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Human evolution and the obstetrical dilemma: The pelvic floor hypothesis
The Anatomical Record, EarlyView.Abstract Human childbirth is mechanically difficult because a large‐headed, broad‐shouldered fetus must pass through a comparatively narrow, twisted bony birth canal. Traditional explanations of this “obstetrical dilemma” emphasize the role of bipedal locomotion in inhibiting the evolution of a wider, more spacious pelvis.
Barbara Fischer, Ekaterina Stansfield
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The Anatomical Record, EarlyView.Abstract Cells derived from the endocardium, epicardium, cardiac neural crest, and second heart field play a critical role in the formation of the valvuloseptal structures of the heart. Previous studies have shown that the expression of the transcription factor SOX9 in these cell populations is essential in the regulation of this process.
Hannah G. Tarolli +6 more
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The Anatomical Record, EarlyView.Abstract Traversodontids are non‐mammaliaform cynodonts, herbivorous to omnivorous, that lived during the Triassic. In the Late Triassic, some members of this group increased in body size relative to other cynodont lineages and evolved postcranial adaptations associated with locomotion.
Jhonata H. A. Martins, Leonardo Kerber
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Thermography in complementary assessments of head and neck muscles: A scoping review
Journal of Oral Rehabilitation, 2022INTRODUCTION Infrared thermography has the potential to help assess human head and neck muscles, as thermal variation measurements due to muscle imbalance can contribute to the evaluation and therapeutic follow-up of various clinical conditions in the ...
Leandro Pernambuco +2 more
exaly +2 more sources
, 2015 The neck is furnished by tens of muscles for flexion, extension, lateral bending, and rotation. It carries a 10-pound head for at least two-thirds of every day. These muscles are under delicate central control, and they are subject to different central and peripheral malfunctions.
Aziz Shaibani
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The Impact of Use of Dual Monitor Screens on 3D Head–Neck Posture and Activity of Neck Muscles
IIE Transactions on Occupational Ergonomics and Human Factors, 2013Ashish Nimbarte
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Neural control of superficial and deep neck muscles in humans.
Journal of Neurophysiology, 2007 Human neck muscles have a complex multi-layered architecture. The role and neural control of these neck muscles were examined in nine seated subjects performing three series of isometric neck muscle contractions: 50-N contractions in eight fixed ...
J. Blouin +3 more
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Morphometry of Human Neck Muscles
Spine, 1998Cadaveric dissections were used to study muscle morphometry.To describe systematically the musculotendinous lengths, fascicle lengths, pennation angles, and physiologic cross-sectional areas of neck and shoulder muscles implicated in head movement.In previous studies of neck-muscle anatomy, researchers described only a subset of muscle features, often ...
L K, Kamibayashi, F J, Richmond
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Co‐contraction behaviour of masticatory and neck muscles during tooth grinding
Journal of Oral Rehabilitation, 2018The objective of this study was to analyse the co-contraction behaviour of jaw and neck muscles during force-controlled experimental grinding in the supine position. Twelve symptom-free subjects were enrolled in the experimental study. Electromyographic (
N. Giannakopoulos +2 more
semanticscholar +1 more source