Brain-capillary architecture of the newt, Triturus cristatus carnifex (Caudata: Salamandridae): Scanning electron-microscopical study of vascular corrosion casts.

abstract：:A statistical and functional relationship between neural canal anatomy and locomotor mode is demonstrated in living marine mammals of the Order Carnivora. This relationship is interpreted to be the result of differential innervation and territory of musculature involved in generating the six locomotor patterns analyze...

journal_title：Journal of morphology

authors： Giffin EB

更新日期：1992-12-01 00:00:00

abstract：:The structure of the thumus in adult specimens of a marine teleost, the cling fish Sicyases sanguineus, has been studied by light and transmission electron microscopy. Most cling fishes have an outer thymus located beneath the opercular epithelium. A few of them, however, have a large inner thymus besides a poorly dev...

journal_title：Journal of morphology

authors： Gorgollon P

更新日期：1983-07-01 00:00:00

abstract：:This study details the gross and microscopic anatomy of the pelvic kidney in male Ambystoma maculatum. The nephron of male Ambystoma maculatum is divided into six distinct regions leading sequentially away from a renal corpuscle: (1) neck segment, which communicates with the coelomic cavity via a ventrally positioned ...

journal_title：Journal of morphology

authors： Siegel DS,Sever DM,Aldridge RD

更新日期：2010-12-01 00:00:00

abstract：:The purpose of this study was to clarify the general architecture and morphological variations of the autonomic cardiac nervous system (ACNS) in the African Cercopithecidae (Old World monkeys), and to discuss the evolutionary changes between this system in African/Asian Cercopithecidae and humans. A detailed macroscop...

journal_title：Journal of morphology

authors： Kawashima T,Akita K,Sato K,Sasaki H

更新日期：2007-09-01 00:00:00

abstract：:Two types of sperm are produced in the silkworm, Bombyx mori. Nucleate eupyrene sperm is an ordinary sperm that contributes to fertilization, while anucleate apyrene sperm is considered to play important roles in assisting eupyrene sperm. At the very late stage of spermatogenesis, a phenomenon called "peristaltic sque...

journal_title：Journal of morphology

authors： Sahara K,Kawamura N

更新日期：2004-01-01 00:00:00

abstract：:The study of semithin (1 μ in thickness) and thin sections of Epon-embedded material reveals that Malpighian tubules of Formica polyctena are composed of a single cellular type throughout their length. No differentiated regions were observed. Ultrastructural traits of the epithelial cells are those of highly metabolic...

journal_title：Journal of morphology

authors： Garayoa M,Villaro AC,Montuenga L,Sesma P

更新日期：1992-11-01 00:00:00

abstract：:After placing in vitro, central subgerminal ooplasm (containing a central nucleus of Pander) from a quail germ disc of a prelaid egg (before symmetrization) on the upper layer of an isolated chicken antisickle, we observed the induction of a radially oriented preneural plate (without interference of chordamesoblast). ...

journal_title：Journal of morphology

authors： Callebaut M,Van Nueten E,Harrisson F,Bortier H

更新日期：2004-05-01 00:00:00

abstract：:Mate, prey, and predator recognition often depend on the integration of information from multiple sensory modalities including visual, auditory, and/or olfactory inputs. In Crotalinae, the eyes sense visible light while the pit organs detect infrared (IR) radiation. Previous studies indicate that there is significant ...

journal_title：Journal of morphology

authors： Liu Y,Chen Q,Papenfuss TJ,Lu F,Tang Y

更新日期：2016-01-01 00:00:00

abstract：:The correlation between skin structure and hydrodynamic design of the dorsal fin of the harbor porpoise (Phocoena phocoena) was examined. For the study of fin morphology and geometry, a scheme of sampling representing a two-parameter mesh on the fin surface was used. At each data point the thickness of the epidermis, ...

journal_title：Journal of morphology

authors： Pavlov VV

更新日期：2003-12-01 00:00:00

abstract：:The function of the septomaxilla of nonmammalian synapsids has long been problematic. Distinctive features of this bone, including a prominent intranarial process and a septomaxillary canal and foramen, are characteristic of pelycosaurs and nonmammalian therapsids, but are lost in their mammalian descendants. Numerous...

