Abstract：
:The cat hindlimb contains several long, biarticular strap muscles composed of parallel muscle fascicles that attach to short tendons. Three of these muscles--sartorius, tenuissimus, and semitendinosus--were studied by dissecting individual gold-stained fibers and determining the surface distribution of acetylcholinesterase-stained end-plate zones. In each muscle, fascicles were composed of muscle fibers that ran only part of the fascicle length and tapered to end as fine strands that interdigitated with other tapering fibers within the muscle mass. Most muscle fibers measured 2-3 cm in length. Fascicles of muscle fibers were crossed by short transverse bands of endplates (1 mm wide by 1-5 mm long) that were spaced at fairly regular intervals from the origin to the insertion of the muscle. The endplate pattern suggested that the fiber fascicles were organized into multiple longitudinal strips. In the sartorius, the temporospatial distribution of electromyographic (EMG) activity evoked by stimulating fine, longitudinal branches of the parent nerve confirmed that each strip was selectively innervated by a small subset of the motor axons. These axons appeared to distribute their endings throughout the entire length of the fascicles, providing for synchronous activation of their in-series fibers.
journal_name
J Morpholjournal_title
Journal of morphologyauthors
Loeb GE,Pratt CA,Chanaud CM,Richmond FJdoi
10.1002/jmor.1051910102subject
Has Abstractpub_date
1987-01-01 00:00:00pages
1-15issue
1eissn
0362-2525issn
1097-4687journal_volume
191pub_type
杂志文章abstract：:Basket stars, that is, Ophiuroidea in Echinodermata, exhibit distinctive morphological characteristics with their complicatedly branched arms that can regenerate immediately after mutilation. Although, in brittle stars, that is, ophiuroids with nonbranched arms, the arm regeneration process following accidental trauma...
journal_title：Journal of morphology
pub_type： 杂志文章
doi：10.1002/jmor.21296
更新日期：2021-02-01 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：:Adult female white-footed mice, Peromyscus leucopus, were exposed to long (LP) or short (SP) photoperiods for 6 weeks (experiment I). Another group of animals was kept for 6 weeks in SP, then injected SC with 30 micrograms prolactin twice daily for 2, 3, 4, or 6 days (experiment II). Ovaries from the mice in both expe...
journal_title：Journal of morphology
pub_type： 杂志文章
doi：10.1002/jmor.1051760211
更新日期：1983-05-01 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：: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：:There are remarkable interspecific differences in the sizes of the larvae of Andean frogs of the genus Telmatobius. This size variation seems to be associated with the duration of the larval stage and may affect the hind-limb morphology in Telmatobius. Larval, juvenile, and adult Telmatobius rubigo and T. oxycephalus ...
journal_title：Journal of morphology
pub_type： 杂志文章
doi：10.1002/jmor.21264
更新日期：2020-12-01 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
pub_type： 杂志文章
doi：10.1002/(SICI)1097-4687(199711)234:2<183::AID-JMOR
更新日期：1997-11-01 00:00:00
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：:The stomach of decapods is a complex organ with specialized structures that are delimited by a cuticle. The morphology and ontogeny of the stomach are largely described, but few studies have focused on the morphology of its cuticle. This study examined the morphology of the stomach cuticle of cardiac sacs, gastric mil...
journal_title：Journal of morphology
pub_type： 杂志文章
doi：10.1002/jmor.20949
更新日期：2019-03-01 00:00:00
abstract：:The functioning of the vertebrate eye depends on its absolute size, which is presumably adapted to specific needs. Eye size variation in lidless and spectacled colubrid snakes was investigated, including 839 specimens belonging to 49 genera, 66 species and subspecies. Variations of adult eye diameters (EDs) in both ab...
journal_title：Journal of morphology
pub_type： 杂志文章
doi：10.1002/jmor.20028
更新日期：2012-08-01 00:00:00
abstract：:The morphology of the jaw suspension and jaw protrusion mechanism in lamniform sharks is described and mapped onto a cladogram to investigate how changes in jaw suspension and protrusion have evolved. This has revealed that several evolutionary modifications in the musculoskeletal apparatus of the jaws have taken plac...
journal_title：Journal of morphology
pub_type： 杂志文章
doi：10.1002/jmor.10342
更新日期：2005-07-01 00:00:00
abstract：:The median fins in extant actinopterygians are the product of millions of years of evolution. During this time, different developmental patterns for the dorsal and anal fins emerged leading to a high variation in median fin morphology and ontogeny. In this study, the development of anal and dorsal fins in atheriniform...
journal_title：Journal of morphology
pub_type： 杂志文章
doi：10.1002/jmor.20679
更新日期：2017-06-01 00:00:00
abstract：:African lungfish (Protopterus) seem unique among osteognathostomes in possessing a potential vomeronasal organ homolog in form of accessory epithelial crypts within their nasal cavity. Many details regarding structural and functional properties of these crypts are still unexplored. In this study, we reinvestigate the ...
