journal
Journals Anatomical Record : Advances i...

Anatomical Record : Advances in Integrative Anatomy and Evolutionary Biology

https://read.qxmd.com/read/38682340/a-reinterpretation-of-human-breast-anatomy-includes-all-the-layers-of-the-anterior-body-wall
#21
JOURNAL ARTICLE
Margaret I Hall, Ana Suarez-Venot, Tyler Lindvall, Jeffrey H Plochocki, Aryeh Grossman, Jose R Rodriguez-Sosa, Georgina M Voegele, Dominik R Valdez, Justin A Georgi
Mammary glands define mammals as a group, yet a comprehensive anatomical description of the mammary gland does not exist for almost any mammalian species. In humans, the anatomical and surgical literature provide conflicting and incomplete descriptions of the gross anatomy of the breast. We dissected 9 male and 15 female human body donors to clarify this gross anatomy. We found that, like other epidermally derived glands of the body, the mammary glandular tissue is constrained to a membrane-bound, central structure referred to as the corpus mammae in the surgical literature, and not dispersed throughout the breast as typically described in the anatomical literature...
April 29, 2024: Anatomical Record: Advances in Integrative Anatomy and Evolutionary Biology
https://read.qxmd.com/read/38668805/how-smart-was-t-rex-testing-claims-of-exceptional-cognition-in-dinosaurs-and-the-application-of-neuron-count-estimates-in-palaeontological-research
#22
JOURNAL ARTICLE
Kai R Caspar, Cristián Gutiérrez-Ibáñez, Ornella C Bertrand, Thomas Carr, Jennifer A D Colbourne, Arthur Erb, Hady George, Thomas R Holtz, Darren Naish, Douglas R Wylie, Grant R Hurlburt
Recent years have seen increasing scientific interest in whether neuron counts can act as correlates of diverse biological phenomena. Lately, Herculano-Houzel (2023) argued that fossil endocasts and comparative neurological data from extant sauropsids allow to reconstruct telencephalic neuron counts in Mesozoic dinosaurs and pterosaurs, which might act as proxies for behaviors and life history traits in these animals. According to this analysis, large theropods such as Tyrannosaurus rex were long-lived, exceptionally intelligent animals equipped with "macaque- or baboon-like cognition", whereas sauropods and most ornithischian dinosaurs would have displayed significantly smaller brains and an ectothermic physiology...
April 26, 2024: Anatomical Record: Advances in Integrative Anatomy and Evolutionary Biology
https://read.qxmd.com/read/38665006/male-genital-system-of-ameiva-ameiva-squamata-teiidae
#23
JOURNAL ARTICLE
Érica da Silva Maciel, Rodrigo Zieri, Selma Maria de Almeida-Santos
Understanding squamate reproductive morphology is crucial for investigating ecological, behavioral, and evolutionary questions. Here, we describe the anatomy and histology of the male genital system of Ameiva ameiva from southeastern Brazil. Ten adult males were dissected to characterize genital macroscopy and collect fragments of the testes, gonadoducts, and kidneys for histological examination. We examined 10 transverse histological sections per individual and measured the epithelial height of the epididymis and ductus deferens...
April 25, 2024: Anatomical Record: Advances in Integrative Anatomy and Evolutionary Biology
https://read.qxmd.com/read/38655735/the-pseudosuchian-record-in-paleohistology-a-small-review
#24
JOURNAL ARTICLE
Torsten M Scheyer
Archosauria originated around the Earth's largest biotic crisis that severely affected all ecosystems globally, the Permotriassic Mass extinction event, and comprises two crown-group lineages: the bird-lineage and the crocodylian lineage. The bird lineage includes the iconic pterosaurs, as well as dinosaurs and birds, whereas the crocodylian lineage includes clades such as aetosaurs, poposaurs, "rauisuchians," as well as Crocodylomorpha; the latter being represented today only by less than 30 extant species of Crocodylia...
April 24, 2024: Anatomical Record: Advances in Integrative Anatomy and Evolutionary Biology
https://read.qxmd.com/read/38654480/the-scimitar-cat-homotherium-from-the-submerged-continental-shelf-of-the-gulf-coast-of-texas
#25
JOURNAL ARTICLE
John A Moretti, Deanna Flores, Christopher J Bell, Will Godwin, Adam Hartstone-Rose, Patrick J Lewis
The machairodontine felid Homotherium achieved a global geographic distribution throughout much of the Pleistocene. Accordingly, that large carnivore is important for understanding patterns of community composition. We report on a new record of Homotherium based on a fragmentary premaxilla-maxilla discovered on McFaddin Beach, Texas, along the Gulf of Mexico. Skeletal remains of extinct, Pleistocene vertebrates accumulate on McFaddin Beach. Those fossils appear to originate from submerged deposits on the continental shelf in the Gulf of Mexico, an area that was subaerially exposed in the Late Pleistocene during glacial intervals...
