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1.
观察母兔妊娠20、26、29天和15、30、60、90日龄八点黑獭兔的子宫组织,以探讨八点黑獭兔子宫的形态学发育特点。结果表明：獭兔的子宫随着年龄的增长．其内膜的粘膜上皮由假复层柱状纤毛上皮逐渐分化成紧密规则的单层柱状上皮;固有层在15～30日龄之间出现．内含大量间质细胞;妊娠期固有层发生水肿和充血;子宫肌层在幼龄时分层不明显,各层肌纤维互相交织,随平滑肌细胞分裂增生,3月龄时肌层出现明显的内环、外纵两层,中间形成一层环状排列的血管：獭兔出生后其子宫内膜腺由子宫内膜上皮细胞内陷形成,随后腺上皮细胞经有丝分裂增生,15日龄幼兔已形成单管子宫腺。该研究结果可为兔的解剖学、生殖生理学增添新的内容,也为进一步研究兔生殖系统疾病的治疗与预防提供参考资料。 相似文献
2.
《中国兽医学报》2015,(9):1539-1542
应用石蜡切片技术和HE染色方法观察刺猬食管的显微结构特征,经甲苯胺蓝染色法鉴定食管肥大细胞的分布特点。结果显示:刺猬食管壁的黏膜有许多纵行皱褶,表面被覆复层上皮,浅层细胞角化,厚度为142.109 0μm。黏膜下层组织发达,含有丰富的食管腺和导管,厚度达327.390 6μm。肌层厚度为440.842 8μm,可分为内层环形肌和外层纵形肌。在固有层、黏膜肌层、黏膜下层、肌层和外膜中均有肥大细胞分布,形态多样。结果表明:刺猬食管壁延展性较强,组织结构与其消化机能、食性特点具有一致性,大量的肥大细胞分布可为刺猬食管的黏膜提供一道有效的免疫屏障。 相似文献
3.
选取40、60、120、180和240日龄(d)的滩羊网胃,应用石蜡切片法比较网胃底黏膜上皮厚度、乳头高度和宽度、肌层厚度等结构的变化。结果表明:各日龄舍饲滩羊网胃壁都有黏膜、黏膜下层、肌层和浆膜4层结构;黏膜上皮都为复层扁平上皮,上皮基底部细胞变化较明显,从40 d到120 d上皮基底为立方形细胞,层数逐渐减少,180 d和240 d上皮基底形成一层柱状细胞;上皮表层在120 d有脱落细胞,180 d和240 d上皮轻度角化;应用显微测微尺测得黏膜上皮厚度、肌层厚度、乳头高度和乳头宽度从40 d到240 d依次增加,黏膜上皮厚度和乳头宽度变化不明显。说明舍饲滩羊网胃壁组织形态随日龄增加都有不同程度的变化,所测定各日龄上皮角化不明显。 相似文献
4.
通过５例成年健康罗曼鸡消化道的组织学观察，结果表明，１）食管粘膜的复层扁平上皮基底层细胞嵌入固有膜，形成特特殊的“表皮钉”形状。２）鸡的前胃仅有深层的复管腺一种，而不存在浅层的单管腺。３）前胃腺位于粘膜下层，而肌层由内纵、中环、外纵三层平滑肌构成。４）小肠的肠腺内似有潘氏细胞的存在。 相似文献
5.
本试验旨在研究水牛初乳粉、常乳粉对0～72 h新生仔猪小肠组织形态结构发育的影响。试验以新生仔猪为研究对象,分别饲喂水牛初乳粉（SCR组）、水牛常乳粉（SC组）、葡萄糖盐水（PY组）,以0日龄新生仔猪（XD组）作为对照。结果表明,水牛初乳粉使新生仔猪小肠绒毛密集、粗壮、排列整齐,肌层厚度、固有膜厚度增加。SCR组与XD组相比,十二指肠绒毛高度、绒毛宽度、固有膜厚度和空肠绒毛宽度、肌层厚度及回肠绒毛高度均极显著增加（P＜0.01）;SCR组与PY组相比,十二指肠绒毛宽度及空肠绒毛宽度、肌层厚度均极显著增加（P＜0.01）。水牛常乳粉使新生仔猪小肠黏膜受损,黏膜上皮脱落,肌层变薄,固有膜裸露,小肠绒毛坍塌、稀疏变短。SC组与XD组相比,十二指肠肌层厚度和空肠绒毛高度、绒毛宽度、肌层厚度、固有膜厚度及回肠绒毛宽度、固有膜厚度均呈降低趋势,但差异均不显著（P＞0.05）;SC组与PY组相比,空肠肌层厚度显著降低（P＜0.05）。综上所述,水牛初乳粉能显著促进新生仔猪小肠发育,尤其对空肠影响最大,其次为十二指肠,而对回肠的影响相对较小;水牛常乳粉不能对新生仔猪肠黏膜形成保护并促进其生长发育,在新生仔猪最初发育的72 h内其价值不如葡萄糖盐水。 相似文献
6.
