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Volume 57 (1980 - 198･･･
- Issue 6 Pages 337-
- Issue 5 Pages 265-
- Issue 4 Pages 189-
- Issue 2-3 Pages 79-
- Issue 1 Pages 1-
Predecessor
Volume 57, Issue 4
Displaying 1-4 of 4 articles from this issue
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NORIO OZEKI, IKUO YOSHIOKA, HIROSHI MUTO1980 Volume 57 Issue 4 Pages 189-199
Published: 1980
Released on J-STAGE: September 24, 2012
JOURNAL FREE ACCESSThe mouse buccal mucosa was observed with a scanning electron microscope and a light microscope.
1. Many epithelial papillae, termed buccal papillae by Yoshioka and Muto, projecting from the oral surface were observed on the buccal mucosa. The buccal papillae contained connective tissue papillae but no secondary papillae. Their form was classified into the following types; filiform papilla type or wart type, beak type, fiat oval type, and transitional types between these.
2. Buccal papillae were abundant in the posterior and middle parts of the buccal mucosa, but were not seen in the anterior part. The border region (Schumacher)could not be distinguished on the basis of the surface structure of the mouse buccal mucosa. The buccal papillae showed no close relationship to the border region in their distribution.
3. In the closed state of the mouth, the buccal mucosa exhibited rising of the surface, greater thickness of the epithelium and higher connective tissue papillae, but these findings were not remarkable in the opening state. it is therefore questionable histologically whether to distinguish the border region from the buccal mucosa.View full abstractDownload PDF (2772K) -
Blood Vessels in the Non-obliterated Frontal SutureHIROSHI MUTO, IKUO YOSHIOKA1980 Volume 57 Issue 4 Pages 201-217
Published: 1980
Released on J-STAGE: September 24, 2012
JOURNAL FREE ACCESSAn attempt was made to elucidate some of the fine structures of the frontal suture which have not been demonstrated by previous investigators. Fortynine skulls were used, and the frontal suture was studied by light and scanning electron microscopy. The following rosults were obtained.
1) The connective tissue including collagen fibers which indicated the nonobliterated frontal suture connected the right frontal bone with the left one, and entered into the crevice in a wedge.
2) Comparatively large vessels were found along the direction of longitudinal fibers in the connective tissue of the crevice.
3) The tissue in the suture was in close contact with the periosteum, and the vessels in the tissue united with the emissary veins.
4) The blood vessels in the Haversian system of the compact bone near the frontal suture were mostly obliterated, so that bone formation stopped and the frontal suture remained in non-obliteration.
5) In the frontal section of the embryonal frontal bone, the blood vessels were few at the marginal part near the frontal suture.
6) The state of the bone union in the frontal suture was classified into three types based on scanning electron microscopy: (1) The margins towards the mediam line between the right and left frontal bone were almost united in the same form. (2) The external surface of one margin of the suture appeared to be convex and the surface was overlapped by the other margin. (3) Many small pores were present in a row at the frontal suture.
7) Crystalloid substance considered to represent a deposit of bone components was seen in the fractured surface of the frontal bone.View full abstractDownload PDF (3951K) -
KENHJI KAKUDO1980 Volume 57 Issue 4 Pages 219-239
Published: 1980
Released on J-STAGE: September 24, 2012
JOURNAL FREE ACCESSA study was made of the uptake of intravenously injected horseradish peroxidase (HPO) by rat synovial lining cells in the temporomandibular joint. Synovial membrane was excised from rats sacrificed at various times after the injeciton of HPO, fixed in glutaraldehyde fixative, incubated in diaminobenzidine medium, postfixed in OSO4, and processed for electron microscopy. Within 5 min of HPO injection, reaction product was detected cytochemically in the synovial linin g cells (type A cells). The highest accumulation of reaction product in the type A cells was found at 60 min after the injection of HPO. Furthermore, lysosomes in the type A cells after injection of HPO were visualized by acid phosphatase activity. It is concluded, that exogenous HPO is incorporated into the type A cell rather than the type B cell by endocytosis throuhg the cell membrane and that these endocytotic structures are fused with lysosomes.View full abstractDownload PDF (8428K) -
SEISAN KOU, AKIMICHI TAKEMURA, TAKASHI IRIFUNE, TADASHI IRIFUNE1980 Volume 57 Issue 4 Pages 241-249
Published: 1980
Released on J-STAGE: September 24, 2012
JOURNAL FREE ACCESSAn anomalous case of the splenic artery arising from the superior mesenteric artery, forming a lienomesenteric trunk, was found in a 70-year-old female among cadavers for student dissection. In this case, the celiac trunk was observed as a common trunk between the left gastric and the common hepatic arteries. Related to these findings, the accessory left gastric artery arose from the left hepatic, and an arcade was formed by anastomosis between the pancreatica magna artery of the splenic and the dorsal pancreatic artery of the common hepatic. Such a case was not described in Adachi's classification (1928), but belonged to type IV′′′of Morita's elassificatlon(1935)and to type IV of Michds' classification(1955).View full abstractDownload PDF (2745K)
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