解剖学和形态学
麻醉学
听力与言语-语言病理学
行为科学
心脏和心血管系统
细胞和组织工程学
临床神经病学
危重症监护医学
牙科,口腔外科和医学
皮肤病学
急诊医学
内分泌学和新陈代谢
肠胃学和肝脏学
老人病学和老年医学
卫生保健科学和服务
血液学
免疫学
传染病
综合和补充性医学
医学伦理学
医学信息学
医学实验室技术
医学,全科和内科
医学,法律
医学,研究和试验
神经系统科学
护理
营养学和饮食学
产科医学和妇科医学
肿瘤学
眼科学
整形外科学
耳鼻喉科学
病理学
儿科学
周围血管疾病
药理学和药剂学
生理学
基本医疗保健
精神病学
公共、环境和职业卫生
放射学,核医学和医学成像
康复学
生殖生物学
呼吸系统
风湿病学
运动科学
外科学
毒理学
热带医学
泌尿学和肾脏学
病毒学
老年医学
健康政策和服务
心理学,临床
abstract::The theory of Kukalova-Peck ('78) is examined and rejected except for the hypothesis of the partially pleural origin of wings. Data suggest that the arthropods ancestral to insects left the water, and that movable precursors of the wings, possibly exopodites, were immobilized and fused with the tergum to form part of ...
journal_title:Journal of morphology
pub_type: 杂志文章
doi:10.1002/jmor.1051680309
更新日期:1981-06-01 00:00:00
abstract::A table of development (25 stages) for the period of incubation in the pouch was constructed for Gastrotheca riobambae; it can be used to stage embryos of other egg-brooding hylids. Analysis of embryonic weights during incubation shows that the mother does not contribute nutrients, but gases and other factors are prob...
journal_title:Journal of morphology
pub_type: 杂志文章
doi:10.1002/jmor.1051670303
更新日期:1981-03-01 00:00:00
abstract::The use of hormone replacement to support limb regeneration in hypophysectomized newts has been the subject of many investigations. Growth hormone, as well as prolactin (PL) in combination with exogenously supplied thyroxine, have all been shown to he effective. However, the bovine growth hormone used to support limb ...
journal_title:Journal of morphology
pub_type: 杂志文章
doi:10.1002/jmor.1051670109
更新日期:1981-01-01 00:00:00
abstract::The external surface of the cornea and adjacent epidermis of larvae in representative developmental stages and of adult frogs, Rana pipiens, was studied by scanning electron microscopy. Surface cells are polygonal, usually hexagonal, in outline and covered with microprojections. During larval development prior to meta...
journal_title:Journal of morphology
pub_type: 杂志文章
doi:10.1002/jmor.1051660305
更新日期:1980-12-01 00:00:00
abstract::Intercellular bridge development was compared in Ceropia by transmission electron microscopy in the germ cells of males and females. Bridge formation begins in the fourth instar, and the spindle remnants in newly formed bridges are replaced at this time by an amorphous material known as the fusome. In the four- and ei...
journal_title:Journal of morphology
pub_type: 杂志文章
doi:10.1002/jmor.1051660104
更新日期:1980-10-01 00:00:00
abstract::Sixty-seven specimens of the common North Atlantic asteroid, Asterias vulgaris, were collected at seasonal intervals over a 2-year period and their testes observed with both light and electron microscopy. In the germinal epithelium, a predictable series of interactions between versatile somatic cells and germinal cell...
journal_title:Journal of morphology
pub_type: 杂志文章
doi:10.1002/jmor.1051660107
更新日期:1980-10-01 00:00:00
abstract::It is well established that the capacity for teeth to differentiate "in vitro" depends upon: a) the age of the embryonic rudiments at the time of excision and b) the number of cells within each tissue type which are capable of differentiating into organ culture. This paper studies ultrastructural aspects of tooth buds...
journal_title:Journal of morphology
pub_type: 杂志文章
doi:10.1002/jmor.1051650302
更新日期:1980-09-01 00:00:00
abstract::Statoblasts of five higher phylactolaemates were compared morphologically. As a result, they were divided into two groups: Group I comprising Lophopus crystallinus, Lophopodella carteri, and Pectinatella gelatinosa, and Group II comprising Pectinatella magnifica and Cristatella mucedo. These two groups are thought to ...
journal_title:Journal of morphology
pub_type: 杂志文章
doi:10.1002/jmor.1051650203
更新日期:1980-08-01 00:00:00
abstract::The ventral surface of the most proximal tarsomere of each mesothoracic leg of the female black fly, Simulium venustum Say, bears approximately 60 bifurcate sensilla. Externally, a sensillum appears as a hair set into an asymmetric socket and with the distal tip flattened into two flared lobes. A single pore opens int...
