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Volume 66 (1989 - 199･･･
- Issue 6 Pages 301-
- Issue 5 Pages 229-
- Issue 4 Pages 153-
- Issue 2-3 Pages 61-
- Issue 1 Pages 1-
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Volume 66, Issue 5
Displaying 1-6 of 6 articles from this issue
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Norihisa INUZUKA1989 Volume 66 Issue 5 Pages 229-240
Published: 1989
Released on J-STAGE: September 24, 2012
JOURNAL FREE ACCESSThe scalenus anterior muscle was found to pass behind the left subclavian artery and the first thoracic nerve in a 95-year-old Japanese woman. The scalenus anterior muscle originates from the fifth and sixth cervical vertebrae and inserts on the first rib more dorsal than typical. It is innervated by the fifth and seventh cervical nerves. The muscle belly is thin. The scalenus minimus was not found. The left vertebral artery originates from the aortic arch and enters the transverse foramen of the fifth cervical vertebra. The primary vertebral artery arises from the costocervical artery. The internal thoracic artery originates from the subclavian artery more distally than typical. The axillary artery crosses the brachial plexus between the eighth cervical and first thoracic nerves. Because the first thoracic nerve joins the brachial plexus more distally than usual, the plexus has no typical inferior trunk. Comparative anatomy shows that the muscles, nerves and arteries of the lateral cervical region of the present case maintains primitive characteristics. From the functional viewpoint, the mechanical efficiency of the scalenus anterior muscle is probably lower than usual due to the lower point of origin and the dorsal shift of the insertion.View full abstractDownload PDF (2595K) -
Takashi NAKANO, Yoshie IWAMA, Kaori HASEGAWA, Hiroshi MUTO1989 Volume 66 Issue 5 Pages 241-253
Published: 1989
Released on J-STAGE: September 24, 2012
JOURNAL FREE ACCESSIn the larynx of the Suncus murinus the stratified squamous epithelium lines the tip of the caudal surface of the epiglottis and the region close to the vocal process of the arytenoid cartilage, while the ciliated columnar epithelium is located in the laryngeal sac and the dorsal part of the vocal fold. Further, in the transitional zone between the stratified squamous epithelium and the ciliated columnar one there exists the epithelium which shows gradations ranging from stratified squamous through stratified cuboidal to ciliated stratified low-columnar type. It is suggested that the epithelium lining the transitional zone is identical with the "intermediate epithelium" in the mouse nasopharynx and larynx.View full abstractDownload PDF (3764K) -
Observation on the Basal Lamina of Duodenal Mesothelial Cells During Metamorphosis of Xenopus laevisEiko MURATA, Keiko FUJITA, Masumi AKITA, Katsuji KANEKO1989 Volume 66 Issue 5 Pages 255-263
Published: 1989
Released on J-STAGE: September 24, 2012
JOURNAL FREE ACCESSMorphologic changes in the basal lamina of duodenal mesothelial cells during metamorphosis of Xenopus laevis were observed. In the prometamorphosis stage (Stage 56-59), the basal lamina was almost completely flat; the lamina densa of the basal lamina was a 50 nm layer of high electron density. In the early stages of metamorphic climax (Stage 60-62), the basal lamina showed occasional slight folding (stage 60), with the lapse of time, the folding became continuous and deeper. The development of an additional thin basal lamina was observed in areas where the folded basal lamina was separated from mesothelial cells, viz. on the side adjacent to the mesothelium. The lamina densa in this stage was approximately twice the thickness of the prometamorphosis stage and exhibited high electron density. In the later stages of metamorphic climax (stage 63-66), the basal lamina just under mesothelium became more apparent. The folded basal lamina shifted from the mesothelium into the subserosa and gradually disappeared, and the basal lamina became a single layer. The thickness of the lamina densa was almost the same as in the prometamorphosis stage. Since the timing of the folding of the basal lamina coincides with the shortening of the digestive tract and the marked narrowing of the lumen, we suggest that physical changes in the digestive tract during metamorphosis may play an important role in these morphologic changes of the basal lamina.View full abstractDownload PDF (3147K) -
Y. Hirano, Y. Ogawa, F. Motokizawa1989 Volume 66 Issue 5 Pages 265-269
Published: 1989
Released on J-STAGE: September 24, 2012
JOURNAL FREE ACCESSThe brain weight, sizes (length, width and height) and thickness of cell strata of the olfactory bulb (OB) were measured in the cat weighing 2.3 to 4.8 kg. There was a significant correlation between the brain weight and the body weight. The OB size did not correlate significantly with the body weight, but only the width of the OB with the brain weight. Comparison of the right and left OBs showed that there was no significant difference between them in regard to the size and thickness of cell strata in the cat used in the present experiment.View full abstractDownload PDF (1023K) -
Takashi NAKANO, Yoshie IWAMA1989 Volume 66 Issue 5 Pages 271-275
Published: 1989
Released on J-STAGE: September 24, 2012
JOURNAL FREE ACCESSIn the Suncus murinus, the thyroid, the cricoid and the arytenoid cartilages were in part ossified. The foci of the red bone marrow, termed as the "marrow foci", were observed in the ossified portion of the cartilages. The marrow foci were filled with mature and immature blood cells. It is suggested that the marrow foci take part in active hematopoiesis in the Suncus. Further, a canal which connected the marrow cavity and the outside of the cartilage was occasionally seen. It seems that the canal corresponds to the nutrient canal.View full abstractDownload PDF (1335K) -
Masataka ITO, Hayato KAWAKAMI, Shozo SAITO, Toshio AOYAGI, Hiroshi HIR ...1989 Volume 66 Issue 5 Pages 277-282
Published: 1989
Released on J-STAGE: September 24, 2012
JOURNAL FREE ACCESSDolichos biflorus agglutinin (DBA) specifically stains the perinuclear region of the human parietal cell that corresponds to the intracellular secretory canalicular membrane at the electron microscopic level (Histochemistry 83: 189,1985). In the present study, the DBA-staining intensity of the parietal cell was quantitatively estimated in association with gastric acid secretion. Gastric fundic glandular tissues were taken by endoscopic biopsy from 11 healthy males before and after administration of tetragastrin (4μg/kg) or betazol hydrochloride (1 mg/kg). Paraffin sections were prepared and stained with DBA by the ABC method. Light absorbance of the stained parietal cells covering a spot 20.9 μm in diameter was measured using a microspectrophotometer set at wavelength of 365 nm. In all cases. a significant increase in absorbance was recorded after stimulation. The total average of the absorbance before and after stimulation was 0.21 and 0.29, respectively. Electron microscopy revealed that the increase in absorbance was caused by an increase in surface area of the membrane of the intracellular secretory canaliculi.View full abstractDownload PDF (2590K)
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