Results 51 to 60 of about 13,665 (215)

A critical reappraisal of the carotid sinus and carotid bulb: Distinguishing neurohistological function from vascular geometry

The Anatomical Record, EarlyView.
This review redefines the carotid bulb (CB) as a variable geometric dilation shaped by hemodynamics and the carotid sinus (CS) as a conserved neurohistological baroreceptor field. Distinguishing these entities clarifies a century of anatomical confusion and links geometry, neurohistology, and clinical interpretation within a unified framework ...
Răzvan Costin Tudose, Nicolae Radu, Mugurel Constantin Rusu   +2 more
wiley   +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

Lactate: brain fuel in human traumatic brain injury: a comparison with normal healthy control subjects. [PDF]

, 2015
We evaluated the hypothesis that lactate shuttling helps support the nutritive needs of injured brains. To that end, we utilized dual isotope tracer [6,6-(2)H2]glucose, that is, D2-glucose, and [3-(13)C]lactate techniques involving arm vein tracer ...
Brooks, George A, Glenn, Thomas C, Horning, Michael A, Hovda, David A, Martin, Neil A, McArthur, David L, Vespa, Paul   +6 more
core   +1 more source

Abnormal jugular valves are not the sole explanation of an impaired outflow from the cranial cavity through the internal jugular veins: results of in silico studies

Veins and Lymphatics, 2022
Background. Currently, pathological jugular valves are thought to be the main cause of altered hemodynamics in the internal jugular veins, the so-called chronic cerebrospinal venous insufficiency.
Marian Simka, Syed Atif Iqrar, Anas Rashid, Aiman Rashid, Marta Nowak   +4 more
doaj   +1 more source

The petrotympanic canal (Huguier canal): Evolutionary, anatomical, and medical perspectives

The Anatomical Record, EarlyView.
Abstract The petrotympanic canal, traditionally referred to as Civinini's or Huguier's canal, represents an anatomical passage connecting the middle ear and temporomandibular joint (TMJ). Despite its early description, its structural complexity and functional significance have often been underestimated. In this study, we combined historical, anatomical,
Andrea Papini, Nicola Montemurro, Ferdinando Paternostro, Immacolata Belviso, Massimo Galli, Petra Martini, Licia Uccelli, Jacopo Moggi‐Cecchi, Gregorio Oxilia   +8 more
wiley   +1 more source

Jugulotympanic paragangliomas in southern Finland : a 40-year experience suggests individualized surgical management [PDF]

, 2016
Treatment of jugulotympanic paragangliomas (JTPGLs) remains challenging with no clear guidelines for management or follow-up. The aim of this retrospective case-note study was to assess long-term results of operatively and conservatively managed JTPGLs ...
Anttila, Turkka, Jero, Jussi, Makitie, Antti, Nicoli, Taija K., Sinkkonen, Saku T.   +4 more
core   +1 more source

Jugular Foramen's Paraganglioma in a Patient with Von Hippel-Lindau Disease: Case Report

Brazilian Neurosurgery, 2021
Glomus jugular tumors, also known as paragangliomas (PGLs), are rare and related to several clinical syndromes described. These are located in the carotid body, the jugular glomus, the tympanic glomus and the vagal glomus.
Barbara Casalecchi Pereira, Julia Dallana Aznar, Amélia Limongi Zambon, Diogo Fabricio Coelho de Melo, Marcelo Nery Silva   +4 more
doaj   +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

Glomus jugulare tumor presenting as mastoiditis in a patient with familial paraganglioma syndrome: A case report and review of the literature

Interdisciplinary Neurosurgery, 2020
Glomus jugulare paragangliomas (PGLs) are rare, slow-growing, hypervascular lesions that represent a type of extra-adrenal PGL, originating within the wall of jugular bulb. We report the first case of a 59-year-old woman with hereditary PGL syndrome, who
Georgios Alexopoulos, Joshua Sappington, Philippe Mercier, Richard Bucholz, Jeroen Coppens   +4 more
doaj   +1 more source