1
40
4
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Text
A resource consisting primarily of words for reading. Examples include books, letters, dissertations, poems, newspapers, articles, archives of mailing lists. Note that facsimiles or images of texts are still of the genre Text.
URL Address
<a href="http://doi.org/10.1002/ar.24116" target="_blank" rel="noreferrer noopener">http://doi.org/10.1002/ar.24116</a>
Rights
Article information provided for research and reference use only. All rights are retained by the journal listed under publisher and/or the creator(s).
NEOMED College
NEOMED College of Medicine
NEOMED Department
Department of Anatomy & Neurobiology
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
Anatomy and Ontogeny of the Mandibular Symphysis in Alligator mississippiensis.
Publisher
An entity responsible for making the resource available
Anatomical record (Hoboken, N.J. : 2007)
Date
A point or period of time associated with an event in the lifecycle of the resource
2019
2019-03
Subject
The topic of the resource
feeding apparatus; Meckel's cartilage; sutural ligament; trigeminal
Creator
An entity primarily responsible for making the resource
Lessner Emily J; Gant Cortaiga A; Hieronymus Tobin L; Vickaryous Matthew K; Holliday Casey M
Description
An account of the resource
Crocodylians evolved some of the most characteristic skulls of the animal kingdom with specializations for semiaquatic and ambush lifestyles, resulting in a feeding apparatus capable of tolerating high biomechanical loads and bite forces and a head with a derived sense of trigeminal-nerve-mediated touch. The mandibular symphysis accommodates these specializations being both at the end of a biomechanical lever and an antenna for sensation. Little is known about the anatomy of the crocodylian mandibular symphysis, hampering our understanding of form, function, and evolution of the joint in extant and extinct lineages. We explore mandibular symphysis anatomy of an ontogenetic series of Alligator mississippiensis using imaging, histology, and whole mount methods. Complex sutural ligaments emanating about a midline-fused Meckel's cartilage bridge the symphysis. These tissues organize during days 37-42 of in ovo development. However, interdigitations do not manifest until after hatching. These soft tissues leave a hub and spoke-like bony morphology of the symphyseal plate, which never fuses. Interdigitation morphology varies within the symphysis suggesting differential loading about the joint. Neurovascular canals extend throughout the mandibles to alveoli, integument, and bone adjacent to the symphysis. These features suggest the Alligator mandibular symphysis offers compliance in an otherwise rigid skull. We hypothesize a fused Meckel's cartilage offers stiffness in hatchling mandibles prior to the development of organized sutural ligaments and mineralized bone while offering a scaffold for somatic growth. The porosity of the dentaries due to neurovascular tissues likely allows transmission of sensory and proprioceptive information from the surroundings and the loaded symphysis. Anat Rec, 2019. (c) 2019 Wiley Periodicals, Inc.
Identifier
An unambiguous reference to the resource within a given context
<a href="http://doi.org/10.1002/ar.24116" target="_blank" rel="noreferrer noopener">10.1002/ar.24116</a>
2019
Anatomical Record (Hoboken
Anatomical record (Hoboken, N.J. : 2007)
Department of Anatomy & Neurobiology
feeding apparatus
Gant Cortaiga A
Hieronymus Tobin L
Holliday Casey M
Lessner Emily J
Meckel's cartilage
N.J. : 2007)
NEOMED College of Medicine
sutural ligament
trigeminal
Vickaryous Matthew K
-
Text
A resource consisting primarily of words for reading. Examples include books, letters, dissertations, poems, newspapers, articles, archives of mailing lists. Note that facsimiles or images of texts are still of the genre Text.
URL Address
<a href="http://doi.org/10.1002/ar.24326" target="_blank" rel="noreferrer noopener">http://doi.org/10.1002/ar.24326</a>
Rights
Article information provided for research and reference use only. All rights are retained by the journal listed under publisher and/or the creator(s).
