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 snakes by participating in major commissural and association projections. Systematic analyses of Golgi preparations indicate that five populations of neurons are present in dorsomedial area and have a preferential laminar distribution. Layer 1 stellate cells have somata positioned in the center of the outermost cortical layer, layer 1. Their dendrites are confined to this layer. Double pyramidal cells have their somata loosely packed in layer 2. Their dendrites bear a moderate population of spines, ascending through layer 1 to the pial surface and descending partially through layer 3. Some double pyramidal cells have somata displaced downwards into the upper third of layer 3. These neurons closely resemble the layer 2 double pyramidal cells. Layer 3 stellate cells have somata positioned in the middle third of layer 3. Their dendrites extend in all directions throughout layer 3 and through layer 2 into layer 1. Finally, horizontal cells have their somata positioned deep in layer 3, near the ventricle, and dendrites aligned concentric with the ventricle. Comparison of the organization of the known afferents to dorsomedial area with the distribution of the five cell types suggests that the laminations of both afferent fibres and dorsomedial neurons places specific neuronal populations in synaptic contact with specific sets of afferents.
journal_name
J Morpholjournal_title
Journal of morphologyauthors
Ulinski PSdoi
10.1002/jmor.1051610207subject
Has Abstractpub_date
1979-08-01 00:00:00pages
185-210issue
2eissn
0362-2525issn
1097-4687journal_volume
161pub_type
杂志文章abstract：:The structures and distribution of encapsulated muscle receptors were examined in serial transverse sections of flexor carpi radialis in the adult cat. Four types of receptors (muscle spindles, Golgi tendon organs, paciniform, and Pacinian corpuscles) were identified. Their structures resembled those encountered in ot...
journal_title：Journal of morphology
pub_type： 杂志文章
doi：10.1002/jmor.1051830102
更新日期：1985-01-01 00:00:00
abstract：:Spermatozoa from representatives of the five insect orders in superorder Neuropteroidea were examined by electron microscopy following a new fixation method that includes tannic acid in the primary fixative but has uranyl acetate rather than osmium tetroxide as the secondary fixative. The sperm axoneme was found to be...
journal_title：Journal of morphology
pub_type： 杂志文章
doi：10.1002/jmor.1052190104
更新日期：1994-01-01 00:00:00
abstract：:The different elements of the caudal skeleton of the South American catfish genera Nematogenys (Nematogenyinae) and Trichomycterus, Hatcheria, and Bullockia (Pygidiinae) (Siluriformes, Trichomycteridae) show Ontogenetic transformation of the second ural centrum in Trichomycteridae separates the subfamilies Nematogenyi...
journal_title：Journal of morphology
pub_type： 杂志文章
doi：10.1002/jmor.1051770208
更新日期：1983-08-01 00:00:00
abstract：:Recent molecular phylogenies conflict with traditional scleractinian classification at ranks ranging from suborder to genus, challenging morphologists to discover new characters that better agree with molecular data. Such characters are essential for including fossils in analyses and tracing evolutionary patterns thro...
journal_title：Journal of morphology
pub_type： 杂志文章
doi：10.1002/jmor.10899
更新日期：2011-01-01 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：:The nurse shark, Ginglymostoma cirratum, is an obligate suction feeder that preys on benthic invertebrates and fish. Its cranial morphology exhibits a suite of structural and functional modifications that facilitate this mode of prey capture. During suction-feeding, subambient pressure is generated by the ventral expa...
journal_title：Journal of morphology
pub_type： 杂志文章
doi：10.1002/jmor.10626
更新日期：2008-09-01 00:00:00
abstract：:The micropterygid moth Neomicropteryx nipponensis belongs to the most primitive suborder Zeugloptera of the Lepidoptera. During embryogenesis the small circular germ disk formed on the ventral egg surface invaginates deeply into the yolk. It finally separates from the egg periphery or rudimentary serosa, and becomes a...
