Abstract:
:The ultrastructure of five epithelial cellular types is described. (1) Absorptive-storing cells possess a striated border and accumulate lipids and glycogen. They also contain an apical multivesicular complex and numerous membrane-bound PAS-positive granules of unknown significance. (2) Zymogenic cells contain numerous, large secretory granules. These cells also possess microvilli and accumulate lipid droplets. (3) Current-producing cells contain bundles of thick and thin myofilaments and extend from the basal lamina to the lumen. (4) Mucous cells display the characteristic features of such secretory cells. (5) In addition to these four cellular types, already observed under the light microscope by other authors, endocrine cells have also been identified by both light and electron microscope. They contain variable amounts of secretory granules of diverse sizes and electron densities. Immunocytochemical studies reveal the presence of cells immunoreactive to somatostatin, glucagon, and pancreatic polypeptide. Intraepithelial nerve fibers in contact with endocrine cells are also present. As far as we know, this appears to be the first description of enteroendocrine cells in the phylum Echinodermata.
journal_name
J Morpholjournal_title
Journal of morphologyauthors
Martinez A,Villaro AC,Sesma Pdoi
10.1002/jmor.1052020203subject
Has Abstractpub_date
1989-11-01 00:00:00pages
151-164issue
2eissn
0362-2525issn
1097-4687journal_volume
202pub_type
杂志文章abstract::The oval olfactory rosette of the carp Labeo rohita belongs to Burne's ('09) rosette column one or to Bateson's (1889) rosette type three. The total olfactory area of the fish is greater than its total retinal area; however, it has been classified with Teichmann's ('54) group of eye-nose fishes. Each olfactory chamber...
journal_title:Journal of morphology
pub_type: 杂志文章
doi:10.1002/jmor.1051400107
更新日期:1973-05-01 00:00:00
abstract::In Japan Pseudopythina tsurumaru is an up to 10.8 mm-long commensal of the burrowing sea cucumber Protankyra bidentata, whereas in Hong Kong the same species is smaller and associated with the crab Hexapus anfractus, itself a commensal of P. bidentata. Japanese P. tsurumaru is a hermaphrodite tending towards protogyny...
journal_title:Journal of morphology
pub_type: 杂志文章
doi:10.1002/jmor.10158
更新日期:2004-10-01 00:00:00
abstract::Many studies in the genus Poecilia have focused on reproductive and genetic characteristics of Poecilia formosa, the Amazon molly, and its sympatric species P. latipinna and P. mexicana. The research literature of Poecilia dentition has been limited to general tooth morphology. Essentially absent are comparative analy...
journal_title:Journal of morphology
pub_type: 杂志文章
doi:10.1002/(SICI)1097-4687(199903)239:3<271::AID-JMOR
更新日期:1999-03-01 00:00:00
abstract::The phylogenetic position of the Ectoprocta within the Lophotrochozoa is discussed controversially. For gaining more insight into ectoproct relationships and comparing it with other potentially related phyla, we analysed the myoanatomy and serotonergic nervous system of adult representatives of the Phylactolaemata (Pl...
journal_title:Journal of morphology
pub_type: 杂志文章
doi:10.1002/jmor.11006
更新日期:2012-01-01 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::Two of the forearm flexors of the horse, the superficial and deep digital flexor muscles, are critical to support the digital and fetlock joints, exhibit differing insertions, and are passively supported by the proximal and distal check ligaments, respectively. These two muscles differ in histochemical composition and...
journal_title:Journal of morphology
pub_type: 杂志文章
doi:10.1002/jmor.1052120306
更新日期:1992-06-01 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 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
pub_type: 杂志文章
doi:10.1002/jmor.1052160306
更新日期:1993-06-01 00:00:00
abstract::The gross relationships and light microscopic anatomy of the suprarenal gland of a prosimian primate, Galago senegalensis, is described. The left gland is located medial to the pole of the left kidney in a fascial compartment of its own. The right suprarenal is located medial to the pole of the right kidney in intimat...