ISSN
1932-8494
Search for Full-text
Locate full-text within NEOMED Library's e-journal collections
<a href="http://ezproxy.neomed.idm.oclc.org/login?url=http://doi.org/10.1002/ar.24326" target="_blank" rel="noreferrer noopener">NEOMED Full-text Holding (if available) - Proxy DOI: 10.1002/ar.24326</a>
<p>Users with a NEOMED Library login can search for full-text journal articles at the following url: <a href="https://libraryguides.neomed.edu/home">https://libraryguides.neomed.edu/home</a></p>
Update Year & Number
January 2020 Update
NEOMED College
NEOMED College of Medicine
NEOMED Department
Department of Anatomy & Neurobiology
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
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Comparative dental anatomy in newborn primates: Cusp mineralization
Publisher
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Anatomical Record (Hoboken, N.J.: 2007)
Date
A point or period of time associated with an event in the lifecycle of the resource
2019
2019-12-04
Subject
The topic of the resource
catarrhine; deciduous; dentition; platyrrhine
Creator
An entity primarily responsible for making the resource
Paddock Kelsey; Zeigler Larissa; Harvey Brianna; Prufrock Kristen A; Liptak Jordan M; Ficorilli Courtney M; Hogg Russell T; Bonar Christopher J; Evans Sian; Williams Lawrence; Vinyard Christopher J; DeLeon Valerie B; Smith Timothy D
Description
An account of the resource
Previous descriptive work on deciduous dentition of primates has focused disproportionately on great apes and humans. To address this bias in the literature, we studied 131 subadult nonhominoid specimens (including 110 newborns) describing deciduous tooth morphology and assessing maximum hydroxyapatite density (MHD). All specimens were CT scanned at 70 kVp and reconstructed at 20.5-39 μm voxels. Grayscale intensity from scans was converted to hydroxyapatite (HA) density (mg HA/cm3 ) using a linear conversion of grayscale values to calibration standards of known HA density (R2 = .99). Using Amira software, mineralized dental tissues were captured by segmenting the tooth cusps first and then capturing the remainder of the teeth at descending thresholds of gray levels. We assessed the relationship of MHD of selected teeth to cranial length using Pearson correlation coefficients. In monkeys, anterior teeth are more mineralized than postcanine teeth. In tarsiers and most lemurs and lorises, postcanine teeth are the most highly mineralized. This suggests that monkeys have a more prolonged process of dental mineralization that begins with incisors and canines, while mineralization of postcanine teeth is delayed. This may in part be a result of relatively late weaning in most anthropoid primates. Results also reveal that in lemurs and lorises, MHD of the mandibular first permanent molar (M1 ) negatively correlates with cranial length. In contrast, the MHD of M1 positively correlates with cranial length in monkeys. This supports the hypothesis that natural selection acts independently on dental growth as opposed to mineralization and indicates clear phylogenetic differences among primates.
Identifier
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<a href="http://doi.org/10.1002/ar.24326" target="_blank" rel="noreferrer noopener">10.1002/ar.24326</a>
PMID: 31802627
Format
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Journal Article
2019
Anatomical Record (Hoboken
Anatomical Record (Hoboken, N.J.: 2007)
Bonar Christopher J
catarrhine
deciduous
DeLeon Valerie B
Dentition
Department of Anatomy & Neurobiology
Evans Sian
Ficorilli Courtney M
Harvey Brianna
Hogg Russell T
January 2020 Update
Journal Article
Liptak Jordan M
N.J.: 2007)
NEOMED College of Medicine
Paddock Kelsey
platyrrhine
Prufrock Kristen A
Smith Timothy D
Vinyard Christopher J
Williams Lawrence
Zeigler Larissa
-
Text
A resource consisting primarily of words for reading. Examples include books, letters, dissertations, poems, newspapers, articles, archives of mailing lists. Note that facsimiles or images of texts are still of the genre Text.
URL Address
<a href="http://doi.org/10.1002/ar.23991" target="_blank" rel="noreferrer noopener">http://doi.org/10.1002/ar.23991</a>
Rights
Article information provided for research and reference use only. All rights are retained by the journal listed under publisher and/or the creator(s).