journal_title：Journal of morphology
pub_type： 杂志文章
doi：10.1002/jmor.1051690105
更新日期：1981-07-01 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
pub_type： 杂志文章
doi：10.1002/jmor.1051990204
更新日期：1989-02-01 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
pub_type： 杂志文章
doi：10.1002/jmor.10135
更新日期：2003-12-01 00:00:00
abstract：:It has been hypothesized that fluctuating asymmetry (FA) may provide an indication of the functional importance of structures within an organism, with structures that more strongly impact fitness being more symmetric. Based on this idea, we predicted that for tetrapods in which the forelimbs and hindlimbs play an uneq...
journal_title：Journal of morphology
pub_type： 杂志文章
doi：10.1002/jmor.20967
更新日期：2019-04-01 00:00:00
abstract：:Profiles with all orientations have been used to visualize the 3D structure of ivory from tusks of elephant, mammoth, walrus, hippopotamus, pig (bush, boar, and warthog), sperm whale, killer whale, and narwhal. Polished, forming, fractured, aged, and stained surfaces were prepared for microscopy using epi-illumination...
journal_title：Journal of morphology
pub_type： 杂志文章
doi：10.1002/jmor.10585
更新日期：2008-04-01 00:00:00
abstract：:The SEM was used to study the development of respiratory structures in successive stages in relation to the overall changes occurring in the scorpions. Book lung development is a slow process, starting with spiracles and a sac-like atrium in the early embryo and continuing lamellar formation to 150 or more in the adul...
journal_title：Journal of morphology
pub_type： 杂志文章
doi：10.1002/jmor.10653
更新日期：2008-09-01 00:00:00
abstract：:Amphisbaenians are fossorial, predominantly limbless squamate reptiles with distinct cranial shapes corresponding to specific burrowing behaviors. Due to their cryptic lifestyles and the scarcity of museum specimens, little is known of their intraspecific variation, particularly regarding cranial osteology. This repre...
journal_title：Journal of morphology
pub_type： 杂志文章
doi：10.1002/jmor.20564
更新日期：2016-09-01 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：: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：:The cloacal complex of Crocodylus porosus is composed of three chambers (proctodaeum, urodaeum, and coprodaeum) separated by tight, muscular sphincters. The proctodaeum is proximal to the cloacal vent and houses the genitalia. The urodaeum is the largest chamber, is capable of storing large quantities of urine, and is...
journal_title：Journal of morphology
pub_type： 杂志文章
doi：10.1002/1097-4687(200008)245:2<168::AID-JMOR7>3.0.
更新日期：2000-08-01 00:00:00
abstract：:Oviductal structure is described in New Zealand's common gecko, Hoplodactylus maculatus, over four reproductive stages (early/mid-vitellogenesis, late vitellogenesis, early pregnancy, late pregnancy), using light, scanning electron, and transmission electron microscopy. Five regions of the oviduct are recognized: infu...
journal_title：Journal of morphology
pub_type： 杂志文章
doi：10.1002/(SICI)1097-4687(199710)234:1<51::AID-JMOR5
更新日期：1997-10-01 00:00:00
abstract：:The allometric relations of diameter and length of humerus, ulna, femur, and tibia of 108 specimens, from 63 different breeds of dogs and 12 specimens of wolves, were calculated by means of model II of regression or major axis method. Only for the tibia were the values of wolves included in the cluster formed for dog ...
journal_title：Journal of morphology
pub_type： 杂志文章
doi：10.1002/jmor.1051900107
更新日期：1986-10-01 00:00:00
abstract：:The lungs of the New Caldeonian gecko Rhacodactylus leachianus were examined by means of gross dissection and light and electron microscopy. This tropical species, which is the largest living gecko, possesses two simple, single-chambered lungs. Right and left lungs are of similar size and shape. The lung volume (27.2 ...
