All issues
Volume 64 (1987 - 198･･･
- Issue 6 Pages 291-
- Issue 5 Pages 223-
- Issue 4 Pages 157-
- Issue 2-3 Pages 99-
- Issue 1 Pages 1-
Predecessor
Volume 64, Issue 4
Displaying 1-6 of 6 articles from this issue
- |<
- <
- 1
- >
- >|
-
Taizo SHIBATA, Masatake IMAI, Keiichi MORIGUCHI1987 Volume 64 Issue 4 Pages 157-163
Published: 1987
Released on J-STAGE: September 24, 2012
JOURNAL FREE ACCESSThe authors made electron microscopic studies of two types of mucous cells in the Japanese macaque. The following conclusions were reached: 1. The type I mucous cell is filled with large and small s ecretory granules. They consist of slightly distorted spheres and agglutinate together. However, almost all of them maintain their own form. The density of the granules is low. 2. The type II mucous cell is filled with agglutinated secretory granules. They have lost their own form, and the density is medium. A low-density zone borders the margin of the granules. Small and large plate-like crystalloids and many corpuscles are contained in the secretory granules. The density of such inclusions is high. 3. The variable density of the secretory granules in the two types of mucous cells is related to the numerous fine corpuscles in the same granules. 4. The density of the above-mentioned low-density zone closely resembles that of the secretory granules in the type I mucous cell. 5. On the basis of the above data, the authors undertook a detailed histochemical examination of strong, acid mucopolysaccharide; however, they failed to demonstrate any reaction to AB (pH 1.0 and 0.5) in the type II mucous cell. 6. There are extremely clear difference s in the quantity of strong acid mucopolysaccharide and electron microscopic figures of the secretory granules between the two types of mucous cells. 7. Both mucous cells have short microvilli. 8. The cell organelles in the two types of mucous cells display no specially noteworthy features.View full abstractDownload PDF (2658K) -
Shigeto KATAOKA, Hidekazu WAKURI1987 Volume 64 Issue 4 Pages 165-170
Published: 1987
Released on J-STAGE: September 24, 2012
JOURNAL FREE ACCESSThe formation and distribution of arachnoid granulations were examined in the brains of 31 dogs. It was possible to classify the distribution into six types. Type I was the most common of the six (48.4%). Type II was found in 29%, type III in 9.7%, type IV In 6.5%, and types V and VI in 3.2% each.View full abstractDownload PDF (1401K) -
Takashi NAKANO, Hiroshi MUTO1987 Volume 64 Issue 4 Pages 171-181
Published: 1987
Released on J-STAGE: September 24, 2012
JOURNAL FREE ACCESSTaste Bud, Nasopharynx, Nasopharyngeal hiatus, Intermediate epithelium, Mouse Summary: In the lateral wall of the mouse nasopharynx,2-6 taste buds were observed on each side. They were located in the area close to the nasopharyngeal hiatus, which was circularly surrounded by the palatopharyngeal eminence, and were embedded in the stratified cuboidal and the stratified squamous types of the intermediate epithelium. It was suggested that the taste buds were related to the reflex mechanism protecting the upper respiratory tract in swallowing, i. e. when the taste buds were stimulated by food and its information was conveyed to the central nervous system, the soft palate was drawn by the levator palati muscle and the palatopharyngeal eminence was contracted by the palatopharyngeus muscle to close the nasopharyngeal hiatus.View full abstractDownload PDF (3175K) -
Nobuharu IWAHORI, Etsuko KIYOTA, Kaori NAKAMURA1987 Volume 64 Issue 4 Pages 183-191
Published: 1987
Released on J-STAGE: September 24, 2012
JOURNAL FREE ACCESSThe structure of the olfactory and respiratory epithelia of the snake was studied using the rapid Golgi and the Nissl methods. The olfactory epithelium was a pseudostratified columnar one and was composed of supporting, olfactory and basal cells which were columnar, bipolar spindle and triangular, respectively. The nuclei of these three types of cells were arranged in a laminar pattern: those of the supporting cells were located most superficially, those of the olfactory cells occupied the middle wide zone, while those of the basal cells were arranged in a row at the base of the epithelium. The respiratory epithelium was a ciliated pseudostratified columnar one and was made up of columnar, mucous and basal cells which were cylindrical, goblet-like and triangular, respectively. Thus, the fundamental organization of the olfactory and respiratory epithelia in the snake was similar to that of the olfactory and and respiratory epithelia in various other terrestrial animals.View full abstractDownload PDF (2998K) -
Takuro MURAKAMI, Akio KIKUTA, Takafumi NAKAI1987 Volume 64 Issue 4 Pages 193-201
Published: 1987
Released on J-STAGE: September 24, 2012
JOURNAL FREE ACCESSIn the dog, raccoon dog, cat and rabbit, the second proximal perforating branch was fully developed forming the deep palmar arch. The catella volaris proximalis was only observed in the rabbit. The palmar metacarpal arteries arose from the deep palmar arch or catella volaris proximalis, and descended in the deep palm to finally connect with the palmar digital arteries at the end of the metacarpus. Regardless of their origin and termination, the palmar metacarpal arteries could be classified into four kinds of arteries: (1) sM arteries descending on the palmar surface of the interosseous muscles along the metacarpal bones, (2) sI arteries descending on the palmar surface of the interosseous muscles along the intermetacarpal spaces, (3) dM arteries descending deep in the interosseous muscles along the metacarpal bones, and (4) dI arteries descending deep in the interosseous muscles along the intermetacrapal spaces. These findings are consistant with those of the human hand and foot (Murakami,1969,1971).View full abstractDownload PDF (1907K) -
Takashi NAKANO, Hiroshi MUTO1987 Volume 64 Issue 4 Pages 203-221
Published: 1987
Released on J-STAGE: September 24, 2012
JOURNAL FREE ACCESSIn most cases, the rectal epithelium was abruptly changed into the anal canal epithelium at the pectinate line. In some cases, however, just proximal to the pectinate line there existed the transitional zone between the rectal epithelium and the anal canal one The epithelium occupying the transitional zone consisted of cuboidal cells with bulging surfaces or flattened cells. It is considered that the epithelium represents various stages which the rectal columnar epithelium transforms into the stratified squamous one. The epithelium lining the mouse anal canal showed an irregular paving-stone-like appearance, which was a typical surface appearance of stratified squamous epithelium, throughout from the anal margin to the pectinate line. The width of the microridges in the distal part of the anal canal was about doubled compared to that in the proximal part. It is suggested that the epithelium in the distal part is keratinized, while that in the proximal part is nonkeratinized.View full abstractDownload PDF (5276K)
- |<
- <
- 1
- >
- >|