东方白鹳消化器官的组织学研究（一） 总被引：2，自引：0，他引：2
采用石蜡切片,HE染色法,对四只成年东方白鹳的消化器官进行了组织学研究。发现一些明显的特点。东方白鹳无嗉囊,其食管为一直行管道。在中、下段食管粘膜上皮表面有一层均质的粉红色分泌物覆盖。上段食管的固有膜内有食管腺分布,但中、下段食管则没有食管腺分布。在食管与腺胃交界处管壁的固有膜内有明显的盲囊状结构,其囊腔与该交界处的管腔直接相通。腺胃明显大于其它家禽的腺胃。粘膜乳头多而密集。有发达的胃腺。 相似文献
7.
8.
驯鹿支气管的组织结构清晰，分为粘膜层、粘膜下层和外膜，粘膜层由粘膜上皮和固有膜构成，粘膜下层含气管腺；外膜未见软骨组织，驯鹿的肺外表面被覆一层浆膜，肺实质除间质组织外，由肺内的导管部和呼吸部构成，肺内的导管外膜未见到软骨组织，导管部粘膜皱臂发达，粘膜肌层厚。呼吸部肺泡Ⅱ型细胞相对较多。 相似文献
9.
选用96只(28±2)日龄实验用清洁级SD大鼠,随机分为6组(对照组,试验Ⅰ～Ⅴ组),每组16只,雌雄各半,分别饮用添加0、40、80、160、320、640mg/L硼的饮水2个月。试验结束时,10%水合氯醛腹腔麻醉,立即解剖取舌体和胃壁,制作石蜡切片,光镜观察各组大鼠舌和胃黏膜组织结构变化并摄影。结果显示,试验Ⅰ、Ⅱ组大鼠舌和胃黏膜组织结构发育良好,舌黏膜丝状乳头明显增高、增粗,菌状乳头增宽,味蕾体积增大,结构完好;胃底腺体部壁细胞数量增多、排列紧密。试验Ⅲ～Ⅴ组大鼠舌和胃黏膜组织结构受到不同程度损伤,其中试验Ⅴ组的病理组织学变化最为严重,光镜下其舌黏膜丝状乳头数量减少,顶部多溶解消失,菌状乳头狭窄,味蕾萎缩,味蕾细胞数量稀少、结构模糊;胃黏膜受损严重,有的大鼠胃黏膜无腺部的复层扁平上皮出现增生现象,有的大鼠贲门腺区黏膜的单层柱状上皮化生为复层上皮;胃底腺区黏膜上皮细胞变性、坏死、甚至脱落,胃小凹结构消失,胃底腺萎缩,腺腔扩张且不规则,壁细胞和主细胞明显萎缩,胞核固缩,细胞和胞核体积大小不一。结果表明,饮水适量添加硼对大鼠舌和胃黏膜的组织结构与功能有较明显的促进与改善作用;添加高剂量硼,则有不同程度的损伤,甚至表现出明显的毒性作用。 相似文献
10.