April 23, 2024: Anatomical Record: Advances in Integrative Anatomy and Evolutionary Biology
https://read.qxmd.com/read/38646928/morphological-diversity-of-saber-tooth-upper-canines-and-its-functional-implications
#26
JOURNAL ARTICLE
Caitlin D Shelbourne, Stephan Lautenschlager
Elongated upper canine teeth, commonly known as saber-teeth, have evolved three times within the sub-order Feliformia. The species that wielded them flourished throughout the Cenozoic and have historically been separated into two morphological groups: the dirk-tooths with longer, flatter canines, and the scimitar-tooths with shorter, serrated teeth. However, quantitative morphological analysis has not been conducted on these teeth to determine the true amount of diversity within the group, and how the upper canine morphology of extant feliforms compared to their extinct relatives has also not been explored...
April 22, 2024: Anatomical Record: Advances in Integrative Anatomy and Evolutionary Biology
https://read.qxmd.com/read/38634509/evaluating-extinct-pseudosuchian-body-mass-estimates-using-a-femur-volume-based-model
#27
JOURNAL ARTICLE
Holly N Woodward, Paul Aubier, Mariana Valéria Araújo de Sena, Jorge Cubo
The clade Pseudosuchia appeared 250 million years ago. The exclusively semi-aquatic Crocodylia, which includes crocodiles, alligators, caimans, and gharials is the only surviving subgroup. Investigating Crocodylia biology is pivotal for inferring traits of extinct pseudosuchians. Alligator femur length is widely used for modeling pseudosuchian body mass, but the regression is influenced by sex and captivity status, leading to potential accuracy problems. An alternative model results from the correlation between alligator femur volume and body mass, which is unaffected by those covariates...
April 18, 2024: Anatomical Record: Advances in Integrative Anatomy and Evolutionary Biology
https://read.qxmd.com/read/38623888/angiogenic-and-anti-angiogenic-factors-during-the-post-hatching-growth-of-the-quail-coturnix-coturnix-japonica-spleen
#28
JOURNAL ARTICLE
Bayram Bayram, Narin Liman, Emel Alan, Hakan Sağsöz
Vascular endothelial growth factor (VEGF) family members are responsible for endothelial cells' growth, proliferation, migration, angiogenesis, vascular permeability, and differentiation and proliferation of non-endothelial cell types. VEGF and its receptors are found in mammalian lymphoid organs. The present study was conceived to determine (a) the presence and localization of angiogenic VEGF and its receptors (Fms-like tyrosine kinase 1 [Flt1/fms], fetal liver kinase 1 [Flk1]/kinase insert domain receptor [KDR], Fms-like tyrosine kinase 4 [Flt4]) and vascular endothelial growth inhibitor (VEGI) in the quail spleen; and (b) whether their expressions in the spleen components change during the post-hatching growth of the organ, using immunohistochemistry...
April 16, 2024: Anatomical Record: Advances in Integrative Anatomy and Evolutionary Biology
https://read.qxmd.com/read/38618897/comparative-anatomy-and-evolution-of-the-atlantoaxial-complex-in-the-fossorial-lineage-amphisbaenia-squamata-lacertoidea
#29
JOURNAL ARTICLE
Clara Araújo Salvino, Cristian Hernandéz-Morales, Juan Diego Daza, Pedro M Sales Nunes
The atlas and axis are the first two vertebrae from the cervical series; these two vertebrae are responsible for neck flexion, extension, and rotation movements, while providing insertion points for muscles and tendons. Amphisbaenia is a group of fossorial squamates known for having four distinctive head shapes, which are related to different excavation methods. However, little is known about the relationship between these different digging patterns and the anatomy and evolution of the atlantoaxial complex...
April 15, 2024: Anatomical Record: Advances in Integrative Anatomy and Evolutionary Biology
https://read.qxmd.com/read/38618880/the-vascular-footprint-in-cardiac-homeostasis-and-hypertensive-heart-disease-a-link-between-apelin-receptor-vascular-endothelial-growth-factor-and-neuronal-nitric-oxide-synthase
#30
JOURNAL ARTICLE
Alexandar Iliev, Lyubomir Gaydarski, Georgi Kotov, Boycho Landzhov, Vidin Kirkov, Stancho Stanchev
Recent studies have suggested a connection between disturbances of the apelin system and various cardiac pathologies, including hypertension, heart failure, and atherosclerosis. Vascular endothelial growth factor is crucial for cardiac homeostasis as a critical molecule in cardiac angiogenesis. Neuronal nitric oxide synthase is an essential enzyme producing nitric oxide, a key regulator of vascular tone. The present study aims to shed light upon the complex interactions between these three vital signaling molecules and examine their changes with the progression of hypertensive heart disease...
