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Volume 67 (1990 - 199･･･
- Issue 6 Pages 405-
- Issue 5 Pages 297-
- Issue 4 Pages 219-
- Issue 2-3 Pages 65-
- Issue 1 Pages 1-
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Volume 67, Issue 2-3
Displaying 1-17 of 17 articles from this issue
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Hiromi IKE1990 Volume 67 Issue 2-3 Pages 65-79
Published: August 20, 1990
Released on J-STAGE: September 24, 2012
JOURNAL FREE ACCESSSEM studies on the microvascular architecture of the hard palatine mucosa, especially the transverse palatine plicae, and the morphological relations between the microvasculature and layers of the hard palate mucosa of the rabbit, were carried out by the acryl plastic injection method. The findings were compared with those obtained previously in the cat and Japanese monkey. Morphological differences and similarities between the papillae in the lamina propria and the capillary loops in the papillae were elucidated by SEM. A boneless area was found in the hard palate since the palatine fissures occupied a large area between the diastemata. The transverse palatine plicae numbered 14-16 symmetrically in the hard palate, and were more developed than those in the cat and Japanese monkey. In sagittal sections of the hard palate, the transverse palatine plicae were observed to be serrated, since they were located close to each other with small narrow interplical regions. The plical branches were usually derived from the major and minor hard palatine arteries, and formed the primary arterial network in the submucous layer of the hard palate. Twigs diverging from this network formed the second arterial plexus in the lamina propria, and furthermore, a subepithelial capillary network was formed immediately beneath the epithelium. From this network, capillary loops sprouted into papillae. Similarities were found between the papillae and capillary loops with locational differences. The descending crus of the capillary loop drained into the venous site of the subepithelial capillary network which flowed into the primary venous plexus in the lamina propria, which finally poured into the second venous plexus in the submucous layer. This plexus was termed the palatine venous plexus, and was especially well-developed in the area covering the palatine fissures. The capillary loops in the plica displayed characteristic features according to the portions within it and the interplical regions.View full abstractDownload PDF (4831K) -
Takashi NAKANO, Kaori HASEGAWA, Mikihiko TOMATSU, Hiroshi MUTO1990 Volume 67 Issue 2-3 Pages 81-88
Published: August 20, 1990
Released on J-STAGE: September 24, 2012
JOURNAL FREE ACCESSThe structure and the postnatal transformation of the epithelium lining the vomeronasal organ of the mouse was observed. The medial wall of the middle segment of the organ was lined with the sensory epithelium similar to the olfactory epithelium, and was not undergone any transformation in the postnatal life. The lateral wall of the middle segment and the entire lumen of the rostral segment were covered with the stratified cuboidal epithelium in the newborn mouse. The stratified cuboidal epithelium transformed into the ciliated columnar epithelium with advancing ages, excepting in the vomeronasal duct where the epithelium changed into the stratified squamous one. In the mouse aged between 4 and 10days, mitotic figures were observed not only in the boundary between the sensory epithelium and the ciliated columnar one in the middle segment, but also in the rostral segment of which the entire lumen was covered with the ciliated columnar epithelium.View full abstractDownload PDF (2371K) -
Bunsuke OSOGOE, Tetsuo FUKUMOTO1990 Volume 67 Issue 2-3 Pages 89-95
Published: August 20, 1990
Released on J-STAGE: September 24, 2012
JOURNAL FREE ACCESSA previous study by Osogoe and Yanagi (1987a) has demonstrated that a large proportion of the lamina propria cells(LPC), mostly reticulum cells, in the core of the rat jejunal villi exhibit a strong labeling with [14C]adenie([14C]A). To obtain further information on such LPC, immunohistochemical detection of either la antigen or IgA on intestinal LPC was carried out in adult rats. It was found that almost all the LPC in the vinous core of the small intestine express la antigen, and that in this area IgA-containing B cells also occur in unexpectedly large numbers. However, the number of la-positive non-B cells was greater than that of IgA-containing B cells which are also la-positive. Since the la-positive non-B cell population is composed mostly of reticulum cells, the above findings indicate that a large number of LPC, mostly reticulum cells, not only exhibit a strong labeling with [14C]A but also express Ia antigen. The biological significance of Ia antigen expression is discussed in relation to the proliferative activity of the cells.View full abstractDownload PDF (2205K) -