试验旨在研究不同粗饲料及其加工方式对犊牛生产性能和瘤胃组织形态的影响。选取健康、体重（43.5±3.4）kg的新生荷斯坦公犊牛40头，随机分为4组，每组10头牛，分别饲喂切短苜蓿、颗粒苜蓿、切短燕麦和颗粒燕麦，自由采食。试验自15日龄至56日龄。结果表明：粗饲料种类对犊牛各生长性能指标均无显著影响；苜蓿组犊牛的体高（45日龄）和瘤胃腹囊肌层厚度高于燕麦组（P<0.05）；粗饲料加工方式对体重无显著影响，但颗粒组犊牛各阶段干草采食量（P<0.01）和15～30日龄的日均总干物质采食量以及瘤胃背囊乳头长度均高于切短组（P<0.05），切短组犊牛46～56日龄和全期的开食料采食量（P<0.01）、15～30日龄和46～56日龄的平均日增重（P<0.05）、45日龄和56日龄时的体斜长和胸围（P<0.05）、瘤胃腹囊肌层厚度（P<0.05）均高于颗粒组；粗饲料种类和加工方式互作对犊牛各生长性能指标和体尺指标均无显著影响，但切短苜蓿组瘤胃腹囊肌层厚度高于其他三组（P<0.05）。由此可见，补饲切短干草可显著提高犊牛开食料采食量、平均日增重及断奶后体... 相似文献
11.
Rezaian M 《Anatomia, histologia, embryologia》2006,35(4):241-246
Histology of the tongue, including apex, root and body, in four adult Caspian miniature horses was examined. Serial sections with 6 mum thickness were stained with haematoxylin-eosin and Masson trichrome and studied under light microscope. The tongue was covered by stratified squamous epithelium. It was thick and keratinized bearing numerous lingual papillae on the dorsum, mostly filiform with a very fine keratinized thread projecting above the surface and bending backward. The fungiform papillae were sparsely scattered among the filiform papillae and covered with keratinized squamous epithelium. Few taste buds were detected on it. The two very large vallate papillae were detected on the dorsum, just rostral to the root, which were covered with stratified squamous epithelium with relatively high amounts of taste buds in the epithelium of the surrounding grooves. The foliate papillae were present near the palatoglossal arch and had a few taste buds. The epithelium covering the ventral surface of the tongue was thin and keratinized. The lingual muscle core consisted of transverse, longitudinal and perpendicular bundles of skeletal muscle fibres. Clusters of minor salivary glands were present between the muscle fibres and lamia propria. Most of the lingual glands were mucous and most of the gustatory ones were serous type. The mid-dorsal special structure of the tongue (dorsal lingual cartilage) contained sparse skeletal muscle fibres and was rich in white adipose tissue. Hyaline cartilage, routinely observed in this structure in the horses, was not detected in Caspian miniature horse. 相似文献
12.
Morphological Studies of the Tongue of the Egyptian Water Buffalo (Bubalus bubalis) and Their Lingual Papillae Adaptation for Its Feeding Habits 
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下载免费PDF全文 This work was conducted to describe the morphological characters of the tongue of Egyptian water buffalo (Bubalus bubalis). The lingual root and the dorsal middle region of apex and body in addition to the dorsal and ventral surface of lingual tip were devoided from any fungiform papillae. The lingual tip contains conical papillae only. The ventral surface of lingual apex was divided into two portions by the U‐shaped fungiform line into papillary and non‐papillary region. Histological investigation on the lingual surface epithelium and lamina propria submucosa reflects differences in these layers in different parts of the tongue. By SEM, there are two subtypes of filiform papillae: caudally directed papillae on dorsal surface and rostrally directed papillae on the lateral region of ventral surface of lingual apex. There are two subtypes of conical papillae: small slightly rostrally directed papillae on dorsal and ventral surface of lingual tip and large posteromedially directed papillae on dorsal surface of lingual root. The rounded circumvallate papillae consisted of round bulb surrounded by deep circular groove, which surrounded by circular pad. Higher magnification of filiform papillae indicates the presence of microcrests separated by microgrooves, and these microgrooves consisted of microrodes. The fungiform surface having micropores on the tip of elevated tubercle for taste buds pores. All these observed structures (microcrests, microgrooves, microrodes, tubercles, microridges) in a higher magnification allow animals to transport food particles through the oral cavity and help in the defensive behaviour. There are strong correlations between the tongue anatomical characteristics and its functions. 相似文献
13.
The morphology of the tongue of the adult barking deer, Muntiacus muntjak, was examined by light and scanning electron microscopy. The result showed that the tongue of the barking deer was elongated with a rounded apex. Four types of lingual papillae were observed: filiform, fungiform, vallate and large conical papillae. The filiform papillae represented the most numerous types of lingual papillae. The fungiform papillae were distributed among the filiform papillae on the rostral and the body portions of the tongue. Ten to thirteen vallate papillae were distributed on both sides of the lingual prominence among the large conical papillae. Histologically, both the fungiform and vallate papillae contain taste buds in the epithelial layer. The distribution and types of lingual papillae found in the barking deer are similar to those in the other species that belong to the family Cervidae. 相似文献
14.