journal_title:Journal of morphology
pub_type: 杂志文章
doi:10.1002/jmor.1051450209
更新日期:1975-02-01 00:00:00
abstract::Reproduction was studied in a South Carolina population of the paedomorphic salamander Siren intermedia with emphasis on anatomy of the female oviduct. The oviduct forms 67-79% of the snout-vent length in this elongate species and can be divided into three portions. The atrium, 7-13% of oviducal length, is the narrow ...
journal_title:Journal of morphology
pub_type: 杂志文章
doi:10.1002/(SICI)1097-4687(199603)227:3<335::AID-JMOR
更新日期:1996-03-01 00:00:00
abstract::The larvae of Halicryptus spinulosus bear six rings of sensory/ locomotory appendages. Twelve pedicellate flosculi, 6 dorsal and 6 ventral, are associated with the neck-lorica junction. Newly described are two rows of 4-5 flosculi present on the dorsal and ventral plates, and 2 tubuli located on each dorsolateral and ...
journal_title:Journal of morphology
pub_type: 杂志文章
doi:10.1002/jmor.1052100207
更新日期:1991-11-01 00:00:00
abstract::In uloborid spiders, eye loss is accompanied by increased visual angles, optical material investment, and potential visual acuity of the retained eyes. Relative to carapace volume, the six-eyed Hyptiotes cavatus and two four-eyed Miagrammopes species have greater retinal hemisphere areas and lens volumes than do the e...
journal_title:Journal of morphology
pub_type: 杂志文章
doi:10.1002/jmor.1051960202
更新日期:1988-05-01 00:00:00
abstract::Scleractinian corals begin their biomineralization process shortly after larval settlement with the formation of calcium carbonate (CaCO(3)) structures at the interface between the larval tissues and the substrate. The newly settled larvae exert variable degrees of control over this skeleton formation, providing an op...
journal_title:Journal of morphology
pub_type: 杂志文章
doi:10.1002/jmor.20401
更新日期:2015-10-01 00:00:00
abstract::A large sample of embryological material of the North American paddlefish Polyodon spathula (Acipenseriformes: Polyodontidae) confirms that early development in Polyodon is very similar to that reported for the sister group of Polyodontidae, the sturgeons (Acipenseridae). Polyodon illustrates many basic aspects of aci...
journal_title:Journal of morphology
pub_type: 杂志文章
doi:10.1002/jmor.1052130106
更新日期:1992-07-01 00:00:00
abstract::Developmental studies of the Recent Australian lungfish, Neoceratodus forsteri, show that this species has two sets of functional tooth-bearing bones in the lower jaw of young hatchlings. These coincide with an early stage in the life history when the fish is strictly carnivorous. In N. forsteri, a paired tooth-bearin...
journal_title:Journal of morphology
pub_type: 杂志文章
doi:10.1002/jmor.1052250306
更新日期:1995-09-01 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::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
abstract::According to the current opinion, lymph-heart striated muscle represents a specialized type of skeletal muscles in frogs. Here, we studied muscle fibers in mechanically damaged lymph hearts during the first postoperative week using electron-microscopic autoradiography. We present evidence that both, the satellite cell...
journal_title:Journal of morphology
pub_type: 杂志文章
doi:10.1002/jmor.20476
更新日期:2015-12-01 00:00:00
abstract::Over the past few decades, geometric morphometric methods have become increasingly popular and powerful tools to describe morphological data while over the same period artificial neural networks have had a similar rise in the classification of specimens to preconceived groups. However, there has been little research i...
journal_title:Journal of morphology
pub_type: 杂志文章
doi:10.1002/jmor.20626
更新日期:2017-01-01 00:00:00
abstract::The reproductive process in insects may be affected by several factors, among which environmental temperature is one of the most important because of the poikilothermic condition of insects. To determine the effect of suboptimal temperature on the spermiogenic process of Triatoma infestans, males were exposed to 12°C ...