Yasuhiro TAKEDA, Hitoshi OKUDA1990 Volume 67 Issue 2-3 Pages 97-109
Published: August 20, 1990
Released on J-STAGE: September 24, 2012
JOURNAL FREE ACCESSThe facial artery and its ramifications in 7 adult common marmosets (Callithrix jacchus) were studied by the plastic injection method. The findings obtained are discussed in comparison with those for other primates. In the submandibular region, the facial artery arose from the external carotid artery at the height of the atlas via the linguofacial trunk on 10 of the total of 14 sides examined and independently on the other 4 sides. This common trunk always gave rise to the superior thyroid artery. The facial artery passed anterolaterally between the styloglossus muscle and the intermediate tendon of the digastricus muscle, giving off the styloglossal and the submandibular glandular branches, and anteroinferiorly medial to the pterygoideus medialis muscle. In a position anterior to this muscle, the submental artery and masseteric branch were derived. The submental artery gave off the medial pterygoid, the digastric, the cutaneous, the sublingual glandular and the mylohyoid branches, and then continued up to the median line, where it terminated to supply the genioglossus muscle. In the facial region, the facial artery passed anterosuperiorly along the anterior margin of the masseter muscle on 12sides and away from it forwards on 2 sides, giving off the premasseteric branch in one of these 2 sides. It gave rise to the cutaneous, the buccal and the buccinator branches, the inferior labial artery and the communicating branch with the zygomatic artery. It terminated to divide into the superior labial and the naris lateral arteries, although the latter was lacking on 4 sides. The inferior labial artery gave off the mandibular marginal, the inferior labial marginal and the inferior labial glandular branches and terminated to anastomose with the mental artery. The superior labial artery divided into the superand deep branches, each of which continued as a nasal septal branch. The facial artery of the common marmoset usually ascended along the anterior margin of the masseter muscle and did not reach the medial angle of the eye.View full abstractDownload PDF (3721K) -
Hideaki KAGAMI, Hisashi SAKAI1990 Volume 67 Issue 2-3 Pages 111-114
Published: August 20, 1990
Released on J-STAGE: September 24, 2012
JOURNAL FREE ACCESSThe azygos veins in thirty six cadavers (26 adult bodies,10 human fetuses) were examined with special reference to the correlation with the midline of the vertebral column. The azygos veins were often observed to cross the middle of the ventral side of the vertebral column from right to left, and the occurrence of this crossing to the left is more frequent than that previously described - occurring in twenty two of the adult bodies. In three of the adult bodies, the vein ran upwards along the midline. In the remaining adult, the azygos vein ascended on the right side only of the vertebral column. In the fetuses, no azygos vein crossed the midline and the vein lay only on the right side or along the midline of the vertebral column. These results indicate the possibility of leftward displacement of the azygos vein during the ageing process.View full abstractDownload PDF (1313K) -
Takeshi MATSUDA, Yoshifumi FUKUO, Harumichi SHINOHARA, Satoshi MORISAW ...1990 Volume 67 Issue 2-3 Pages 115-120
Published: August 20, 1990
Released on J-STAGE: September 24, 2012
JOURNAL FREE ACCESSThe mouse pericardium is a continuous serous membrane, up to postnatal day 6 (P6), that consists of pericardial and pleural mesothelia with sparse connective tissue sandwiched in between. This study shows that on P7 the pericardium becomes fenestrated, and the pericardial and pleural cavities become continuous. We found that the number of pores per pericardium increased continuously with the advance of age and reached as many as 3000 on P21. Transmission electron microscopy of the pericardium revealed various structures of the pericardial and pleural mesothelia that may relate to the formation of the pericardial pores. The pericardial and pleural mesothelia were adjoined with cytoplasmic processes that extended toward the base of the opposing mesothelium. As a result of the adjoinment, a pair of U-shaped folds were formed. The two U-shaped folds were connected with tight junctions at their apices, and separation of these junctions may give rise to the pericardial pores.View full abstractDownload PDF (2201K) -
Nobuharu IWAHORI, Kaori NAKAMURA, Chisako MAMEYA1990 Volume 67 Issue 2-3 Pages 121-126