E. J. Benetti L. C. Pícoli J. P. Guimarães A. A. Motoyama M. A. Miglino L.-S. Watanabe 《Anatomia, histologia, embryologia》2009,38(1):42-48
The study of lingual surfaces and the surface of interface epithelium-connective tissue of the tongue of Bradypus torquatus was performed by employing the light and scanning electron microscopy (SEM) techniques. The results revealed that the rostral part of the tongue presents a round apex and covered by filiform and fungiform lingual papillae and a ventral smooth surface. It was observed that the epithelial layer of the dorsal surface possesses the basal, spinosum, granular and cornified epithelial cells. The lamina propria is characterized by a dense connective tissue forming the long, short and round papillae. Numerous typical filiform papillae are located especially in the rostral part intermingled for few fungiform papillae, which were revealed in three-dimensional SEM images. Usually, the fungiform papillae are located in the border of rostral apex of the tongue exhibiting the rounded form. They are covered by keratinized epithelial cells. In the fungiform papillae, several taste pores were observed on the surface. The vallate papillae presented numerous taste buds in the wall of epithelial cells, being that the major number of taste buds is located on the superior half of vallate papilla. The taste pores are surrounded by several laminae of keratinized epithelial cells. The samples treated with NaOH solution and examined by SEM revealed, after removal of the epithelial layer, the dense connective core in original disposition, presenting different sizes and shapes. The specimens stained with Picrosirius and examined by polarized light microscopy revealed the connective tissue, indicating the collagen fibres type I and type III. 相似文献
15.
The dorsal lingual surfaces of infant Japanese macaque (Macaca fuscata) and adult savanna monkey (Cercopithecus aethiopus) were examined by scanning electron microscopy. Filiform, fungiform, foliate and vallate papillae were found. The filiform papillae were distributed over the entire dorsal surface of the tongue. The fungiform papillae were round in shape, and more densely distributed on the lingual apex. The foliate papillae were seen on the dorsolateral aspect of the tongue. The three vallate papillae were arranged like a triangle with the apex of the triangle directing caudally. Each papilla was surrounded by a groove. The rudiments of the fungiform, foliate and vallate papillae were visible earlier than those of the filiform papillae. 相似文献
16.
The dorsal lingual surface of a black rhinoceros (Diceros bicornis) was examined by scanning electron microscopy. The tongue was about 30 cm in length. There were about 60 vallate papillae on both sides. Filiform, fungiform and vallate papillae were found. The filiform papillae were distributed over the entire dorsal surface of the tongue. The papillae had a hair-like shape. The fungiform papillae were round in shape, and more densely distributed on the lingual apex. No foliate papillae were seen on the dorsal surface. The vallate papillae were located on both sides of the posterior end of the lingual body. Each papilla was surrounded by a groove. 相似文献
17.
Jackowiak H Godynicki S Jaroszewska M Wilczyńska B 《Anatomia, histologia, embryologia》2004,33(5):290-293
The dorsal surface of the tongue of the adult common shrew (Sorex araneus L.) was examined by scanning electron microscopy. As in the other insectivores, three types of lingual papillae were observed: filiform, fungiform and vallate papillae. The filiform papillae represented the most numerous type of lingual papillae. The characteristic feature of the filiform papillae, covering the apex and corpus of the tongue, is the two processes tilted to the root of the tongue. The filiform papillae on the lingual apex are reduced in size and structure. Five to six fungiform papillae are placed symmetrically along the left and right border of the corpus of the tongue. Two large oval vallate papillae are located on the radix of the tongue. The posterior surface of the tongue in common shrew is covered with a smooth mucosa with the openings of the serous glands. 相似文献
18.
