Results 141 to 150 of about 36,278 (268)

The pectoralis muscle orientation as an indicator of the modes of wing‐propelled locomotion in birds

open access: yesJournal of Anatomy, EarlyView.
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.
Takumi Akeda, Shin‐ichi Fujiwara
wiley   +1 more source

Cumulative effects of lifelong systemic excess growth hormone on postcranial skeletal morphology in adult mice

open access: yesJournal of Anatomy, EarlyView.
Our μCT‐based pilot study reveals size and shape disparity in the adult postcranial skeleton of growth‐hormone model (bGH) mice relative to wild‐type mice. bGH mice have larger and more sexually dimorphic bones, with a systemic radiodensity increase in bony sesamoids and associated, but typically uncalcified, soft tissues.
Joseph R. Groenke   +7 more
wiley   +1 more source

From sagittal to sprawled: Clavicular co‐option and the evolution of forelimb mechanics in talpines

open access: yesJournal of Anatomy, EarlyView.
Forelimb posture in Eulipotyphla divides into sagittal and sprawled groups with distinct scapular and clavicular orientations. First true rib strength scales with body mass, reflecting vertical ground reaction forces, whereas clavicular strength reflects differences in medially directed forces on the pectoral girdle, especially pronounced in highly ...
Shin‐ichi Fujiwara, Hiroaki Saito
wiley   +1 more source

Bone histological evidence for posture‐related load transmission in the talpid pectoral girdle

open access: yesJournal of Anatomy, EarlyView.
Bone histology of the clavicle and scapula revealed distinct load‐bearing roles within the mammalian pectoral girdle associated with different forelimb postures. Hyper‐abducted moles exhibited an enhanced load‐bearing role of the clavicle, whereas the parasagittal shrew exhibited histological features consistent with the scapula acting as the principal
Daichi Nakai
wiley   +1 more source

The impact of alignment and scaling on biological inferences from landmark‐free morphometrics

open access: yesJournal of Anatomy, EarlyView.
Landmark‐free morphometrics promises advancements in shape quantification for biology, but widespread adoption is hampered by concerns over reproducibility. We compare 3D mesh alignment and scaling protocols on a prominent landmark‐free approach, Deterministic Atlas Analysis, finding inconsistencies in centroid size distribution and variance structure.
Lucy E. Roberts   +2 more
wiley   +1 more source

Ligation of the anterior humeral circumflex artery ablates blood flow to the lesser tuberosity osteotomy in a cadaveric model. [PDF]

open access: yesJSES Rev Rep Tech
Thorne T   +8 more
europepmc   +1 more source

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