April 15, 2024: Anatomical Record: Advances in Integrative Anatomy and Evolutionary Biology
https://read.qxmd.com/read/38613218/comparing-cranial-biomechanics-between-barbourofelis-fricki-and-smilodon-fatalis-is-there-a-universal-killing-bite-among-saber-toothed-predators
#31
JOURNAL ARTICLE
Borja Figueirido, Shane Tucker, Stephan Lautenschlager
Saber-tooths, extinct apex predators with long and blade-like upper canines, have appeared iteratively at least five times in the evolutionary history of vertebrates. Although saber-tooths exhibit a relatively diverse range of morphologies, it is widely accepted that all killed their prey using the same predatory behavior. In this study, we CT-scanned the skull of Barbourofelis fricki and compared its cranial mechanics using finite element analysis (FEA) with that of Smilodon fatalis. Our aim was to investigate potential variations in killing behavior between two dirk-toothed sabretooths from the Miocene and Pleistocene of North America...
April 13, 2024: Anatomical Record: Advances in Integrative Anatomy and Evolutionary Biology
https://read.qxmd.com/read/38613176/postcranial-anomalies-of-eocene-freshwater-pleurodiran-and-cryptodiran-turtles-from-the-spanish-duero-basin
#32
JOURNAL ARTICLE
Andrea Guerrero, Francisco Ortega, Santiago Martín de Jesús, Adán Pérez-García
Testudines are one of the best-represented taxonomic groups among the Paleogene taxa of the Duero Basin (Castile and Leon Autonomous Community, central Spain). Among them, Neochelys (Podocnemidide) and Allaeochelys (Carettochelyidae) are most abundant, allowing the population to be assessed for osteological anomalies. The abundance of postcranial remains of both taxa allows us to identify several individuals with potential anomalies, mostly in their shells. Some of them have already been described in previous studies, but most of them are still unpublished...
April 12, 2024: Anatomical Record: Advances in Integrative Anatomy and Evolutionary Biology
https://read.qxmd.com/read/38606671/craniofacial-anomalies-in-schizophrenia-relevant-gfap-hmox1-0-12m-mice
#33
JOURNAL ARTICLE
Ayda Tavitian, Joseph Somech, Badrouyk Chamlian, Adrienne Liberman, Carmela Galindez, Hyman M Schipper
Subtle craniofacial dysmorphology has been reported in schizophrenia patients. This dysmorphology includes midline facial elongation, frontonasal anomalies and a sexually dimorphic deviation from normal directional asymmetry of the face, with male patients showing reduced and female patients showing enhanced facial asymmetry relative to healthy control subjects. GFAP.HMOX10-12m transgenic mice (Mus musculus) that overexpress heme oxygenase-1 in astrocytes recapitulate many schizophrenia-relevant neurochemical, neuropathological and behavioral features...
April 12, 2024: Anatomical Record: Advances in Integrative Anatomy and Evolutionary Biology
https://read.qxmd.com/read/38600433/early-synapsids-neurosensory-diversity-revealed-by-ct-and-synchrotron-scanning
#34
JOURNAL ARTICLE
J Benoit, R Araujo, E S Lund, A Bolton, T Lafferty, Z Macungo, V Fernandez
Non-mammaliaform synapsids (NMS) represent the closest relatives of today's mammals among the early amniotes. Exploring their brain and nervous system is key to understanding how mammals evolved. Here, using CT and Synchrotron scanning, we document for the first time three extreme cases of neurosensory and behavioral adaptations that probe into the wide range of unexpected NMS paleoneurological diversity. First, we describe adaptations to low-frequency hearing and low-light conditions in the non-mammalian cynodont Cistecynodon parvus, supporting adaptations to an obligatory fossorial lifestyle...
April 10, 2024: Anatomical Record: Advances in Integrative Anatomy and Evolutionary Biology
https://read.qxmd.com/read/38597514/who-was-the-real-sabertooth-predator-thylacosmilus-or-thylacoleo
#35
JOURNAL ARTICLE
Christine M Janis
Sabertoothed mammalian predators, all now extinct, were almost exclusively feloid carnivorans (Eutheria, Placentalia): here a couple of extinct metatherian predators are considered in comparison with the placental sabertooths. Thylacosmilus (the "marsupial sabertooth") and Thylacoleo (the "marsupial lion") were both relatively large (puma-sized) carnivores of the Plio-Pleistocene in the Southern Hemisphere (Argentina and Australia, respectively). Both carnivores have captured the public imagination, especially as predators that were somehow analogous to northern placental forms...
