Wing design and morphology of the harbor porpoise dorsal fin.

abstract：:This study examines the morphology of sporadic congenital microphthalmia in 1-day-old chicks, with particular emphasis on the neural retina. On the basis of the size of the eyeball it is possible to classify microphthalmia into two groups, severe and mild. In severe microphthalmia (less than 5 mm in equatorial diamete...

journal_title：Journal of morphology

authors： Ehrlich D,Stuchbery J,Zappia J

更新日期：1989-01-01 00:00:00

abstract：:The appearance, cellular distribution, and changes of sugar residues during tooth development in adults of the polyphyodont, Liolaemus gravenhorsti, were investigated by using horseradish-peroxidase-conjugate lectins (lectin-HRP). With Con A (Canavalia ensiformis), the ameloblasts (late bell stage) show granular supra...

journal_title：Journal of morphology

authors： Lemus D,Cabello R,Lemus R,Soto M,Fuenzalida M

更新日期：1994-12-01 00:00:00

abstract：:Eggs of Xenopoecilus sarasinorum possess two distinct types of filaments on the surface of the egg envelope (chorion), long, attaching filaments restricted to the vegetal pole and weak, nonattaching filaments around the animal pole (micropyle). Both types are formed during oogenesis. After mature eggs were spawned thr...

journal_title：Journal of morphology

authors： Iwamatsu T,Kobayashi H,Sato M,Yamashita M

更新日期：2008-06-01 00:00:00

abstract：:The enteric nervous system consists of a number of interconnected networks of neuronal cell bodies and fibers as well as satellite cells, the enteric glia. Basic fibroblast growth factor (bFGF) is a mitogen for a variety of mesodermal and neuroectodermal-derived cells and its presence has been described in many tissue...

journal_title：Journal of morphology

authors： Chadi G,Gomide VC,Rodrigues de Souza R,Scabello RT,Maurício da Silva C

更新日期：2004-09-01 00:00:00

abstract：:The skull of the rare bolyeriid snake Casarea dussumieri is described in detail based on high-resolution X-ray CT data. Bolyeriids are unique in their possession of a separate suborbital ossification and a maxilla subdivided into two movably jointed parts, which may be the result of paedomorphic truncation of the deve...

journal_title：Journal of morphology

authors： Maisano JA,Rieppel O

更新日期：2007-05-01 00:00:00

abstract：:Nematocytes containing microbasic mastigophores are intimately associated with accessory cells in the epidermis of Chironex fleckeri. Large microbasic mastigophores may be surrounded by seven to nine such cells. Each accessory cell possesses an apical portion containing secretory droplets and a basal portion which car...

journal_title：Journal of morphology

authors： Rifkin JF,Endean R

更新日期：1988-01-01 00:00:00

abstract：:Interspecific variations in rhabdom structure between various oplophorid shrimps are described and the differences are related to the light environment at different depths within the mesopelagic zone. The ultrastructure of the distal rhabdom in these species is described for the first time. Quantitative measurements s...

journal_title：Journal of morphology

authors： Gaten E,Shelton PM,Nowel MS

更新日期：2003-07-01 00:00:00

abstract：:The morphology and probable evolution of the depressor muscles of the lower jaw, innervated by the seventh cranial nerve (VII;M. Ceratomandibularis, M. Depressor Mandibulae), in larval, neotenic, and metamorphosed Urodela were investigated. Observations on innervation and skeletal connections of the muscles were inclu...

journal_title：Journal of morphology

authors： Bauer WJ

更新日期：1997-07-01 00:00:00

abstract：:The tubular accessory gland consists of a simple secretory epithelium surrounded by a muscular coat. Over the pupal instar, the gland increases ten-fold in volume and 15-fold in length. Pupal development is divisible into a phase of mitosis and one of cell growth. During the mitotic phase, cytoplasmic membranes are sp...