journal_title：Journal of morphology

authors： Hillenius WJ

更新日期：2000-07-01 00:00:00

abstract：:We describe the cranial ontogeny of an australidelphian marsupial, Dasyurus albopunctatus, using a combination of qualitative and quantitative approaches. We examined in detail qualitative morphological changes of just-weaned individuals as compared to old adults; specifically, changes in 31 morphological structures (...

journal_title：Journal of morphology

authors： Flores DA,Giannini N,Abdala F

更新日期：2006-04-01 00:00:00

abstract：:Standard transmission electron microscopy (TEM) techniques have been applied to three species of phoronids to describe cytological features of their nervous systems. Four types of neurons have been distinguished by morphological and ultrastructural criteria, mainly involving their kinds of vesicles. Glial cells with c...

journal_title：Journal of morphology

authors： Fernández I,Pardos F,Benito J,Roldán C

更新日期：1996-12-01 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

authors： Mukai H,Oda S

更新日期：1980-08-01 00:00:00

abstract：:Changes in size frequency distribution of extrastromal follicles, atretric follicles (AF), and the number of oogonia, oocytes, and primordial follicles in the ovaries are studied in Calotes versicolor during its annual reproductive cycle. Extrastromal follicles were graded into stages I to VI based on their diemeter. ...

journal_title：Journal of morphology

authors： Shanbhag BA,Prasad BSK

更新日期：1993-04-01 00:00:00

abstract：:Topological and histological analyses of Mabuya mabouya embryos at different developmental stages showed an extraembryonic membrane sequence as follows: a bilaminar omphalopleure and progressive mesodermal expansion around the whole yolk sac at gastrula stages; mesodermal split and formation of an exocoelom in the ent...

journal_title：Journal of morphology

authors： Jerez A,Ramírez-Pinilla MP

更新日期：2003-11-01 00:00:00

abstract：:The plainfin midshipman fish Porichthys notatus has both inter- and intra-sexual dimorphism in the sound-producing (vocal or sonic) muscles attached to the swimbladder wall. The "Type I" and "Type II" male morphs differ in that dramatic structural changes related to sexual maturity occur in the mass, the area of mitoc...

journal_title：Journal of morphology

authors： Brantley RK,Marchaterre MA,Bass AH

更新日期：1993-06-01 00:00:00

abstract：:The plainfin midshipman fish, Porichthys notatus, is a nocturnal marine teleost that uses social acoustic signals for communication during the breeding season. Nesting type I males produce multiharmonic advertisement calls by contracting their swim bladder sonic muscles to attract females for courtship and spawning wh...

journal_title：Journal of morphology

authors： Mohr RA,Whitchurch EA,Anderson RD,Forlano PM,Fay RR,Ketten DR,Cox TC,Sisneros JA

更新日期：2017-11-01 00:00:00

abstract：:Three regions of the byssus of the marine mussel Mytilus edulis L. are distinct in structural organization at the macroscopic and microscopic level and in amino acid composition. The threads that emanate from the stem at the base of the foot are divided into two regions. The proximal, elastic region has a crimped, den...

journal_title：Journal of morphology

authors： Benedict CV,Waite JH

更新日期：1986-09-01 00:00:00

abstract：:Several orders of morphologically four-winged insects have evolved mechanisms that enforce a union between the mesothoracic and metathoracic wings (forewings and hindwings) during the wing beat cycle. Such mechanisms result in a morphologically tetrapterous insect flying as if it were functionally dipterous, and these...

journal_title：Journal of morphology

authors： Stocks IC

更新日期：2010-02-01 00:00:00

abstract：:The lizard tail is well known for its ability to autotomize and regenerate. Physical contact of the tail by a predator may induce autotomy at the location at which the tail is grasped, and upon detachment the tail may undergo violent, rapid, and unpredictable movements that appear to be, to some degree, regulated by c...

journal_title：Journal of morphology

authors： Russell AP,Lai EK,Lawrence Powell G,Higham TE

更新日期：2014-09-01 00:00:00

abstract：:The liver of the cobia, Rachycentron canadum, was examined by gross dissection, histological, and ultrastructural procedures. Other visceral organs were examined by histological techniques only. Unique perivenous smooth muscle cords are associated with veins in these systems, but they are particularly prominent in the...

