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Volume 30 (1968)
- Issue 6 Pages 317-
- Issue 5 Pages 257-
- Issue 4 Pages 183-
- Issue 3 Pages 125-
- Issue 2 Pages 61-
- Issue 1 Pages 1-
Volume 30, Issue 6
Displaying 1-5 of 5 articles from this issue
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Haruka MORITA, Yoji OMORI, Yasuo OSHIMA1968 Volume 30 Issue 6 Pages 317-322
Published: December 25, 1968
Released on J-STAGE: February 13, 2008
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Toshiro SHIODA, Koshi MOCHZUKI, Shiichi NISHIDA1968 Volume 30 Issue 6 Pages 323-330_4
Published: December 25, 1968
Released on J-STAGE: February 13, 2008
JOURNAL FREE ACCESSThe terminations of nerves in the vas deferens of the stallion and bull, including the ampulla ductus deferentis of the stallion, were investigated histologically by a modification of the BIELSCHOWSKY silver impregnation method. Besides, the same problem was studied by the CHAMPY-MAILLET osmium tetroxide-zinc iodide technique and a modification of the cholinesterase technique of KoELLE and FRIEDENWALD in the rat vas deferens. The following results were dbtained. 1) Branching off from the plexus ductus deferentialis in the adventitia, nerve bundles are distributed to the smooth muscle layers and mucous membrane. Large nerve bundles enter the muscle layers, and either ramify into several branches or give off single branches at intervals. The branches pass into the autonomic terminal plexus with SCHWANN cell nuclei. Their terminal axons run among smooth muscle cells. 2) A sensory terminal formation was found near the outer muscle layer in the adventitia of the vas deferens of a stallion. 3) In all the species examined, a subepithelial nerve plexus is present in the tunica propria. Especially in the rat, subepithelial and submucosal plexuses are recognized. These nerve plexuses show high specific acetylcholinesterase activity. 4) Many large nerve bundles enter the glandular portion of the ampulla. In the tunica propria, many autonomic terminal strands are observed. They seem to be distributed to smooth muscle cells scattered. Besides, the possible presence of sensory nerve fibers was suggested.View full abstractDownload PDF (3993K) -
Tohru WATANABE1968 Volume 30 Issue 6 Pages 331-340_6
Published: December 25, 1968
Released on J-STAGE: February 13, 2008
JOURNAL FREE ACCESSAdult fowls, more than six months of age, were studied on the occurrence of retro-grade degeneration in cells of the vagal nuclei after unilateral or bilateral removal of the vagal nerve or its branch. They were killed three days to one year after the operation. In those fowls sacrificed six to seven days after vagotomy, maximal chromatolysis was noted in the dorsal vagal nucleus. Chromatolysis occurred in 82.6% of the total cell population of this cell column. The ventral vagal nucleus always presented weak chromatolysis and possessed many chromophilic cells. The complete-cell count was only 26.5% of that of affected cells in the cell column. Localization of chromatolytic cells was observed in the dorsal vagal nucleus to such an extent as varying with the site of operation. The dorsal and the lateral areas of the rostral and the middle regions of the nucleus gave off nerve fibers which innervated to the pharynx and larynx, whereas the ventral and medial areas were concerned with the innervation of the stomach. The thoracic organs were innervated mainly by the middle region and partially by the caudal region of the nucleus.View full abstractDownload PDF (3542K) -
HISTOPATHOLOGIGAL OBSERVATIONS ON TWO SPONTANEOUS GASES OF TOXOPLASMOSIS IN THE MONKEY (LEMUR CATTA)Chitoshi ITAKURA, Hideo NIGI1968 Volume 30 Issue 6 Pages 341-346_3
Published: December 25, 1968
Released on J-STAGE: February 13, 2008
JOURNAL FREE ACCESSTwo spontaneous cases of toxoplasmosis were observed in monkeys (Lemur catta, males, and adults). In the two cases, death occurred 8 and 4 days, respectively, after the onset of clinical symptoms. The histopathological changes in the two cases were almost similar. They were the typical features of acute toxoplasmosis. It is for the first time that spontaneous toxoplasmosis occurred in the species, Lemur catta, of monkeys in Japan.View full abstractDownload PDF (3418K) -
Hiromitsu OTSUKA1968 Volume 30 Issue 6 Pages 347-355_1
Published: December 25, 1968
Released on J-STAGE: February 13, 2008
JOURNAL FREE ACCESSIn order to observe the effect of anesthesia upon the muscular activity, the postural variation in an anesthetic condition was classified into five stages. The activity pattern of skeletal muscles corresponding to each postural variation was discussed electromyographically. In two dogs which had been trained in such manner as to maintain a normal standing posture for a long time, burst discharges were recorded from antigravity muscles of the fore and hind limbs and of the trunk. The results obtained are summarized as follows. (1) The effect of anesthesia at the initial stage appeared nearly at the same time in the muscles of the area under the control of spinal nerves which responded to the anesthetic. The relax from the drug action, however, was descendant. The expression of posture was similar in appearance at the initial and recovery stage, but from the viewpoint of the muscular activity, the mode of maintaining postures was different. (2) The influence of anesthesia exerted on the standing posture appeared as a variation of the mode of fixation on the hind-limb joints. Especially, the fixation of the knee joint and paralysis of the hind quarters were closely related to each other. The activity of the fore-limb muscles swayed with the severity of paralysis of the hind quarters. (3) In case of the administration of 0.4ml per kilogram of body weight of the anesthetic, the effect of anesthesia came up not only to the hind-limb muscles but also to the trunk muscles. Consequently, dogs might recline at the anesthetic stage. There-fore, on the basis of the method of maintaining the posture, the area affected with the anesthetic could be located.View full abstractDownload PDF (1074K)
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