journal_title:Journal of morphology
pub_type: 杂志文章
doi:10.1002/jmor.1051650102
更新日期:1980-07-01 00:00:00
abstract::The dermopteran basicranium combines a primitively constructed and oriented auditory bulla formed by ectotympanic, rostral entotympanic, and tubal cartilage with derived features of the middle ear transformer and internal carotid circulation. Living dermopterans possess a primitive eutherian auditory region that has b...
journal_title:Journal of morphology
pub_type: 杂志文章
doi:10.1002/jmor.1051640206
更新日期:1980-05-01 00:00:00
abstract::The paired Y-organs of crustaceans control the molting process. In males of C. antennarius, these glands are opalescent, lobulated, epithelioid structures embedded in brown fatty tissue. Cells in the periphery extend processes to the connective tissue capsule, an arrangement that suggests increased surface area for me...
journal_title:Journal of morphology
pub_type: 杂志文章
doi:10.1002/jmor.1051630205
更新日期:1980-02-01 00:00:00
abstract::As part of a study of ulcer formation and healing, regeneration of colonic mucosa in rats was studied following placement of a surgical lesion. Alterations in mucosubstances and connective tissue were examined and their possible significance discussed. The sequence of events in healing was: 1) The mucosa adjacent to t...
journal_title:Journal of morphology
pub_type: 杂志文章
doi:10.1002/jmor.1051630208
更新日期:1980-02-01 00:00:00
abstract::New schemata of the liver are presented to discuss the combination of the three kinds of liver lobules known until today in a chalk-talk-manner. Terminology is also discussed. Further investigations are needed involving the construction and the vascular pattern of compound lobules of the three individial lobules of th...
journal_title:Journal of morphology
pub_type: 杂志文章
doi:10.1002/jmor.1051620204
更新日期:1979-11-01 00:00:00
abstract::The role of dying cells in the optic stalk in relation to retinal fiber migration was investigated in the chick embryo. Cell death was analysed at various stages of development by counting pycnotic nuclei and also by the Gomori acid phosphatase reaction, while nerve fibers were visualised by the Bodian method. A wave ...
journal_title:Journal of morphology
pub_type: 杂志文章
doi:10.1002/jmor.1051620105
更新日期:1979-10-01 00:00:00
abstract::The combined techniques of light microscopy, scanning (SEM) and transmission (TEM) electron microscopy were used for the first time to study the structure of unicameral lungs of a Tegu lizard (Tupinambis nigropunctatus). The lungs are prolate spheroid bags with blood supplied by superficial branches of a dorsal pulmon...
journal_title:Journal of morphology
pub_type: 杂志文章
doi:10.1002/jmor.1051610303
更新日期:1979-09-01 00:00:00
abstract::The cellular populations present in dorsomedial cortex in the snakes Constrictor constrictor, Natrix sipendon and Thamnophis sirtalis are described at the light microscopic level using Nissl and Golgi preparations as well as at the ultrastructural level. This area plays a central role in cortical organization in snake...
journal_title:Journal of morphology
pub_type: 杂志文章
doi:10.1002/jmor.1051610207
更新日期:1979-08-01 00:00:00
abstract::The mouthparts of female Corethrella brakeleyi and C. wirthi were studied using light and electron microscopy. Mandibles, hypopharynx and labium are highly sclerotized and are modified for obtaining blood meals. All structures were larger in C. brakeleyi than in C. wirthi except mandibular and hypopharyngeal teeth; th...
journal_title:Journal of morphology
pub_type: 杂志文章
doi:10.1002/jmor.1051610204
更新日期:1979-08-01 00:00:00
abstract::A biomechanical model of the jaw mechanism in some reptiles is presented. Symmetrical muscle activity that produces equal forces on both sides of the head is assumed. The model predicts the position of the most posterior bit point and offers a functional explanation for this prediction. Turtles are used to illustrate ...
journal_title:Journal of morphology
pub_type: 杂志文章
doi:10.1002/jmor.1051600204
更新日期:1979-05-01 00:00:00
abstract::The structure of contact chemoreceptors in the cibariopharyngeal pump of the moth Trichoplusia ni (Lepidoptera: Noctuidae) is described. Two types of receptors designated A and B are located on the floor of the pump. Two groups of 9-12 A receptors are located in the anterior part of the pump, and two groups of two B r...