Morphogenesis of lingual papillae of one‐humped camel (Camelus dromedarius) during prenatal life: A light and scanning electron microscopic study 下载免费PDF全文
下载免费PDF全文 A. S. Abou‐Elhamd M. Abd‐Elkareem A. El‐Zuhry Zayed 《Anatomia, histologia, embryologia》2018,47(1):38-45
This study was made on 24 camel fetuses of crown‐rump vertebral length (CVRL) ranging from 10.5 cm to 105 cm CVRL (94–352 days old). These camel fetuses were classified into three groups representing the three trimesters of prenatal life. During the first trimester (94–142 days), lingual papillae (circumvallate and lentiform papillae) were demonstrated on the lingual root, but lingual body and the apex were almost free of papillae except for some scattered epithelial projections especially near the lateral borders of the body. In the second trimester (152–229 days), the lentiform papillae covered the entire root of the tongue except for areas occupied by the circumvallate papillae. Taste buds with clear pores were observed for the first time in areas between the circumvallate gustatory furrow and surface epithelium of the tongue. In addition, short numerous filiform papillae were observed on the rostral part of the lingual body and the lateral parts of the apex. Fungiform papillae, however, were demonstrated amidst the filiform papillae. In this trimester, taste buds were also seen on the top of the fungiform papillae. In the third trimester (256–352 days), all lingual papillae were clearly demonstrated on the dorsum of the root, body and apex of the tongue. Both types of gustatory papillae (circumvallate and fungiform) had well‐developed taste buds. Mechanical papillae (filiform and lentiform) were well developed. Lentiform papillae occupied most of the dorsal aspect of the Torus linguae; they were larger in size with semicircular apices. Filiform papillae, however, were numerous and demonstrated heavily on the lateral and rostral parts of the body as well as on the apex of the tongue. 相似文献
19.
The African giant pouched rat is a nocturnal, fossorial and omnivorous wild rodent widely distributed in sub‐Saharan Africa. The morphology of lingual surface has not previously examined and was investigated by gross dissection, stereomicroscopy, scanning electron and light microscopy. Grossly, it was elongated and dorso‐ventrally flattened with rounded tip. It measured 3.48 ± 0.33 cm in length, with a median groove of 1.4 ± 0.1 cm in length and well‐developed lingual prominence. Stereomicroscopically, filiform, fungiform and vallate papillae were indicated in the apex, body and root. Fungiform papillae intermingled with filiform on the ventral and dorsal surface of the apex and body. Three vallate papillae were located in triangular arrangement on the root. The surface ultrastructural features distinguished four types of filiform which varied in size, shape and distribution: first type with long pointed process was preponderant on the apex and body of tongue; the second with robust base was located on central lingual prominence; the third (caudal body) was conically shaped with pointed process; and the fourth type (root) had forked filamentous process. Large oval‐shaped fungiform papillae were apparent. Each vallate was surrounded by a circumferential groove into which taste pores opened. Histologically, the tongue surface displayed moderately keratinized stratified squamous epithelium, and lamina propria that varied in places. Fungiform and vallate showed spindle‐shaped taste buds. Serous and mucous acini containing neutral and acidic mucins were observed in lamina propria of root. The structural adaptations of the tongue to omnivorous diet and food manipulation in oral cavity were comparatively discussed. 相似文献
20.
Gross and microscopic observations on the lingual structure of the Florida Manatee Trichechus manatus latirostris 总被引：1，自引：0，他引：1
The tongue of the Florida manatee (Trichechus manatus latirostris) was studied macroscopically, light and electron microscopically. The tongue was slender, muscular and firmly fixed in the oral cavity; only the cranial tip was free and mobile. Numerous filiform papillae were distributed over the dorsal surface of the rostral tongue. Multiple raised, round fungiform-like papillae were distributed over most of the dorsum. Typical fungiform papillae were restricted to the lateral margins of the tongue. Foliate papillae, presenting as multi-fossulate openings, were noted on the caudolateral margins. Open pits were located on the dorsocaudal surface and lateral walls. Microscopic examination showed that most of the lingual dorsum was covered with a thick stratified squamous epithelium. Open pits led to well-developed mucous salivary glands. Glands within the foliate papillae were mostly mucous, although some seromucous glands were present. Taste buds were restricted to the epithelium of the foliate papillae. Throughout the tongue, striated muscle was abundant below the epithelium. Blood vessels, lymph channels and nerve fibres were freely distributed throughout the intermuscular stroma. Nerve fibres reacted positively with neurone specific enolase (NSE) antibody throughout the tongue, including nerve bundles, glands and taste buds. Clear to translucent vacuoles were found juxtaposed to nuclei in the stratum spinosum in the foliate papillae epithelium. 相似文献