journal_title:Journal of morphology
pub_type: 杂志文章
doi:10.1002/jmor.1052160104
更新日期:1993-04-01 00:00:00
abstract::Data describing segmental masses and moments of inertia (MOI) of limb segments are required for inverse dynamic calculations. In horses, these values are usually calculated using regression equations that have been developed from a limited number of horses representing a small number of breeds. The objective of the pr...
journal_title:Journal of morphology
pub_type: 杂志文章
doi:10.1002/jmor.20829
更新日期:2018-07-01 00:00:00
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
pub_type: 杂志文章
doi:10.1002/jmor.1052140311
更新日期:1992-12-01 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
pub_type: 杂志文章
doi:10.1002/jmor.1052140206
更新日期:1992-11-01 00:00:00
abstract::The Hula Painted Frog (Latonia nigriventer) is a rare frog species endemic to the Hula Valley, Israel. The species is the sole relict of a clade that was widespread mainly in Europe from the Oligocene until the beginning of the Pleistocene. The osteological characteristics of L. nigriventer are described based on X-ra...
journal_title:Journal of morphology
pub_type: 杂志文章
doi:10.1002/jmor.20562
更新日期:2016-09-01 00:00:00
abstract::Among egg-brooding hylid frogs there is much interspecific variation in the degree of development of the young at hatching. In certain species of Gastrotheca the eggs hatch into free-living tadpoles, whereas in others (and in the genera Amphignathodon, Cryptobatrachus, Stefania and Hemiphractus) the eggs hatch directl...
journal_title:Journal of morphology
pub_type: 杂志文章
doi:10.1002/jmor.1051820102
更新日期:1984-10-01 00:00:00
abstract::The locomotory system of Solifugae is distinct from that of other Arachnida in several ways. Only three pairs of legs are involved in locomotion, while the first pair function as sensory appendages. Morphologically, the proximal region of the locomotory system in Solifugae is characterized by fused coxae. Within the p...
journal_title:Journal of morphology
pub_type: 杂志文章
doi:10.1002/jmor.21260
更新日期:2020-12-01 00:00:00
abstract::The morphology of ctenostome bryozoans remains little investigated with only few species having been subject to more detailed studies. From all the seven main different superfamilies, only few representatives have been studied. The superfamily Arachnidioidea has particularly been neglected concerning detailed morpholo...
journal_title:Journal of morphology
pub_type: 杂志文章
doi:10.1002/jmor.21275
更新日期:2020-12-01 00:00:00
abstract::The three-dimensional structure of the organ of Bellonci in the marine amphipod Gammarus setosus and the relationship between its sensory cells and concretion are described using light, transmission, and scanning electron microscopy, with chemical treatment for cell lysis, calcium chelation, glycogen staining, and lan...
journal_title:Journal of morphology
pub_type: 杂志文章
doi:10.1002/jmor.1051810109
更新日期:1984-07-01 00:00:00
abstract::Microscopic studies show that the capsule of the hip joint in the vervet monkey (Cercopithecus aethiops pygerythrus) is preponderantly collagenous. Among the collagen fiber bundles are varying quantities of elastic fibers that demonstrate a definite, differential regional distribution. The highest concentration of ela...
journal_title:Journal of morphology
pub_type: 杂志文章
doi:10.1002/jmor.1051970307
更新日期:1988-09-01 00:00:00
abstract::Swimming crabs of the taxon Portunoidea show specialized, paddle-shaped fifth pereiopods (P5), which play a role in these crabs' ability to swim. In this study, the morphology of the fifth pereiopod in swimming and non-swimming crabs was studied in detail and the mobility in the articulations between podomeres was cal...
journal_title:Journal of morphology
pub_type: 杂志文章
doi:10.1002/jmor.21268
更新日期:2020-12-01 00:00:00