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Volume 84 (2007)
- Issue 4 Pages 121-
- Issue 3 Pages 83-
- Issue 2 Pages 43-
- Issue 1 Pages 1-
Predecessor
Volume 84, Issue 2
Displaying 1-6 of 6 articles from this issue
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Naoki SHIRAISHI, George MATSUMURA, Akihito UEHARA2007 Volume 84 Issue 2 Pages 43-48
Published: 2007
Released on J-STAGE: October 06, 2008
JOURNAL FREE ACCESSOf the various foot joints, the level of interest shown in the talocalcaneal joint has been notably low. However, when considering stress dispersion during bipedal locomotion, the talocalcaneal joint plays an important role. Present study examined and morphologically classified the talocalcaneal joint.
The present study investigated the morphology of the anterior talocalcaneal articular surface (A) and middle talocalcaneal articular surface (M) of the calcaneus. Using 94 feet of 47 human cadavers for anatomical dissection, the morphology of the A and M was classified into the following 6 types: Type 1, double ellipsoid, and A is markedly smaller than M; Type 2, gourd-form, and A is markedly smaller than M; Type 3, double ellipsoid, but A and M are partially in contact, Type 4, double ellipsoid, A and M are completely separated; Type 5, cylinder-form; and Type 6, others. Types 4 and 5 accounted for the majority of cases. In upright standing and bipedal locomotion, the anterior and middle talocalcaneal joints receive the anterior component of body weight dispersion in the posterior foot region. Morphological classification of articular surfaces that actually bear body weight is important, reflecting the degree of stress dispersion.View full abstractDownload PDF (210K) -
Shogo HAYASHI2007 Volume 84 Issue 2 Pages 49-60
Published: 2007
Released on J-STAGE: October 06, 2008
JOURNAL FREE ACCESSUsing semiserial sections, we histologically observed the carotid sheath and adjacent structures in 8 sides of 5 cadavers. For description, we classified the carotid sheath into 2 parts or laminae: 1) a laminar “adventitia” enclosing each of the cervical great vessels; and 2) a “common sheath” outside the adventitia. Arterial and venous adventitial structures sometimes fused and provided a definite septum between the artery and vein. Contrasting with previous deseriptions, the common sheath did not fuse with superficial or prethracheal lamina of the cervical fasciae, but often fused with visceral fascia to provide a thick plate. The common sheath as well as the prevertebral lamina of the cervical fasciae sometimes became interrupted or unclear, but the adventitia was consistently complete circular. The alar fascia was usually considered as one layer of the multilaminar structure behind the cervical viscera, but it was difficult to identify as a single proper lamina. The carotid sheath was thus not a dissection artifact, but a definite histological structure. However, interindividual and/or site-dependent variations were evident in thicknesses of the adventitia and common sheath. Consequently, the author proposed a model of the fascial arrangement around cervical great vessels that unexpectedly differs from most descriptions in textbooks.View full abstractDownload PDF (1219K) -
Akira IIMURA, Takeshi OGUCHI, Masakazu SHIBATA, Tsuneo TAKAHASHI2007 Volume 84 Issue 2 Pages 61-66
Published: 2007
Released on J-STAGE: October 06, 2008
JOURNAL FREE ACCESSIn a stdudenet course of gross anatomy dissection at Kanagawa Dental College in 2006, we found an extremely rare case of the hepatic artery arising from the superior mesenteric artery of a 78-year-old Japanese male cadaver. This case belonged to type V in Adachi's classification of the celiac trunk and the superior mesenteric artery (1928). The gastro-splenic trunk and hepato-mesenteric trunk both arose from the abdominal aorta and the left gastric artery arose from the gastro-splenic trunk. The hepatic artery arose from the hepato-mesenteric trunk and crossed the portal vein anteriorly.View full abstractDownload PDF (168K) -
Kin-ya KUBO, Kumiko YAMADA, Noritomo KOMADA2007 Volume 84 Issue 2 Pages 67-70
Published: 2007
Released on J-STAGE: October 06, 2008
JOURNAL FREE ACCESSTo examine the distribution ofenameloid and proliferating cells during odontogenesis in the incisor teeth of Plecoglossus altivelis, we investigated the distribution ofenameloid using alizarin red S and the distribution of bromodeoxyuridine (BrdU)-immunoreactive cells during odontogenesis of the teeth of the fish. Enameloid was present over the entire surface layer of the incisor teeth. BrdU-immunoreactive cells were observed in the inner and outer enamel epithelium, the odontoblasts, and dental papilla cells around the regions currently being formed. These findings suggest that ameloblasts and odontoblasts actively divide around the region currently being formed, suggesting that enameloid and dentin are made in cooperation by ameloblasts and odontoblasts.View full abstractDownload PDF (163K) -
Masaki KAMATA, Masayori SHIRAKAWA, Kenichiro KIKUCHI, Takanori MATSUOK ...2007 Volume 84 Issue 2 Pages 71-76
Published: 2007
Released on J-STAGE: October 06, 2008
JOURNAL FREE ACCESSThis study was designed to examine whether the sublingual gland parenchyma is infiuenced by the development of insulin-dependent diabetes mellitus. The sublingual glands of rats with streptozotocin-induced diabetes were examined by light and electron microscopy. In order to define the limiting membrane of mucous granules in more detail, samples processed by rapid freezing following by freeze-substitution in addition to chemical fixation were also prepared for electron microscopy. Light and electron microscopy showed vacuole-like structures considered to be lipid droplets in the cytoplasm of serous demilune cells, the largest reaching 4 pm in diameter. Electron microscopy of the chemically fixed samples revealed granule-1ike structures in addition to the mucous granules proper in the mucous cell cytoplasm. However, electron microscopy of the freeze-substitution fixed samples demonstrated no limiting membrane on the surface of the granule-1ike structures, although this was clearly observed on the surface of the mucous granules. Accordingly, the granule-like structures present in the mucous cell cytoplasm appeared to be lipid droplets. These findings suggest that the sublingual gland mucous cells become dysfunctional during the development of insulin-dependent diabetes meMtus, although to a slighter degree than the serous demilune cells.View full abstractDownload PDF (231K) -
Shoichi EMURA, Toshihiko OKUMURA, Huayue CHEN2007 Volume 84 Issue 2 Pages 77-82
Published: 2007
Released on J-STAGE: October 06, 2008
JOURNAL FREE ACCESSThe dorsal lingual surfaces of two adult Japanese marten (Martes melampus) were examined by scanning electron microscopy (SEM). Filiform, fungiform, vallate and foliate papMae were observed. A small filiform papilla on the apical surface of the tongue had several pointed processes. A smal1 filiform papilla contained the connective tissue core consisting of several smal1 processes. A large filiform papilla of the lingual body consisted of a main papilla and some secondary papillae. A large filiform papilla contained the connective tissue core consisting of processes of various size. The fungiform papillae are round in shape. The connective tissue core of the fungiform papilla had a top with several round depressions. The four vallate papillae were located on both sides of the posterior end of the lingual body and each papilla was surrounded by groove and crescent pad. A zigzag surface structure appeared on the connective tissue core of the vallate papilla. The foliate papillae were seen on the dorsolateral aspect of the tongue and some ridges and grooves were exposed reciprocally. A zigzag surface structures appeared on the connective tissue cores of the ridges of the foliate papillae.View full abstractDownload PDF (290K)
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