Published: August 20, 1990
Released on J-STAGE: September 24, 2012
JOURNAL FREE ACCESSThe brain stem of the triturus was observed to be initially composed exclusively of the mantle layer. A few days before hatching, a narrow marginal layer differentiated peripherally. At the time of hatching, the marginal layer was clearly visible throughout the brain stem, except for in a medial region of the optic tectum. Approximately one week after hatching, a few cells migrated into the marginal layer, and almost simultaneously, a few fibers in that layer were myelinated. Cells migrating into the marginal layer formed reticular neurons as well as the raphe nuclei and superficial cellular layers of the optic tectum. As the development proceeded, the number of myelinated fibers in the marginal layer increased, and cells in that layer, especially reticular neurons, were seen to be embedded among numerous myelinated fibers, assuming the characteristic features of the reticular formation.View full abstractDownload PDF (1611K) -
Shigeru YAMAZAKI1990 Volume 67 Issue 2-3 Pages 127-139
Published: August 20, 1990
Released on J-STAGE: September 24, 2012
JOURNAL FREE ACCESSThe fibrous structure and arrangement of joint capsules of human shoulders [8 males (7 right,6 left),4 females (4 right,3 left)] were observed under a low magnification microscope as well as a polarized microscope on film preparations (Häutchen-Präparat, Vogt 1935) with reference to stained sections (mainly with H, E and orcein). The joint capsule is composed of synovial and fibrous layers and is classified into three types according to tissue composition [areolar (loose connective tissue-Fawcett,1986) type, fibrous (dense fibrous- Fawcett,1986) type and adipose type- (Key 1932)]. In the joint capsule of the shoulder, the areolar type was found in the anterior region, and the fibrous type in the posterior, superior and inferior regions; the adipose type was not found. The author found that the fibrous layer of the fibrous type basically has a 3 layered structure; the composition and arrangement of fibers differ depending on the type of layer. These three layers were named in order from the synovial layer as “Internal fibrous layer (IFL)”, “Intermediate fibrous layer (MFL)” and “External fibrous layer (EFL)”. The external fibrous layer can normally be directly visualized by peeling off the muscles. The EFL consists of external fascia, tendons and their transitional regions, which compose the joint of the shoulder. IFL and MFL can only be observed under a low magnification microscope and are distinguishable on film preparations. The IFL, which is located immediately under the stratum synoviale, consists of fibrous bundles approximately 20μm thick. The MFL, which is adjacent to the IFL, consists of 100-400μm thick fibrous bundles. The IFL and the MFL have a differently fixed arrangement. The fibrous bundle of EFL is slightly thicker than that of IFL and the arrangement of the fibrous bundle is like that of supraspinatus m., infraspinatus m. and teres minor m. in the superior and posterior regions of the joint capsule. The local existence as well as the arrangement of the fibrous layer of these three different types is discussed from the standpoint of mechanical movement of the shoulder joint.View full abstractDownload PDF (4764K) -
Kunihiro URYU, Kanjun HIRUNAGI, Hisashi SAKAI, Toshitake FUJIOKA1990 Volume 67 Issue 2-3 Pages 141-151
Published: August 20, 1990
Released on J-STAGE: September 24, 2012
JOURNAL FREE ACCESSUltrastructural and cytochemical studies were undertaken with special reference to the apical secretion in the ependymal cells of the subcommissural organ in the domestic chicken. Glucose-6-phosphatase (G6Pase) and acid phosphatase (AcPae) were used as cytochemical markers for the endoplasmic reticulum (ER) and lysosomes, respectively. Periodic acidthiocarbohydrazidesilver proteinate (PA-TCH-SP) cytochemistry was employed to detect glycoconjugates. Most dense bodies were negative with AcPase staining. Dilated cisternal of ER were reacted with G6Pase cytochemistry. Golgi saccules and several kinds of spherical bodies were stained with PA-TCH-SP cytochemistry. Our results suggest that: 1) most dense bodies in the apical cytoplasm belong to the secretory granules discharged into the ventricular cavity,2) dilated cisternae of the ER serve as the storage site of the substance which eventually becomes the secretory product, however, contents of the ER are not directly released into the ventricular cavity. Findings of this studies lead us to speculate that there are two intracellular transportation via different compartments: one is a transport via small vesicles from the perinuclear ER to the Golgi apparatus and the other is a transport bypassing the Golgi apparatus via cisternae of ER from the perinuclear ER to the supra-Golgi region. The substances in these two structures seem to be intermingled with each other and matured into secretory granules. This granules may be discharged into the ventricular cavity by exocytosis.View full abstractDownload PDF (4350K) -