journal_title：Journal of morphology

authors： Howse HD,Overstreet RM,Hawkins WE,Franks JS

更新日期：1992-05-01 00:00:00

abstract：:Homology is resemblance caused by a continuity of information. In biology it is a unified developmental phenomenon. Homologies among and within individuals intergrade in several ways, so historical homology cannot be separated sharply from repetitive homology. Nevertheless, the consequences of historical and repetitiv...

journal_title：Journal of morphology

authors： Van Valen LM

更新日期：1982-09-01 00:00:00

abstract：:One of the main characters used in acoel taxonomy is the male copulatory organ. Despite this, ultrastructural studies of this structure are scarce. We studied the ultrastructure of the copulatory organ in eight species of acoels belonging to the taxon Childia. Members of Childia possess a well-developed conical or cyl...

journal_title：Journal of morphology

authors： Tekle YI,Raikova OI,Justine JL,Jondelius U

更新日期：2007-02-01 00:00:00

abstract：:We described the topography and morphometry of the testicular artery, pampiniform plexus veins, and indirect connections between them in the spermatic cord of the bull. Sixty microcorrosive casts of bovine spermatic cords were analyzed macroscopically, by stereomicroscopy, and by scanning electron microscopy. The aver...

journal_title：Journal of morphology

authors： Polguj M,Jȩdrzejewski KS,Topol M

更新日期：2011-04-01 00:00:00

abstract：:To provide basic data about bone resorbing cells in the skeleton during the life cycle of Danio rerio, larvae, juveniles, and adults (divided into six age groups) were studied by histological procedures and by demonstration of the osteoclast marker enzyme tartrate-resistant acid phosphatase (TRAP). Special attention w...

journal_title：Journal of morphology

authors： Witten PE,Hansen A,Hall BK

更新日期：2001-12-01 00:00:00

abstract：:For better understanding of the links between limb morphology and the metabolic cost of locomotion, we have characterized the relationships between limb length and shape and other functionally important variables in the straightened forelimbs and hindlimbs of a sample of 12 domestic dogs (Canis familiaris). Intra-anim...

journal_title：Journal of morphology

authors： Myers MJ,Steudel K

更新日期：1997-11-01 00:00:00

abstract：:Histological and electron-microscopical studies of the head-kidney ontogenesis in a group of bottomspawner and mouthbrooder cichlid fishes reveal that this organ undergoes three functional and structural stages. At the initial stage, 2-12 days after fertilization, the head-kidney is a filtering organ of two glomeruli ...

journal_title：Journal of morphology

authors： Fishelson L

更新日期：1996-07-01 00:00:00

abstract：:The chimaeroid holocephalian fishes are distinguished among extant chondrichthyans by the possession of three pairs of tooth plates, evergrowing and partially hypermineralized, that are not shed and replaced like the teeth of living elasmobranchs. Although derivation of the chimaeroid tooth plate from the fusion of me...

journal_title：Journal of morphology

authors： Didier DA,Stahl BJ,Zangerl R

更新日期：1994-10-01 00:00:00

abstract：:The crocodilian naris is regulated by smooth muscle. The morphology of this system was investigated using a combination of gross, light microscopic, and micro-CT analyses, while the mechanics of narial regulation were examined using a combination of Hall Effect sensors, narial manometry, and electromyography. Alligato...

journal_title：Journal of morphology

authors： Klassen M,Adams J,Cramberg M,Knoche L,Young BA

更新日期：2020-06-01 00:00:00

abstract：:The cytoarchitecture of nuclei in the preoptic area, ventral thalamus, dorsal thalamus, epithalamus, hypothalamus, posterior tuberculum, synencephalon, and pretectum and the accessory optic nuclei was analyzed in a perciform teleost, the sea bass Dicentrarchus labrax, by using serial sections stained with cresyl-viole...

journal_title：Journal of morphology

authors： Cerdá-Reverter JM,Zanuy S,Muñoz-Cueto JA

更新日期：2001-03-01 00:00:00