journal_title:Journal of morphology
pub_type: 杂志文章
doi:10.1002/jmor.1051600103
更新日期:1979-04-01 00:00:00
abstract::Branchial food traps are regions of specialized secretory tissue in the tadpole pharynx, where suspended food particles are trapped in mucus. Light and scanning electron microscopy were used to study branchial food traps from larvae of ten anuran families (36 species). Most anuran larvae from "advanced" (suborder Neob...
journal_title:Journal of morphology
pub_type: 杂志文章
doi:10.1002/jmor.1051590307
更新日期:1979-03-01 00:00:00
abstract::Early spermatids of the onychophoran Peripatopsis capensis are spherical cells with a centrally located nucleus, numerous mitochondria, Golgi complexes, microtubules and two centrioles. During spermiogenesis, Golgi vesicles migrate to one side of the cell where they form a tight aggregate, which is later shed. The mat...
journal_title:Journal of morphology
pub_type: 杂志文章
doi:10.1002/jmor.1051590104
更新日期:1979-01-01 00:00:00
abstract::Early embryonic mitosis of the silkworm, Bombyx mori, was morphologically studied in the normal eggs and in the eggs treated by low temperature (-10°C). The first embryonic mitosis is observed in the eggs at 120 to 150 minutes after deposition at 26°C. After egg and sperm pronuclei unite, a spindle is formed in each o...
journal_title:Journal of morphology
pub_type: 杂志文章
doi:10.1002/jmor.1051580106
更新日期:1978-10-01 00:00:00
abstract::The olfactory system of the pigeon (Columba livia) was examined. Our electrophysiological and experimental neuroanatomical (Fink-Heimer technique) data showed that axons from the olfactory bulb terminated in both sides of the forebrain. The cortex prepiriformis (olfactory cortex), the hyperstriatum ventrale and the lo...
journal_title:Journal of morphology
pub_type: 杂志文章
doi:10.1002/jmor.1051580105
更新日期:1978-10-01 00:00:00
abstract::The larval epithelium of the sea urchin, Lytechinus pictus, consists of squamous cells and bands of columnar epithelial cells bearing cilia. During metamorphosis this tissue undergoes a series of rapid, complex changes. Through the scanning and transmission electron microscope, we describe and analyse these changes. T...
journal_title:Journal of morphology
pub_type: 杂志文章
doi:10.1002/jmor.1051570103
更新日期:1978-07-01 00:00:00
abstract::The process of coelomic pouch formation in Pisaster ochraceus was studied with light microscopy, transmission and scanning electron microscopy and time-lapse cinemicrography as well as with the drug cytochalasin B. As in most asteroids, the paired coelomic pouches of Pisaster ochraceus are formed from outpocketing of ...
journal_title:Journal of morphology
pub_type: 杂志文章
doi:10.1002/jmor.1051570107
更新日期:1978-07-01 00:00:00
abstract::The fine structure of the mid-gut musculature of the desert locust, Schistocerca gregaria is described and compared with that of the visceral muscles of other species. The gross morphology and fine structure of the nervous system which supplies the mid-gut muscle fibres is described. ...
journal_title:Journal of morphology
pub_type: 杂志文章
doi:10.1002/jmor.1051560208
更新日期:1978-05-01 00:00:00
abstract::This research was designed to follow up the observation of Thornton and Kraemer ('51) that regressed, denervated limbs of Ambystoma larvae will not regenerate upon reinnervation if all digits on the limbs were not completely resorbed. The object of this experiment was to determine whether the presence of an apical str...
journal_title:Journal of morphology
pub_type: 杂志文章
doi:10.1002/jmor.1051540204
更新日期:1977-11-01 00:00:00
abstract::This descriptive electron microscopic study of the blastogenetic medusa development of Podocoryne carnea focuses on the earliest stages of primordium formation, myogenesis, oogenesis and cnidogenesis. The events which take place at the cellular level prior to the formation of stage 1 (Frey, '68), which are characteriz...
journal_title:Journal of morphology
pub_type: 杂志文章
doi:10.1002/jmor.1051540206
更新日期:1977-11-01 00:00:00
abstract::The fine structural characteristics of epithelial cells of the anal vesicle in the hymenopteran parasitoid, Microplitis croceipes (Cresson), are similar to those of transport cells. Apical and basal infoldings, an abundance of mitochondria, ribosomes, rough endoplasmic reticulum, Golgi complexes and pinocytotic vesicl...
journal_title:Journal of morphology
pub_type: 杂志文章
doi:10.1002/jmor.1051540205
更新日期:1977-11-01 00:00:00
abstract::Timed-sequence studies have shown that reticulate scales on the ventral footpads of birds do not undergo "epidermal placode" formation during their morphogenesis, but arise as symmetrical evaluations similar to the scales of snakes and lizards. Unlike the scutellate scales on the dorsal surface of the foot, in which t...