journal_title：Journal of morphology
pub_type： 杂志文章
doi：10.1002/jmor.1051990104
更新日期：1989-01-01 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
pub_type： 杂志文章
doi：10.1002/jmor.20724
更新日期：2017-11-01 00:00:00
abstract：:Barnacle cypris larvae show high morphological variation in the organs used in search of and attaching to a substratum. This variation may represent adaptation to the habitat of the species. Here, we studied SEM level morphologies of cypris antennular sensory and attachment organs in a deep-sea vent endemic species (N...
journal_title：Journal of morphology
pub_type： 杂志文章
doi：10.1002/jmor.20522
更新日期：2016-05-01 00:00:00
abstract：:Whole body studies of Plotosus tandanus revealed that ampullary pores occur over the entire body of the fish, but are in higher concentrations in the head region. These pores give rise to a short canal (50-60 microm) produced by columnar epithelial cells bound together by tight junctions and desmosomes. At the junctio...
journal_title：Journal of morphology
pub_type： 杂志文章
doi：10.1002/jmor.10063
更新日期：2003-02-01 00:00:00
abstract：:The wall of the asymmetrical saclike lungs of the fishes Polypterus and Erpetoichthys consists of several functionally different tissue layers. Their lumen is lined by a surface epithelium composed of (1) highly attenuated cells, termed pneumocytes I; (2) pneumocytes II with lamellar bodies, presumably indicating surf...
journal_title：Journal of morphology
pub_type： 杂志文章
doi：10.1002/jmor.1052010206
更新日期：1989-08-01 00:00:00
abstract：:Sabellid and sabellariid polychaetes are regarded as sister groups in a number of recent phylogenetic analyses. This is based mainly on a shared specific arrangement of chaetae referred to as chaetal inversion. Remarkably, the uncini have a notopodial position in the abdomen, whereas capillary chaetae occur in the neu...
journal_title：Journal of morphology
pub_type： 杂志文章
doi：10.1002/jmor.10537
更新日期：2008-01-01 00:00:00
abstract：:The brine shrimp, Artemia (Crustacea, Anostraca), is a zooplankton that is commonly used in both basic and applied research. Unfortunately, Artemia embryos are often cultured under conditions that alter early development, and reports based on these cultures oversimplify or fail to describe morphological phenotypes. Th...
journal_title：Journal of morphology
pub_type： 杂志文章
doi：10.1002/jmor.20344
更新日期：2015-03-01 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：:Electron microscopy of spermatogenesis in the Hawaiian red lobster, Enoplometopus occidentalis (Randall), has revealed unusual activity within membranous organelles. Mitochondria-like bodies (MLB-1) seen first in spermatogonia appear in primary spermatocytes to swell and fuse as the cytoplasm develops annulate lamella...
journal_title：Journal of morphology
pub_type： 杂志文章
doi：10.1002/jmor.1051900108
更新日期：1986-10-01 00:00:00
abstract：:The sharpness and thus information content of the retinal image in the eye depends on the optical quality of the lens and its accurate positioning in the eye. Multifocal lenses create well-focused color images and are present in the eyes of all vertebrate groups studied to date (mammals, reptiles including birds, amph...
journal_title：Journal of morphology
pub_type： 杂志文章
doi：10.1002/jmor.10849
更新日期：2010-08-01 00:00:00
abstract：:The gonads from three hermaphrodite species of different invertebrate phyla were studied at the ultastructure level. In the flatworm Dugesia biblica, male germ cells in different stages of development lay in the lumen of testicular follicles surrounded by overlapping parietal cells. The intercellular space formed by c...
journal_title：Journal of morphology
pub_type： 杂志文章
doi：10.1002/jmor.1051920304
更新日期：1987-06-01 00:00:00
abstract：:Larval and juvenile air breathing fish may experience nocturnal and/or seasonal aquatic hypoxia. Yet, whether hypoxia induces respiratory developmental plasticity in larval air breathing fish is uncertain. This study predicted that larvae of two closely related anabantid fish-the facultative air breather the Siamese f...
journal_title：Journal of morphology
pub_type： 杂志文章
doi：10.1002/jmor.20931
更新日期：2019-02-01 00:00:00
