Results 131 to 140 of about 29,170 (291)

Bioerosion traces in bones reveal an increase in ethological diversity in the insect exploitation of carcasses in the late Triassic

The Anatomical Record, EarlyView.
Abstract This study presents the first detailed description of bioerosion traces produced by insects in bones from the Santa Cruz Sequence (early Carnian, Santa Maria Supersequence, Brazil). An array of traces is reported, consisting of notches, a tube, trails of grooves attributed to the ichnotaxon Osteocallis mandibulus and ornamented depressions ...
Lucca S. Cunha, Francesco Battista, Heitor Francischini   +2 more
wiley   +1 more source

Morphological variation of the conus arteriosus in Chondrichthyes: Implications for ecology and evolution

The Anatomical Record, EarlyView.
Abstract Cartilaginous fish have diverse morphological traits that are essential for understanding their evolutionary history and ecological adaptations. However, the conus arteriosus and its valves, key components of the heart and blood circulation, have been underexplored in phylogenetic and ecomorphological contexts.
Maria Clara El Bayeh de Andrade, Karla Diamantina de Araújo Soares   +1 more
wiley   +1 more source

Distinct GABAergic modulation of timing-dependent LTP in CA1 pyramidal neurons along the longitudinal axis of the mouse hippocampus

iScience
Summary: Synaptic plasticity in the hippocampus underlies episodic memory formation, with dorsal hippocampus being instrumental for spatial memory whereas ventral hippocampus is crucial for emotional learning.
Babak Khodaie, Elke Edelmann, Volkmar Leßmann   +2 more
doaj   +1 more source

Ocular morphology and morphometry of the great egret (Ardea alba): A comprehensive anatomical description

The Anatomical Record, EarlyView.
Abstract Ardea alba (Linnaeus, 1758) is widely distributed, yet knowledge of its ocular morphology remains limited. This study described the morphometry and morphology of the eyeball and its accessory glands in six specimens using radiography, morphometry, light and scanning electron microscopy, and 3D scanning.
Julia Vaz Feio, Max Alex Santos Ferreira, Iara Fernanda Lima do Espírito Santo, Elane Guerreiro Giese, Érika Branco, Antônio Basílio Guerreiro Junior, Ana Rita de Lima   +6 more
wiley   +1 more source

Taxonomic and anatomical comments on “Traversodon(?) major” von Huene, 1936 (Cynodontia) from the Middle Triassic of Brazil

The Anatomical Record, EarlyView.
Abstract Traversodontids were diverse non‐mammaliaform cynodonts that occupied herbivorous and omnivorous niches during the Middle and Late Triassic. In Brazil, they are particularly well represented in the Santa Maria Supersequence, although the taxonomic status of some historically described taxa remains uncertain.
Leonardo Kerber, Ingmar Werneburg
wiley   +1 more source

Spreading depolarization is followed by seizure-like activation of the hippocampus: potential mechanism of migraine-aura triggered seizures

The Journal of Headache and Pain
Background Propagation of spreading depolarization (SD), a wave of transient cellular depolarization, over the cerebral cortex drives migraine aura symptoms.
Maria P. Smirnova, Irina V. Pavlova, Lyudmila V. Vinogradova   +2 more
doaj   +1 more source

The dorsoventral regulatory gene cassette spätzle/Toll/cactus controls the potent antifungal response in Drosophila adults [PDF]

The cytokine-induced activation cascade of NF-kappaB in mammals and the activation of the morphogen dorsal in Drosophila embryos show striking structural and functional similarities (Toll/IL-1, Cactus/I-kappaB, and dorsal/NF-kappaB).
Michaut, L., Nicolas, E., Hoffmann, J. A., Lemaitre, B., Reichhart, J. M.   +4 more
core   +2 more sources

Dorsoventral [PDF]

, 2020
openaire   +1 more source

Anatomical and histological characterization of the heart of the scarlet ibis (Eudocimus ruber)

The Anatomical Record, EarlyView.
The graphical abstract illustrates the scarlet ibis (Eudocimus ruber) and two views of its heart (ventral and dorsal), highlighting its external morphology. The study also employed complementary approaches, including morphometric analysis, radiography, histological examination, and scanning electron microscopy, to provide a comprehensive ...
Beatriz Rosa Silva, Maria Gabriela Aparecida Farias Pereira, Max Alex Santos Ferreira, Júlia Vaz Feio, Elane Guerreiro Giese, Érika Branco, Antônio Basílio Guerreiro Junior, Ana Rita de Lima   +7 more
wiley   +1 more source

The pectoralis muscle orientation as an indicator of the modes of wing-propelled locomotion in birds. [PDF]

J Anat
The pectoralis orientation of birds was consistent with the orientation of the aerodynamic force acting on the wing, varying by wing‐propelled locomotion (WPL) mode. The skeletal morphology unique to each WPL mode, related to the origin/insertion of the pectoralis, may be associated with these functional demands of pectoralis orientation.
Akeda T, Fujiwara SI.
europepmc   +2 more sources