Acta morphologica Neerlando-Scandinavica最新文献_第10页

An HRP study of the central connections of the facial nerve in the mallard (Anas platyrhynchos L.). 绿头鸭(Anas platyrhynchos L.)面神经中枢连接的HRP研究

Acta morphologica Neerlando-Scandinavica Pub Date : 1985-10-01

R G Bout, J L Dubbeldam

引用次数: 0

Retroperitoneal paraganglia and the peripheral autonomic nervous system in the human fetus. 人胎儿腹膜后副神经节与外周自主神经系统。

Acta morphologica Neerlando-Scandinavica Pub Date : 1985-10-01

B Baljet, A B Boekelaar, G J Groen

引用次数: 0

The development of the peripheral autonomic nervous system in relation to the gastro-intestinal tract. 与胃肠道有关的外周自主神经系统的发育

Acta morphologica Neerlando-Scandinavica Pub Date : 1985-10-01

A B Boekelaar, J Drukker, G J Groen, B Baljet

{"title":"The development of the peripheral autonomic nervous system in relation to the gastro-intestinal tract.","authors":"A B Boekelaar, J Drukker, G J Groen, B Baljet","doi":"","DOIUrl":"","url":null,"abstract":"In this study the development of vagus nerves and the development of sympathetic nerves related to the development of the upper gastro-intestinal tract was studied in the rat from 12.5 days p.c. until birth by means of enzyme histochemical methods applied to sections and toto preparations. A striking time relation between the ingrowth of the vagus nerves as well as the sympathetic nerves and the appearance of acetylcholinesterase (AChE)-positive cells in the wall of the upper gastro-intestinal tract is established. The maturation of the upper enteric ganglion cells is dependent on the presence of a vagal influence. The vagal ingrowth of the stomach starts at about day 12.5 p.c. In AChE toto preparations it is established that the basic distribution pattern as described in the adult rat is complete at day 15 p.c. However, in contrast with the adult state, gastric branches can be traced up to the pylorus and the greater curvature until day 18 p.c. During the 18th day p.c. there is a tremendous increase in the surface area of the stomach. This increase in surface area of the gastric wall and relative decrease in vagal outgrowth leads to the adult configuration of vagal ramifications in relation to the wall of the stomach which can already be observed on the 19th day p.c.","PeriodicalId":75392,"journal":{"name":"Acta morphologica Neerlando-Scandinavica","volume":"23 2","pages":"157-79"},"PeriodicalIF":0.0,"publicationDate":"1985-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"14952162","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The neural crest in presomite to 40-somite murine embryos. 前体至40体小鼠胚胎的神经嵴。

Acta morphologica Neerlando-Scandinavica Pub Date : 1985-10-01

A E Smits-van Prooije, C Vermeij-Keers, R E Poelmann, M M Mentink, J A Dubbeldam

引用次数: 0

Development of the nervous system. Proceedings of a workshop held during the Congress of the Deutsche Gesellschaft für Histochemie, Maastricht (The Netherlands), 26th-30th September 1984. 神经系统的发育1984年9月26日至30日，荷兰马斯特里赫特，德国组织化学协会(german Gesellschaft fr histochemistry)大会期间召开的研讨会论文集。

Acta morphologica Neerlando-Scandinavica Pub Date : 1985-10-01

引用次数: 0

Induction of an additional floor plate in the neural tube. 在神经管中诱导一个额外的底板。

Acta morphologica Neerlando-Scandinavica Pub Date : 1985-10-01

H W van Straaten, J W Hekking, F Thors, E L Wiertz-Hoessels, J Drukker

{"title":"Induction of an additional floor plate in the neural tube.","authors":"H W van Straaten, J W Hekking, F Thors, E L Wiertz-Hoessels, J Drukker","doi":"","DOIUrl":"","url":null,"abstract":"The role of the notochord in the morphogenesis of the neural tube was investigated by implanting a notochord fragment laterally to the neural wall of a 1.5 day chick embryo. Embryos were sacrificed at 4 days. In the basal part of the neural tube an additional floor plate was induced in the vicinity of the implant. This floor plate was characterized by a low proliferative activity, a thin wall, spindle-like nuclei crowded peripherally and some neuroblast-like cells. It was either blending with the natural floor plate or separated from it, depending on the exact position of the implant. In the latter case neuroblasts were observed in between both floor plates. The additional floor plate was present only when the implanted notochord was less than 25 micron apart from the neural tube; at larger distance an increase of the ventral horn neuroblast area could be seen. It is concluded that the implanted notochord is able to induce a floor plate at 1.5 days of incubation. The specific influence of the notochord on the morphogenesis of the neural tube, its inductive period as well as the presence of the neuroblast-like cells in the additional floor plate are discussed.","PeriodicalId":75392,"journal":{"name":"Acta morphologica Neerlando-Scandinavica","volume":"23 2","pages":"91-7"},"PeriodicalIF":0.0,"publicationDate":"1985-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"14952165","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Late development of the medio-basal hypothalamic neuronal network around puberty. Some histochemical studies in the rat. 青春期前后下丘脑中基底神经网络发育较晚。大鼠组织化学研究。