journal_title：Journal of morphology
pub_type： 杂志文章
doi：10.1002/jmor.20673
更新日期：2017-06-01 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
pub_type： 杂志文章
doi：10.1002/jmor.1051890305
更新日期：1986-09-01 00:00:00
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journal_title：Journal of morphology
pub_type： 杂志文章
doi：10.1002/jmor.20664
更新日期：2017-05-01 00:00:00
abstract：:Remarkably preserved specimens of Cowralepis mclachlani Ritchie, 2005 (Proc Linn Soc NSW 126:215-259) (Phyllolepida, Placodermi) represent a unique ontogenetic sequence adding to our understanding of anatomy, function, and phylogeny among basal jawed vertebrates (gnathostomes). A systematic review demonstrates that th...
journal_title：Journal of morphology
pub_type： 杂志文章
doi：10.1002/jmor.10719
更新日期：2009-07-01 00:00:00
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 numerou...
journal_title：Journal of morphology
pub_type： 杂志文章
doi：10.1002/jmor.1052020203
更新日期：1989-11-01 00:00:00
abstract：:Two different patterns of wing venation are currently supposed to be present in each of the three orders of Paraneoptera. This is unlikely compared with the situation in other insects where only one pattern exists per order. We propose for all Paraneoptera a new and unique interpretation of wing venation pattern, assu...
journal_title：Journal of morphology
pub_type： 杂志文章
doi：10.1002/jmor.11036
更新日期：2012-05-01 00:00:00
abstract：:The common snook, Centropomus undecimalis, was induced to ovulate using a time-release, GnRH analogue. Ovulation occurred the afternoon or evening the day after hormone administration. The time of ovulation was established within half an hour. At ovulation, three fish per time-group were divided into 0, 6, 12, 18 hr a...
journal_title：Journal of morphology
pub_type： 杂志文章
doi：10.1002/jmor.20652
更新日期：2017-04-01 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
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journal_title：Journal of morphology
pub_type： 杂志文章
doi：10.1002/(SICI)1097-4687(199602)227:2<127::AID-JMOR
更新日期：1996-02-01 00:00:00
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journal_title：Journal of morphology
pub_type： 杂志文章
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更新日期：1985-06-01 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：:Cubozoans have a complex lifecycle in many ways similar to the scyphozoan lifecycle. The sexual reproduction within cubozoans varies between species with one clade having copulation and internal fertilization and the release of planula larvae. This cubozoan clade, the family Tripedaliidae, includes three species, Copu...
journal_title：Journal of morphology
pub_type： 杂志文章
doi：10.1002/jmor.21046
更新日期：2019-10-01 00:00:00
abstract：:We provide a detailed description of the larval morphology of the Great Basin spadefoot toad (Scaphiopus intermontanus), a species with documented morphological variability in larval structures associated with feeding. We based our findings on laboratory-raised individuals fed a herbivorous diet. We characterized the ...
journal_title：Journal of morphology
pub_type： 杂志文章
doi：10.1002/jmor.1094
更新日期：2002-05-01 00:00:00
abstract：:The orientation of the semicircular canals of the inner ear in the skull of vertebrates is one of the determinants of the capacity of this system to detect a given rotational movement of the head. Past functional studies on the spatial orientation of the semicircular canals essentially focused on the lateral semicircu...
journal_title：Journal of morphology
pub_type： 杂志文章
doi：10.1002/jmor.20665
更新日期：2017-05-01 00:00:00
abstract：:Larvae of sea stars are surrounded by an extracellular matrix called the hyaline layer. The lectin-binding properties of this matrix were investigated in an ultrastructural study of Patiriella species having different modes of development. The planktonic bipinnaria and brachiolaria of P. regularis and the planktonic b...
journal_title：Journal of morphology
pub_type： 杂志文章
doi：10.1002/(SICI)1097-4687(199911)242:2<91::AID-JMOR2
更新日期：1999-11-01 00:00:00
abstract：:To our knowledge, this paper presents the first description of neuroendocrine complexes in invertebrates. Neuroendocrine complexes have been identified in the lamina propria of the snail gut by light microscopy using Giemsa-stained, deplasticized sections and by electron microscopy. Silver impregnations and immunocyto...
journal_title：Journal of morphology
pub_type： 杂志文章
doi：10.1002/jmor.1051990307
更新日期：1989-03-01 00:00:00
abstract：:Growth dynamics of the primary spine of the cidaroid sea urchin Phyllacanthus imperialis was assessed for the first time using pulsed (26) Mg-labeling and NanoSIMS isotopic imaging. The sea urchin was incubated twice (for 48 h) in artificial seawater with elevated level of (26) Mg. After each labeling event, the sea u...
journal_title：Journal of morphology
pub_type： 杂志文章
doi：10.1002/jmor.20260
更新日期：2014-07-01 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
pub_type： 杂志文章
doi：10.1002/jmor.20685
更新日期：2017-07-01 00:00:00