April 10, 2024: Anatomical Record: Advances in Integrative Anatomy and Evolutionary Biology
https://read.qxmd.com/read/38597113/adaptations-to-sociality-in-the-mimetic-and-auricular-musculature-of-the-african-wild-dog-lycaon-pictus
#36
JOURNAL ARTICLE
Heather F Smith, Mia A Felix, Felicia A Rocco, Leigha M Lynch, Dominik Valdez
The African wild dog (Lycaon pictus) is a highly social canid that engages in sophisticated, coordinated group hunting tactics to procure large game. It is one of the most effective hunters of the African savannah, due to its highly developed communication methods. It also has large, mobile ears which enhance its auditory capabilities while hunting and assist with thermoregulation. Recent research suggested that certain muscles of facial expression, particularly those involved with expressive eyebrow movement, evolved solely in domestic dogs (Canis familiaris) to facilitate communication with their human owners...
April 10, 2024: Anatomical Record: Advances in Integrative Anatomy and Evolutionary Biology
https://read.qxmd.com/read/38596909/cervical-anatomy-and-its-relation-to-foraging-habits-in-aquatic-birds-aves-neornithes-neoaves
#37
JOURNAL ARTICLE
Richard Buchmann, Taissa Rodrigues
Birds have extremely flexible necks, which help in their search for food. However, studies on the variation in bird cervical anatomy and its relationship with foraging are rare, despite the different habits presented between species. Here, we analyze the anatomy of the neck of aquatic birds and relate it to their foraging strategies. We dissected specimens representing four species of Charadriiformes, 11 species of Phaethoquornithes, and two specimens belonging to the outgroup Telluraves. We chose to emphasize Charadriiformes and Phaethoquornithes because they present several strategies that require cervical mobility and stability...
April 10, 2024: Anatomical Record: Advances in Integrative Anatomy and Evolutionary Biology
https://read.qxmd.com/read/38588019/bending-performance-changes-during-prolonged-canine-eruption-in-saber-toothed-carnivores-a-case-study-of-smilodon-fatalis
#38
JOURNAL ARTICLE
Z Jack Tseng
The canine of saber-toothed predators represents one of the most specialized dental structures known. Hypotheses about the function of hypertrophied canines range from display and conspecific interaction, soft food processing, to active prey acquisition. Recent research on the ontogenetic timing of skull traits indicates the adult canine can take years to fully erupt, but the consequences of prolonged eruption on inferences of canine functional morphology are missing from current discourse and have not been quantified...
April 8, 2024: Anatomical Record: Advances in Integrative Anatomy and Evolutionary Biology
https://read.qxmd.com/read/38581219/replacement-tooth-in-mesosaurs-and-new-data-on-dental-microanatomy-and-microstructure
#39
JOURNAL ARTICLE
Thiago Carlisbino, Brodsky Dantas Macedo de Farias, Fernando Antonio Sedor, Marina Bento Soares, Cesar Leandro Schultz
The Permian mesosaurs are well known for being the earliest amniotes to exhibit adaptations for living in a marine environment (Irati-Whitehill Sea). In addition to their set of skeletal features associated with aquatic dwelling life, their dentition includes important characteristics related to feeding in this habitat, which is described in this work, based on the analysis of mesosaur specimens from the Lower Permian Irati Formation of Brazil. Mesosaurs have several slender, conical teeth bordered by enamel apicobasal ridges, a feature predominantly found in aquatic amniotes...
April 6, 2024: Anatomical Record: Advances in Integrative Anatomy and Evolutionary Biology
https://read.qxmd.com/read/38567788/correction-to-the-origin-and-evolution-of-cynodontia-synapsida-therapsida-reassessment-of-the-phylogeny-and-systematics-of-the-earliest-members-of-this-clade-using-3d-imaging-technologies
#40
(no author information available yet)
No abstract text is available yet for this article.
April 3, 2024: Anatomical Record: Advances in Integrative Anatomy and Evolutionary Biology
journal
journal
41511
2
3
Fetch more papers »
Fetching more papers... Fetching...
Remove bar
Read by QxMD icon Read
×

Save your favorite articles in one place with a free QxMD account.

×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"

We want to hear from doctors like you!

Take a second to answer a survey question.