Usha NARWARIYA, O. P. GUPTA1990 Volume 67 Issue 2-3 Pages 153-159
Published: August 20, 1990
Released on J-STAGE: September 24, 2012
JOURNAL FREE ACCESSAdministration of pituitary extract brings important change in the cells of the corpuscles of stannius. Two variety of cells are found in the corpuscles of stannius of control group, one with dense cytoplasm while the other possess nonreactive cytoplasm. Under the influence of whole pituitary extract, there is an intense cell activity in corpuscles of stannius suggesting more synthesis of hypocalcemic factor. Other possible reasons like stimulation of interrenal, thereby activating corpuscles of stannius have also been discussed. The possible involvement of ACTH or cortisol and synergistic effect of prolactin in promotion of hypercalcemia have also been suggested.View full abstractDownload PDF (2379K) -
Karol M ROGAWSKI1990 Volume 67 Issue 2-3 Pages 161-163
Published: August 20, 1990
Released on J-STAGE: September 24, 2012
JOURNAL FREE ACCESSThis is the third original report on the rhomboideus capitis muscle in man, as far as the author is aware. In the earlier descriptions, the muscle was named as the occipito-scapularis and the rhomboideus-occipitalis or capitis. The muscle was situated on the left side of the neck as a muscular band attached cranially to the occipital bone and caudally to the scapula and was closely related to the splenius capitis and the levator scapulae. A revision of previous descriptions and a brief comparative note on the rhomboideus muscle is given.View full abstractDownload PDF (888K) -
Afonso Henriques, B. Moniz de ARAGAO, Carlos Alberto, MANDARIM-DE-LAC ...1990 Volume 67 Issue 2-3 Pages 165-168
Published: August 20, 1990
Released on J-STAGE: September 24, 2012
JOURNAL FREE ACCESSThe growth of the adrenal gland was studied in 60 brazilian fetuses (12-37 weeks post-conception). The right adrenal gland was quantitatively evaluated; its weight, length and thickness were correlated to the fetal body weight, to the Crown-Pump length and to the gestational age by the allometric method (LogY = kLogX + LogB). The width was the only linear measure with positive allometry, and was the one which presented the greatest relative growth, while the thickness had the smallest one. The adrenal weight presented positive allometry relating to the Crown-Rump length (k = 2.32)and to the gestational age (k = 2.40). The importance of these knowledges in the precocious ultrasonographic diagnosis of congenital adrenal pathologies is discussed.View full abstractDownload PDF (743K) -
Takashi NAKANO, Yoshie IWAMA, Kaori HASEGAWA, Hiroshi MUTO1990 Volume 67 Issue 2-3 Pages 169-174
Published: August 20, 1990
Released on J-STAGE: September 24, 2012
JOURNAL FREE ACCESSIn the adult Suncus murinus, the rostral part of the nasopharynx is lined with the ciliated columnar epithelium continuing from the nasal cavity, while the laryngopharynx with the stratified squamous epithelium; i. e., the epithelium lining the caudal part of the nasopharynx forms the transitional zone between the ciliated columnar epithelium and the stratified squamous one. The epithelium shows gradations ranging from ciliated stratified low-columnar through stratified cuboidal to stratified squamous type. It is suggested that the epithelium is identical with the “intermediate epithelium (Nakano,1986)”.View full abstractDownload PDF (1878K) -
Yoshie IWAMA, Kaori HASEGAWA1990 Volume 67 Issue 2-3 Pages 175-181
Published: August 20, 1990
Released on J-STAGE: September 24, 2012
JOURNAL FREE ACCESSEmploying immunohistochemical techniques with OsO4 single fixation, we identified mouse pituitary thyrotropes (TSH cells). The cells stained with TSH antiserum are angular or slender with a small nucleus. These cells con tain small secretory granules (about 120-200 nm in diameter) and numbers of cored vesicles, either attached to the cell membranes or lying free in a relatively electron transparent cytoplasm. In the untreated male mouse, the TSH cell modifies its morphology according to the functional phase. The first form of TSH cells [Type I] is small. The endoplasmic reticulum and the Golgi apparatus are not prominent, and secretory granules are very few. In the second hypertrophied form [Type II], the endoplasmic reticulum is very prominent and occurs as a series of grossly dilated sacs of irregular shape. The Golgi apparatus is greatly enlarged and a large number of electron-dense secretory granules and cored vesicles are observed. Type II thyrotropes are rarely encountered in normal tissue.View full abstractDownload PDF (3257K) -