journal_title:Journal of morphology
pub_type: 杂志文章
doi:10.1002/jmor.1051540106
更新日期:1977-10-01 00:00:00
abstract::Newly metamorphosed Kenyan reed frogs, Hyperolius viridiflavus ferniquei, are able to regenerate amputated digits. The terminal digital pad is also completely reformed. Differentiation of the regenerating digital pad was studied by scanning electron microscopy. External differentiation of the digital pad began late in...
journal_title:Journal of morphology
pub_type: 杂志文章
doi:10.1002/jmor.1051530305
更新日期:1977-09-01 00:00:00
abstract::The objectives of this research were to investigate the morphology of the thoracic skeleton and muscles of the mosquito, Culiseta inornata (Williston). The results are presented in 25 text figures and descriptions of each skeletal part and muscle. Undescribed exoskeletal structures are the postmediotergite, intersegme...
journal_title:Journal of morphology
pub_type: 杂志文章
doi:10.1002/jmor.1051530308
更新日期:1977-09-01 00:00:00
abstract::A description of the external morphogenesis of male and female embryos of X. ferrugineus, derived from in vivo observation, is presented here. The embryogenesis of this beetle is typical of the Coleoptera, and is also similar in most respects to the generalized insect plan. Observed unusual aspects of X. ferrugineus e...
journal_title:Journal of morphology
pub_type: 杂志文章
doi:10.1002/jmor.1051520205
更新日期:1977-05-01 00:00:00
abstract::Correlative studies of luminescent responses, light and electron microscopy of Porichthys photophores during development were conducted. The photophores differentiate as an outgrowth of the basal cell layer of the epidermis, from which they delaminate into the dermis. Reflector cells are formed from dermal fibroblasts...
journal_title:Journal of morphology
pub_type: 杂志文章
doi:10.1002/jmor.1051510305
更新日期:1977-03-01 00:00:00
abstract::Homolid crabs (Hypsophrys) from water deeper than 700 m in the Straits of Florida and Arabian Sea have smooth darkened oval spots contrasting with the surrounding roughened integument on inner and outer surfaces of each pincer at the base of the fixed finger. Cuticle is thinner over these spots than over surrounaing t...
journal_title:Journal of morphology
pub_type: 杂志文章
doi:10.1002/jmor.1051500407
更新日期:1976-12-01 00:00:00
abstract::The ultrastructure of a well studied insect chemosensory unit is presented in this report. Two separate lumina are present in this chemosensory unit, the trichogen and sensillar lumina. The fluid within the trichogen lumen exclusively bathes the dendritic terminals, and may be involved with the reception and/or modula...
journal_title:Journal of morphology
pub_type: 杂志文章
doi:10.1002/jmor.1051500308
更新日期:1976-11-01 00:00:00
abstract::The fine structure of midgut cells in two species of Cladocera (Crustacea: Branchiopoda) has unique features when it is compared to that in the midguts of other arthropods. Features which suggest that food is absorbed in digested form are: the presence of the peritrophic membrane, the glycocalyx, the almost complete a...
journal_title:Journal of morphology
pub_type: 杂志文章
doi:10.1002/jmor.1051500306
更新日期:1976-11-01 00:00:00
abstract::The pineal complex of the lanterfish Triphoturus mexicans was studied by light and electron microscopy. Receptor, supportive and ganglion cells were identified in the pineal end-vesicle. The presence of receptor cells and the prominent pineal window strongly suggest a photoreceptor function. Numerous unmyelinated nerv...
journal_title:Journal of morphology
pub_type: 杂志文章
doi:
更新日期:1976-10-01 00:00:00
abstract::Sexual dimorphism in the distribution of antennal sense organs is common among adults of the genus Periplaneta. In three out of the four strains of Periplaneta americana examined, adult males had more contact chemoreceptros than females. In the fourth strain of P. americana and in P. australasiae, P. brunnea, P. fulig...
journal_title:Journal of morphology
pub_type: 杂志文章
doi:10.1002/jmor.1051490202
更新日期:1976-06-01 00:00:00
abstract::The functional anatomy of the hindlimb of 12 species of viverrids was studied with relation to locomotion. The animals were allocated to primary locomotor categories on the basis of their anatomy and locomotion. The climbing, arboreal walking category (Nandinia binotata) is characterized by a small sacroiliac articula...
journal_title:Journal of morphology
pub_type: 杂志文章
doi:10.1002/jmor.1051480208
更新日期:1976-02-01 00:00:00