journal_title：Journal of morphology

authors： Happ GM,Happ CM

更新日期：1982-04-01 00:00:00

abstract：:This article presents a detailed description and illustration of the skull of Liotyphlops albirostris in comparison to the skulls of Typhlophis squamosus, Leptotyphlops dulcis, and Typhlops jamaicensis, based on high-resolution X-ray computed tomography (HRXCT). The skull of T. squamosus is illustrated and discussed i...

journal_title：Journal of morphology

authors： Rieppel O,Kley NJ,Maisano JA

更新日期：2009-05-01 00:00:00

abstract：:This investigation describes the morphogenesis of the type I pneumocyte from the neonatal stage to the age of 3 months. Cells lining subpleural air spaces were photographed from electron microscopic serial sections and a three-dimensional representation of each cell was obtained by transferring the contours of the cel...

journal_title：Journal of morphology

authors： Mercurio AR,Rhodin JA

更新日期：1984-11-01 00:00:00

abstract：:Septate junctions develop initially just basad from apical junctional complexes at the apical ends of regenerating gastrodermal cells. The first morphological indication of differentiation of the junction is the appearance of gentle undulations of the plasma membranes of apposing cells. Subsequently dense dots develop...

journal_title：Journal of morphology

authors： Hori I

更新日期：1987-06-01 00:00:00

abstract：:Spermiogenesis in the South American leptodactylid frog Odontophrynus cultripes was analyzed ultrastructurally. The spermatids undergo morphological modification while still enclosed in microtubule-rich processes of Sertoli cells. Electron-dense plates resembling junctional structures appear in regions at which the sp...

journal_title：Journal of morphology

authors： Báo SN,Dalton GC,de Oliveira SF

更新日期：1991-03-01 00:00:00

abstract：:The forelimbs, along with the crania, are an essential part of the prey-killing apparatus in cats. Linear morphometrics of the forelimbs were used to determine the morphological differences between felids that specialize on large prey, small prey, or mixed prey. We also compared the scaling of felid forelimbs to those...

journal_title：Journal of morphology

authors： Meachen-Samuels J,Van Valkenburgh B

更新日期：2009-06-01 00:00:00

abstract：:During ontogeny, the apical and basal components of dicamptodontid teeth exhibit three major developmental stages: nonpedicellate, subpedicellate, and pedicellate. Premetamorphic larvae tend to have nonpedicellate teeth, incompletely or recently metamorphosed individuals tend to have subpedicellate teeth, and fully tr...

journal_title：Journal of morphology

authors： Beneski JT Jr,Larsen JH Jr

更新日期：1989-02-01 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

authors： Ulshafer RJ,Clavert A

更新日期：1979-10-01 00:00:00

abstract：:Embryos of goodeid fishes develop to term within the ovarian lumen, where they undergo considerable increase in weight due to transfer of maternal nutrients across a trophotaenial placenta. The placenta consists of an embryonic component, the trophotaeniae, and a maternal component, the ovarian lining. The latter was ...

journal_title：Journal of morphology

authors： Lombardi J,Wourms JP

更新日期：1985-06-01 00:00:00

abstract：:Allografts of skin were observed in Chelydra serpentina. The response to these grafts was modified by a previous transplantation of a limb bud at an early embryonic stage. When the same donor was used for all transplants, the first skin graft was accepted by the host. A second skin graft, however, was rejected at abou...

journal_title：Journal of morphology

authors： Yntema CL

更新日期：1974-12-01 00:00:00

abstract：:In Canis and Ursus the largest proportion of attachments of muscles of the shoulder and brachium on the scapula and humerus is direct; fewer attachments are aponeurotic or tendinous. In both genera most attachments can be associated with superficial osteological features (scars or delimitable surfaces); attachments th...

journal_title：Journal of morphology

authors： Bryant HN,Seymour KL

更新日期：1990-10-01 00:00:00

abstract：:The Eurasian lynx (Lynx lynx) is a medium-sized felid, with a tendency to hunt for prey larger than itself. We studied the lynx hindlimb musculoskeletal anatomy in order to determine possible anatomical adaptations to hunting large prey. In our previous work, we had found characters of both large and small felids in t...

