Results 41 to 50 of about 6,260 (185)

A perspective from the Mesozoic: Evolutionary changes of the mammalian skull and their influence on feeding efficiency and high‐frequency hearing

The Anatomical Record, EarlyView.
Abstract The complex evolutionary history behind modern mammalian chewing performance and hearing function is a result of several changes in the entire skeletomuscular system of the skull and lower jaw. Lately, exciting multifunctional 3D analytical methods and kinematic simulations of feeding functions in both modern and fossil mammals and their ...
Julia A. Schultz
wiley   +1 more source

Requirement for Jagged1-Notch2 signaling in patterning the bones of the mouse and human middle ear

Scientific Reports, 2017
Whereas Jagged1-Notch2 signaling is known to pattern the sensorineural components of the inner ear, its role in middle ear development has been less clear. We previously reported a role for Jagged-Notch signaling in shaping skeletal elements derived from
Camilla S. Teng, Hai-Yun Yen, Lindsey Barske, Bea Smith, Juan Llamas, Neil Segil, John Go, Pedro A. Sanchez-Lara, Robert E. Maxson, J. Gage Crump   +9 more
doaj   +1 more source

Improved Bone Conduction and Hearing Outcomes After Stapes Surgery for Otosclerosis. [PDF]

World J Otorhinolaryngol Head Neck Surg
ABSTRACT Objective To evaluate the improvement in bone conduction (BC) thresholds after stapes surgery for otosclerosis, compare the outcomes of surgical techniques, and analyze the short‐ and long‐term results to inform treatment strategies. Methods We retrospectively reviewed data from 173 patients (188 ears) who underwent total stapedectomy, partial
Zhang N, Ma XB, Wang DN, Li Y, Zheng Y, Li YX, Zhao SQ.   +6 more
europepmc   +2 more sources

3D anatomical atlas of the heads of male and female adult Chamaeleo calyptratus

The Anatomical Record, EarlyView.
The veiled chameleon is a model organism in reptile development research. Utilizing contrast‐enhanced microCT and deep learning segmentation models, we have generated the first digital atlases of the skull, nervous system, cranial muscles and hyolingual muscles.
Alice Leavey, Eloy Gálvez‐López, Anthony Herrel, Laura B. Porro   +3 more
wiley   +1 more source

Techniques for otosclerosis surgery: Ear surgery from the microscope to the endoscope - A literature review

Journal of Otology
Stapes surgery is the gold standard for managing otosclerosis. It has become increasingly appreciated to perform endoscopic ear surgery worldwide as the field of endoscopy expands.
Luana-Maria Gherasie, Catalina Voiosu, Ricardo Bartel, Razvan Hainarosie, Irina Gabriela Ionita, Maria Denisa Zica, Viorel Zainea   +6 more
doaj   +1 more source

Cerebrospinal Fluid Leak During Stapes Surgery: The Importance of Temporal Bone CT Reconstructions in Oblique Anatomically Oriented Planes

Ear, Nose & Throat Journal, 2023
Stapes gusher is a massive flow of perilymph and cerebrospinal fluid leak that fills the middle ear immediately after surgical opening of the labyrinth, such as during stapedectomy.
Massimo Re MD, Mirko Giannoni MD, Alfonso Scarpa MD, Claudia Cassandro MD, Massimo Ralli PhD, Pietro De Luca MD, Teodoro Aragona MD, Pasquale Viola MD, Ettore Cassandro MD, Federico Maria Gioacchini MD, Stefano Sellari Franceschini MD   +10 more
doaj   +1 more source

Redescription of the Triassic cynodont Cistecynodon parvus and reassessment of its phylogeny

The Anatomical Record, EarlyView.
Abstract Cynodontia is an important subclade of Therapsida that first occurred in the late Permian. It includes extinct subclades which are the non‐mammaliaform cynodonts and Mammaliaformes, with the latter ultimately giving rise to crown mammals. The systematics of non‐mammaliaform cynodonts has been extensively studied and is relatively well‐resolved,
Erin S. Lund, Frederik P. Wolvaardt, Roger M. H. Smith, Jaganmoy Jodder, Julien Benoit   +4 more
wiley   +1 more source

Evolutionary radiation of large‐bodied gorgonopsians from the lower Abrahamskraal formation of South Africa

The Anatomical Record, EarlyView.
Abstract The middle Permian represents a critical interval in therapsid evolution, when gorgonopsians emerged as some of the first specialized apex predators within terrestrial ecosystems. Despite their significance, the early diversification of Gorgonopsia in Gondwana remains poorly understood due to scarcity and fragmentary material.
Zanildo Macungo, Ricardo Araújo, Bruce S. Rubidge, Michael O. Day, Kathleen N. Dollman, Julien Benoit   +5 more
wiley   +1 more source

Oldest well‐preserved euprimate petrosal, from the early Eocene of India (Vastan Lignite Mine, Gujarat)

The Anatomical Record, EarlyView.
Abstract An exquisitely preserved, isolated partial petrosal with associated fragmentary stapes is described from the Vastan Lignite Mine (Gujarat, India), dated to the early Eocene (~54.5 Ma). Several anatomical traits (e.g., large petrosal plate; posterolateral entry of the internal carotid artery to the tympanic cavity; bony tubes surrounding the ...
Mary T. Silcox, Kenneth D. Rose, Rachel H. Dunn, Kishor Kumar, Rajendra S. Rana, Ashok Sahni, Lachham Singh, Thierry Smith, Jordan W. Crowell   +8 more
wiley   +1 more source

Clade‐wide morphological and functional variation of the sauropsid columella

The Anatomical Record, EarlyView.
Abstract The columella (=stapes) is the middle ear bone of reptiles that transmits vibrations from the environment to the inner ear. It has been shown to exhibit extensive interspecific morphological disparity in several clades; however, its morphological variation and associated functional consequences remain poorly described.
John Peacock, Serjoscha W. Evers, Tiago R. Simões, Garth M. Spellman, Daniel J. Field   +4 more
wiley   +1 more source