Preferencje help
Widoczny [Schowaj] Abstrakt
Liczba wyników

Znaleziono wyników: 11

Liczba wyników na stronie
Pierwsza strona wyników Pięć stron wyników wstecz Poprzednia strona wyników Strona / 1 Następna strona wyników Pięć stron wyników wprzód Ostatnia strona wyników

Wyniki wyszukiwania

Wyszukiwano:
w słowach kluczowych:  cialo migdalowate
help Sortuj według:

help Ogranicz wyniki do:
Pierwsza strona wyników Pięć stron wyników wstecz Poprzednia strona wyników Strona / 1 Następna strona wyników Pięć stron wyników wprzód Ostatnia strona wyników
The aim of this research was the development and maturation of neurons in the baso-lateral group of corpus amygdaloideum in pigs during the ontogenesis process. The brains of domestic pigs of both sexes (taken during the following periods of their lives: from 7th to 15th week of intrauterine life, newborn animals, one-month and one-year-old animals) were used as the material for the examination. The brains were removed and processed conventionally by the microscope. The basolateral group of corpus amygdaloideum in domestic pigs consists of nucleus amygdaloideum lateralis and nucleus amygdaloideum basalis-lateralis. In the 7th, 8th and 9th weeks of intrauterine life the primary corpus amygdaloideum is made up of a very large quantity of thickly arranged neuroblasts. Their nuclei are of spherical shape and the cell nucleus is surrounded by a very small quantity of cytoplasm. In the 10th, 11th and 12th weeks of intrauterine life the differentiation of the formerly homogenous cells takes place. The group, dorsally situated, is corpus amygdaloideum lateralis, while lying beneath it is corpus amygdaloideum basalislateralis. In the next period of intrauterine life and in newborn animals the appearance of nervous cells forming nucleus amygdaloideum lateralis and nucleus amygdaloideum basalis-lateralis does not change. One can say that the cells forming the above mentioned nuclei of corpus amygdaloideum in domestic pigs are already morphologically mature in newborn animals.
4
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
Content available

Zaraźliwe emocje

63%
The aim of the study was a quantitative examination (morphometrical analysis) of neurons during the maturation process of amygdaloideum baso-lateralis nuclei. The brains of domestic pigs of both sexes (obtained from the following periods: 7th-15th week of intrauterine life, newborn animals, one-month and oneyear old animals) were the examination material. The brains were removed and examined conventionally by microscope. The preparations were dyed according to Kltivera-Barrer's method as well as the Nissel method. The histological preparations obtained in the above way were used to morphometrically analyze the neurons of the corpus amygdaloideum's nucleus amygdaloideum baso-lateralis. Morphometrical examinations were carried out using the Nikon Eclipse E-600 microscope compressed with a JVC TK-1380-E camera and a computer using the MULTI-SCAN-BASE 08,98 morphometrical program. The following parameters were examined: the cross-section of nerve cells and the area of cell nuclei in µm2, the percentage of the nuclei-cellar rate, and the average diameter of nervous cell in µm, the volume of nervous cell in µm3, the number of neurons per 1 mm2, and the number of neurons per 1 mm3. Morphometrical observations revealed that cells forming the primary corpus of amygdaloideum in week 9 of fetal life are identical in shape and size. The size of the cell area in the 9th week of fetal life oscillates around 45 µm2. These cells, homogenous in the previous periods, undergo considerable differentiation during week 11 of fetal life. Mass nucleus structures appear from homogenous cells, including amygdaloideum baso-lateralis nuclei. The examined morphometrical parameters infer that neurons become morphologically mature at the end of fetal life.
The aim of this study was to describe the structures and topography of the nuclei of the amygdaloid complex in chinchillas. The material for the study consisted of five chinchilla brains. The brains were fixed in formalin, dehydrated in ethyl alcohol and embedded in paraffin blocks. Next, the blocks were cut in the transversal plane into 12 µm-thick slices. The slices were coloured according to Klüver and Barrer's method and examined under a light microscope (OLYMPUS BX 40) equipped with the camera Color View IIIu Soft Imaging System. For the morphometric measurements, the program Cell^D Soft Imaging System (SIS) was used. One can distinguish three parts of the amygdala: corticomedial amygdaloid complex (CMC), basolateral complex (BLC) and other amygdaloid areas.( OA). The BLC is divided into three nuclei: lateral amygdaloid nucleus (LA), basolateral amygdaloid nucleus (BL) and basomedial amygdaloid nucleus (BM). The chinchilla's lateral amygdale (LA) is well developed and situated above the BL; laterally, it is bordered by the external capsule; the caudal pole of this nucleus constitutes at the same time the caudal pole of the amygdaloid complex. The basolateral amygdaloid nucleus in chinchillas is situated between the LA and BM. The basomedial amygdaloid nucleus is located ventromedially to the BM and dorsally to the cortical nucleus (CO). The corticomedial amygdaloid complex consists of the following: cortical nucleus (CO), medial nucleus (Me), central nucleus (CE), amygdalohippocampal area (AHA), the nucleus of the lateral olfactory tract (NLOT) and bed nucleus of the olfactory tract (BOAT). The nucleus of the lateral olfactory tract in chinchillas begins at the rostral part of the amygdala. It is bordered medially and dorsally by the anterior amygdaloid area (AAA) and laterally by the anterior part of the cortical nucleus. The chinchilla's bed nucleus of the olfactory tract is situated behind the NLOT. Dorsally, it borders on the ME, laterally on the CO. The central nucleus constitutes the dorsomedial part of the amygdala. The amygdalohippocampal area in chinchillas is located in the caudal part of the amygdala between the inferior horn of the lateral ventricle and CO. The chinchilla's cortical nucleus is a long band of neurons which constitutes the ventral part of the amygdala. The other amygdaloid areas include the anterior amygdaloid area (AAA) and intercalated nucleus (I) The intercalated nucleus consists of the group of neurons between the amygdala nuclei. The AAA constitutes the anterior pole of the chinchilla's amygdala.
Pierwsza strona wyników Pięć stron wyników wstecz Poprzednia strona wyników Strona / 1 Następna strona wyników Pięć stron wyników wprzód Ostatnia strona wyników
JavaScript jest wyłączony w Twojej przeglądarce internetowej. Włącz go, a następnie odśwież stronę, aby móc w pełni z niej korzystać.