstrable iron is detected. The validity of the available histochemical methods for masked iron is discussed.View full abstractDownload PDF (861K) -
Iwao Yasui, Kinji Suzuki1961 Volume 37 Issue 2 Pages 123-145
Published: 1961
Released on J-STAGE: September 24, 2012
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Tatsuya Kaga, Takeichiro Goto, Tatsuyuki Ieta1961 Volume 37 Issue 2 Pages 147-158
Published: 1961
Released on J-STAGE: September 24, 2012
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Ritsukuni Tsubouchi1961 Volume 37 Issue 2 Pages 161-168
Published: 1961
Released on J-STAGE: September 24, 2012
JOURNAL FREE ACCESSThe subcutaneous veins i n Macacus cyclopsis consist of numerous venous networks and the following venous systems which drain these networks. I. Anterior chest 1) The veins in the Regio hypochondriaca which converge to the upper lateral part enter the V. thoracalis superficialis lateralis. 2) In the Regio mammalis, there is the formation of the Plexus venosus areoralis with communication with the veins in the Regio infraculaviclaris. The veins which converge to the upper medial part from the V. thoracalis superficialis medialis which perforates the second to fourth intercostal space at the sternal border. There rarely is a vein which corresponds to the V. abdominomammalis of man that begins in the upper abdomen, ascends to the vicinity of the breasts or higher and perforates the third to fourth intercostal space at the sternal border. The veins in the lower and lateral parts converge and form the V. thoracalis superficialis lateralis which ascends along the lower edge of the M. pectoralis mojor and enters the V. axillaris usually at the level of the fifth intercostal space. 3) The veins in the Regio infraclavicularis communicate with those in the Regio mammalis and in addition enter the V. jugularis externa. II. Anterior abdomen The venous network in the area above the umbilicus converge to form the Vv. epigastricae superficiales superiores which usually are three in number. They ascend to the Regio epigastrica or higher and perforate the intercostal space to the deep veins. Some anastomose with the V. thoracalis lateralis and enter the V. axillaris. Those in the lower abdomen form the V. epigastrica superfici alis inferior which descends and most often opens into the V. circumflexa ilium superficialis but occasionally unites with the Vv. thoracoepigastricae. In addition, there is the presence of the Vv. pudendae externae in the lower abdominal region which mainly enters the V. epigastrica superficialis inferior. III. Lateral chest and abdomen The veins from the venous network in this area are in general collected by the veins of the anterior chest and abdomen, but occasionally the Vv. thoraco-epigasticae are formed. These veins are connected with the V. axillaris above while below they run lateral to the Vv. epigastricae superficiales to 'enter into the V. femoralis, but in half of the cases the lower part directly unites with the V. circumflexa ilium superficialis.View full abstractDownload PDF (298K) -
Simoon Byon1961 Volume 37 Issue 2 Pages 169-174
Published: 1961
Released on J-STAGE: September 24, 2012
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Simoon Byon1961 Volume 37 Issue 2 Pages 175-182
Published: 1961
Released on J-STAGE: September 24, 2012
JOURNAL FREE ACCESSDownload PDF (280K)
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