Results 21 to 30 of about 19,580,326 (251)

An evolutionary genomics view on neuropeptide genes in Hydrozoa and Endocnidozoa (Myxozoa)

open access: yesBMC Genomics, 2021
Background The animal phylum Cnidaria consists of six classes or subphyla: Hydrozoa, Scyphozoa, Cubozoa, Staurozoa, Anthozoa, and Endocnidozoa. Cnidarians have an early evolutionary origin, diverging before the emergence of the Bilateria.
Thomas L. Koch   +2 more
doaj   +1 more source

Regenerative Approaches in the Nervous System

open access: yes, 2023
The nervous system is the most unique system of the human body in more than one way. The excitable tissue that forms the nervous system generates and transmits electrical impulses that are responsible for command and control of the entire body and its ...
Reshamwala, Ronak, Shah, Megha
core   +1 more source

The ventral epithelium of Trichoplax adhaerens deploys in distinct patterns cells that secrete digestive enzymes, mucus or diverse neuropeptides

open access: yesBiology Open, 2019
The disk-shaped millimeter-sized marine animal, Trichoplax adhaerens, is notable because of its small number of cell types and primitive mode of feeding.
Tatiana D. Mayorova   +4 more
doaj   +1 more source

Neuromuscular development of Aeolidiella stephanieae Valdez, 2005 (Mollusca, Gastropoda, Nudibranchia) [PDF]

open access: yes, 2010
Background: Studies on the development of the nervous system and the musculature of invertebrates have become more sophisticated and numerous within the last decade and have proven to provide new insights into the evolutionary history of organisms.
Annette Klussmann-Kolb   +5 more
core   +1 more source

The neuromuscular system of Pycnophyes kielensis (Kinorhyncha: Allomalorhagida) investigated by confocal laser scanning microscopy

open access: yesEvoDevo, 2016
Background Kinorhynchs are ecdysozoan animals with a phylogenetic position close to priapulids and loriciferans. To understand the nature of segmentation within Kinorhyncha and to infer a probable ancestry of segmentation within the last common ancestor ...
Andreas Altenburger
doaj   +1 more source

Slit-Robo expression in the leech nervous system: insights into eyespot evolution

open access: yesCell & Bioscience, 2023
Background Slit and Robo are evolutionarily conserved ligand and receptor proteins, respectively, but the number of slit and robo gene paralogs varies across recent bilaterian genomes.
Hee-Jin Kwak   +9 more
doaj   +1 more source

The development of early pioneer neurons in the annelid Malacoceros fuliginosus

open access: yesBMC Evolutionary Biology, 2020
Background Nervous system development is an interplay of many processes: the formation of individual neurons, which depends on whole-body and local patterning processes, and the coordinated growth of neurites and synapse formation.
Suman Kumar   +3 more
doaj   +1 more source

Studies of adipose tissue in humans with special reference to innervation by the sympathetic nervous system [PDF]

open access: yes, 2009
PhDThis thesis reports the effects in vivo of the sympathetic nervous system (SNS) in human subcutaneous abdominal white adipose tissue (WAT) and other tissues involved in energy storage and utilisation. Cannulation of superficial veins draining skin,
Lawence, Victor
core   +4 more sources

Thrombospondin-4, an extracellular matrix protein expressed in the developing and adult nervous system promotes neurite outgrowth [PDF]

open access: yes, 1995
Extracellular matrix (ECM) molecules are involved in multiple aspects of cell-to-cell signaling during development and in the adult. In nervous system development, specific recognition processes, e.g., during axonal pathfinding and synaptogenesis involve
Arber, S., P Caroni, S Arber, Caroni, P.
core   +1 more source

Within-family plasticity of nervous system architecture in Syllidae (Annelida, Errantia)

open access: yesFrontiers in Zoology, 2020
Background The ground pattern underlying the nervous system of the last common ancestor in annelids was long thought to be settled, consisting of a dorsal brain, circumoesophageal connectives and a subepithelial, ladder-like ventral nerve cord with ...
Hannah Schmidbaur   +4 more
doaj   +1 more source

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