Acta morphologica Neerlando-Scandinavica Pub Date : 1985-10-01

W J Rietveld, E Marani, M E Boon

引用次数: 0

Longitudinal patterns in the development of the cerebellum. 小脑发育的纵向模式。

Acta morphologica Neerlando-Scandinavica Pub Date : 1985-10-01

E A Lakke, E Marani, A H Epema

引用次数: 0

A mesoscopic technique for the study of the development of the peripheral system in rat foetuses. 用介观技术研究大鼠胎儿外周系统的发育。

Acta morphologica Neerlando-Scandinavica Pub Date : 1985-03-01

J Bloot, A B Boekelaar, G J Groen, B Baljet

{"title":"A mesoscopic technique for the study of the development of the peripheral system in rat foetuses.","authors":"J Bloot, A B Boekelaar, G J Groen, B Baljet","doi":"","DOIUrl":"","url":null,"abstract":"Unlabelled: In order to study the morphogenesis of the nervous system in the rat an acetylcholinesterase in toto method for staining nervous tissue in rat foetuses was developed.Procedure: Rat foetuses of 14-22 days are fixed \"en bloc\" for 24 hours in a cold sucrose-formol solution. Fixed specimens are rinsed for 2 days in cold 0.22 M sucrose in a sodiumcacodylate buffer (pH 7.2). The specimens are cut (mid-)sagittally with the aid of a razor-blade, and incubated in a medium of acetylthiocholine iodide in acetate buffer (pH 5.0). Then, dehydration in glycerine/water mixtures of increasing glycerine content follows. The specimens may be stored in pure glycerine or embedded in epoxy-resin blocks and can be studied under a binocular dissecting microscope. In using this in toto staining method both the continuity of the central and peripheral parts of the nervous system as well as details up to the level of individual perikarya and motor endplates are preserved. With this mesoscopic method the three-dimensional architecture of the peripheral nervous system and its topological relations to other structures can be studies in one specimen. The exact procedure and the results as well as a method for embedding specimens in epoxy-resin blocks for teaching purposes are described. The advantages of this mesoscopic staining method for foetuses are discussed.","PeriodicalId":75392,"journal":{"name":"Acta morphologica Neerlando-Scandinavica","volume":"23 1","pages":"35-46"},"PeriodicalIF":0.0,"publicationDate":"1985-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"15007343","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Postnatal somatometry of the rat facial skeleton. 大鼠面部骨骼的出生后躯体测量。

Acta morphologica Neerlando-Scandinavica Pub Date : 1985-03-01

A W Park, B J Nowosielski-Slepowron

{"title":"Postnatal somatometry of the rat facial skeleton.","authors":"A W Park, B J Nowosielski-Slepowron","doi":"","DOIUrl":"","url":null,"abstract":"Growth of the rat facial skeleton over a 40 day period from birth was examined relative to 8 length and 4 width parameters of animals subject to somatic growth retardation experimentally induced by overtaxing the maternal lactational capacity by means of excessively large cross-fostered litters. Least squares regression lines were calculated for the preweaning period (day 1-20); the postweaning period (day 21-40) and the total period (day 1-40), thereafter being recalculated into segmented regression lines relative to the physiological growth phases. Specific phases of growth activity were noted throughout the 40 days with those in the preweaning period showing a marked consistency concomitant with the maternal lactational ability and subsequent emergence of biological weaning. A consistent phasic growth spectrum with definitive breaks in continuity supports the original postulate (Brody, 1927) that growth curves consist of phases of exponential activity delineated by changes in growth rate. Due to the inclusion of both control and experimental samples, the breakage points of the phases marking the change of growth rate different and were therefore reciprocated by alterations of phasic duration. Phasic growth occurred in the postweaning period with some degree of variance which did not permit an assessment of the causation factors with sufficient validity. The postweaning period of the experimental sample exhibited varying degrees of growth recovery (catch-up) in the majority of the facial parameters. Covariance analysis of the parameters in most instances showed that the parameters, as defined, and the bone units incorporated within them manifested a characteristic growth response in each sample irrespective of the modifying influence of the environmental factors.","PeriodicalId":75392,"journal":{"name":"Acta morphologica Neerlando-Scandinavica","volume":"23 1","pages":"1-33"},"PeriodicalIF":0.0,"publicationDate":"1985-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"15118411","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0