journal_title：Journal of morphology

authors： Viranta S,Holmala K,Laakkonen J

更新日期：2021-01-25 00:00:00

abstract：:We studied the functional morphology of the female reproductive system of the purple stone crab Danielethus crenulatus. The most remarkable feature is the relative storage capacity and extensibility of the seminal receptacles. These receptacles are a pair of simple sacs that lack internal structures dividing the inter...

journal_title：Journal of morphology

authors： Farias NE,Spivak ED,Luppi TA

更新日期：2017-07-01 00:00:00

abstract：:Large pinnae are characteristic of the Leporids, and the pinna is known to have a thermoregulatory role. Another role has been hypothesized for the pinna of Lepus spp., as a part of a suspensory system for the greater portion of the head, absorbing shock that might otherwise interfere with vision during high-speed loc...

journal_title：Journal of morphology

authors： Stott P,Jennings N,Harris S

更新日期：2010-06-01 00:00:00

abstract：:Salamanders possess kidneys with two distinct regions: a caudal pelvic portion and cranial genital portion. Nephrons of the pelvic region are responsible for urine formation and transport. Nephrons of the genital region transport sperm from testes to Wolffian ducts; however, nephrons of the genital region possess all ...

journal_title：Journal of morphology

authors： Hartley J,Gribbins KM,Siegel DS

更新日期：2019-10-01 00:00:00

abstract：:The usual pigmentation pattern in mammalian skin consists of fixed melanocytes in the basal layer of the epidermis, supplying keratinocytes with melanosomes. We observed that the glabrous skin (rhinaria and footpads) of dogs deviates from this pattern. In dogs, melanocytes are found in both the dermis and epidermis. T...

journal_title：Journal of morphology

authors： Elofsson R,Kröger RHH

更新日期：2018-08-01 00:00:00

abstract：:A morphological and cytometric analysis of the adult fat body cells and oenocytes was made on sections of abdomens from immature, mature and senescent Drosophila melanogaster of both sexes. There are about 18,000 fat body cells in abdomens of female and mature male flies. Immature and senescent males have about 12,000...

journal_title：Journal of morphology

authors： Johnson MB,Butterworth FM

更新日期：1985-04-01 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

authors： Ulinski PS

更新日期：1979-08-01 00:00:00

abstract：:The fiber constituents and connections of the calyces - the input-receiving regions - of the corpora pedunculata ("mushroom bodies") were studied in reduced silver preparations from the American cockroach, Periplaneta americana (L.). In the outer synaptic layer of the calyces five fiber classes were distinguished, the...

journal_title：Journal of morphology

authors： Weiss MJ

更新日期：1974-01-01 00:00:00

abstract：:The abdominal cerci of the wood cricket, Nemobius sylvestris, are covered by a variety of hair-like sensilla that differ in length, thickness, and articulation. Fillings from the cercal nerves with cobalt chloride and fluorescent dyes revealed the projection of sensory axons into the terminal abdominal ganglion of the...

journal_title：Journal of morphology

authors： Insausti TC,Lazzari CR,Casas J

更新日期：2008-12-01 00:00:00

abstract：:Patterns of ectocranial suture fusion among Primates are subject to species-specific variation. In this study, we used Guttman Scaling to compare modal progression of ectocranial suture fusion among Hominidae (Homo, Pan, Gorilla, and Pongo), Hylobates, and Cercopithecidae (Macaca and Papio) groups. Our hypothesis is t...

journal_title：Journal of morphology

authors： Cray J Jr,Cooper GM,Mooney MP,Siegel MI

更新日期：2014-03-01 00:00:00

abstract：:This study reports a comprehensive description of penaeid spermatogenesis (Penaeus monodon) by light and transmission electron microscopy. A conspicuous characteristic of spermatocytogenesis was a ring-like structure with high electron-density adjacent to the nucleus of a primary spermatocyte. During the spermiogenesi...

journal_title：Journal of morphology

authors： Feng T,Paterson B,Johnston SD

更新日期：2017-05-01 00:00:00