Hirotsugu TERAKURA, Kazuya YOSHINAGA, Yoshihisa SERA, Toyoaki FUJIMOTO1990 Volume 67 Issue 2-3 Pages 183-193
Published: August 20, 1990
Released on J-STAGE: September 24, 2012
JOURNAL FREE ACCESSThe primitive gut in vertebrates can be divided into the foregut, midgut, and hindgut. The midgut forms the midgut loop or the intestinal loop, which rotates as it develops the small and large intestines. We examined the effects of transection of the midgut loop on the subsequent development of the intestine in chick embryos by their out-of-the-shell incubation. The development of the embryo and the intestines out of the shell was nearly identical to that usual in-the-shell incubation. The rotation of the midgut loop began in stage 27 (5 days of incubation) and was completed in stage 36 (10days of incubation) after counterclockwise rotation through 180°. In experimental groups, the midgut loop was transected immediately before or in the early stages of rotation (stages 27-33) proximally or distally to the apex of the loop. Transecting of the midgut loop caused little effects on its subsequent rotation regardless of the time or the site of transection although the secondary loop formation of intestine was poor in some cases. The stumps of the transected intestine were repaired and closed. After closure of the stumps, the proximal segment of the intestine was dilated in some cases. The secondary loop formation, or convolution of the intestine didn't occur in some dilated cases.View full abstractDownload PDF (3450K) -
Noriyuki OMAGARI, Koichi OGAWA1990 Volume 67 Issue 2-3 Pages 195-202
Published: August 20, 1990
Released on J-STAGE: September 24, 2012
JOURNAL FREE ACCESSThe three dimensional arrangement of fibrocytes in the dermal papilla of the human sole skin was examined by the scanning and transmission electron microscopy after removal of the epidermis and collagenous fibers of the dermis by acidic maceration and enzymatic digestion with collagenase. Fibrocytes in the papillary layer were dendritic cells, consisting of bulky or flattened perikarya and numerous cytoplasmic processes of various size. The processes were anastomosed with those of neighboring cells forming a three-dimensional network. Fibrocytes around the blood capillaries were squamous and formed cellular sheaths, on which dendritic fibrocyte processes anchored. The outer surface of the papillae showed a fine villous appearance. It was composed of densely arranged tins processes of fibrocytes, tops of which were almost at the same level. These processes may be sites for fibrillar attachment and play a role in dermal anchoring to the epidermis. In the reticular layer, fibrocytes were flattened, stellate cells which were anastomosed with neighboring cells and formed two-dimensional latticework. These cellular lattices were arranged in lamellae, oriented roughly parallel to the skin surface. Nerve bundles were often encountered in the labyrinthine space of the fibrocylic network.View full abstractDownload PDF (2998K) -
Keishi OKAMOTO1990 Volume 67 Issue 2-3 Pages 203-217
Published: August 20, 1990
Released on J-STAGE: September 24, 2012
JOURNAL FREE ACCESSA particular branch of the renal vein, which is detected behind the renal pelvis at the hilum at the rate of ca.80%, and which is proposed as the posterior renal vein (PRV), may be remarked as morphologically significant. PRV maybe divided into the typical and non-typical categories. But, in accordance with the bilateral asymmetry of the renal vein, PRV differs between the two sides. Thus on the right (82/270 = 30%), the first category of PRV directly joins the inferior vena cava (IVC) 1-3cm lower than the ordinary or anterior renal vein (ARV), and on the left (90/270 = 33%), it joins ARV after receiving the second lumbar vein in most of the examples. The other category of PRV (99/221= 45%), which joins ARV near the hilum, is morphologically regarded to represent the former, which is degenerated to a certain extent. By considering the characteristics above and below the renal vein, the flowing level of PRV into IVC on the right will, above all, indicate the point of transition of the constituent portions of the developing IVC. In the meantime, in view of the assessment that the final portion of the left PRV represents IVC, PRV will afford a logical clue to understand the bilateral symmetry. The posterior veins as observed in the upper retroperitoneal cavity such as the suprarenal gland and diaphragm will constitute the posterior venous system related to PRV.View full abstractDownload PDF (4107K)
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