Pages
745-760
Issue
5
Volume
302
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
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A Comparison of the Cortical Structure of the Bowhead Whale (Balaena mysticetus), a Basal Mysticete, with Other Cetaceans
Publisher
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Anatomical Record (Hoboken, N.J.: 2007)
Date
A point or period of time associated with an event in the lifecycle of the resource
2019
2019-05
Subject
The topic of the resource
baleen whale; cytoarchitecture; humpback whale; minke whale; sperm whale
Creator
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Raghanti Mary Ann; Wicinski Bridget; Meierovich Rachel; Warda Tahia; Dickstein Dara L; Reidenberg Joy S; Tang Cheuk Y; George John C; Hans Thewissen J G M; Butti Camilla; Hof Patrick R
Description
An account of the resource
Few studies exist of the bowhead whale brain and virtually nothing is known about its cortical cytoarchitecture or how it compares to other cetaceans. Bowhead whales are one of the least encephalized cetaceans and occupy a basal phylogenetic position among mysticetes. Therefore, the bowhead whale is an important specimen for understanding the evolutionary specializations of cetacean brains. Here, we present an overview of the structure and cytoarchitecture of the bowhead whale cerebral cortex gleaned from Nissl-stained sections and magnetic resonance imaging (MRI) in comparison with other mysticetes and odontocetes. In general, the cytoarchitecture of cetacean cortex is consistent in displaying a thin cortex, a thick, prominent layer I, and absence of a granular layer IV. Cell density, composition, and width of layers III, V, and VI vary among cortical regions, and cetacean cortex is cell-sparse relative to that of terrestrial mammals. Notably, all regions of the bowhead cortex possess high numbers of von Economo neurons and fork neurons, with the highest numbers observed at the apex of gyri. The bowhead whale is also distinctive in having a significantly reduced hippocampus that occupies a space below the corpus callosum within the lateral ventricle. Consistent with other balaenids, bowhead whales possess what appears to be a blunted temporal lobe, which is in contrast to the expansive temporal lobes that characterize most odontocetes. The present report demonstrates that many morphological and cytoarchitectural characteristics are conserved among cetaceans, while other features, such as a reduced temporal lobe, may characterize balaenids among mysticetes. Anat Rec, 2018. © 2018 Wiley Periodicals, Inc. Anat Rec, 302:745-760, 2019. © 2018 Wiley Periodicals, Inc.
Identifier
An unambiguous reference to the resource within a given context
<a href="http://doi.org/10.1002/ar.23991" target="_blank" rel="noreferrer noopener">10.1002/ar.23991</a>
2019
Anatomical Record (Hoboken
Anatomical Record (Hoboken, N.J.: 2007)
Baleen whale
Butti Camilla
cytoarchitecture
Department of Anatomy & Neurobiology
Dickstein Dara L
George John C
Hans Thewissen J G M
Hof Patrick R
humpback whale
June 2019 Update
Meierovich Rachel
minke whale
N.J.: 2007)
NEOMED College of Medicine
Raghanti Mary Ann
Reidenberg Joy S
sperm whale
Tang Cheuk Y
Warda Tahia
Wicinski Bridget
-
Text
A resource consisting primarily of words for reading. Examples include books, letters, dissertations, poems, newspapers, articles, archives of mailing lists. Note that facsimiles or images of texts are still of the genre Text.
URL Address
<a href="http://doi.org/10.1002/ar.24338" target="_blank" rel="noreferrer noopener">http://doi.org/10.1002/ar.24338</a>
Rights
Article information provided for research and reference use only. All rights are retained by the journal listed under publisher and/or the creator(s).
ISSN
1932-8494
Search for Full-text
Locate full-text within NEOMED Library's e-journal collections
<a href="http://ezproxy.neomed.idm.oclc.org/login?url=http://doi.org/10.1002/ar.24338" target="_blank" rel="noreferrer noopener">NEOMED Full-text Holding (if available) - Proxy DOI: 10.1002/ar.24338</a>
<p>Users with a NEOMED Library login can search for full-text journal articles at the following url: <a href="https://libraryguides.neomed.edu/home">https://libraryguides.neomed.edu/home</a></p>
Update Year & Number
January 2020 Update
NEOMED College
NEOMED College of Medicine
NEOMED Department
Department of Anatomy & Neurobiology
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
The role of desmosomes in the ear plug formation in the bowhead whale (Balaena mysticetus)
Publisher
An entity responsible for making the resource available
Anatomical Record (Hoboken, N.J.: 2007)
Date
A point or period of time associated with an event in the lifecycle of the resource
2019
2019-12-19
Subject
The topic of the resource
desmosomes; ear plug; external acoustic meatus
Creator
An entity primarily responsible for making the resource
Rehorek Susan J; Stimmelmayr Raphaela; George John Craig; Suydam Robert; McBurney Denise L; Thewissen J G M
Description
An account of the resource
The external acoustic meatus (EAM) of most baleen whales accumulates cellular debris annually in the lumen as whales age, forming a lamellated ear plug. The bowhead whale ear plug is formed from annually molting lining of the EAM as the entire epithelium releases at the level of the stratum basale during the spring migration. Epithelial regeneration is mostly completed by the fall migration, remaining intact for 6-7 months before being torn off the following spring. Desmosomes are integral to cell-cell adhesion with connecting desmosomal cadherins desmoglein (dsg) and desmocollin (dsc). Paraffin sections of the oral cavity and EAM lining of spring and fall adult bowhead whales, as well as the EAM of spring-caught juvenile, were immunohistochemically examined for the presence of these cadherins. In all fall specimens, both cadherins occurred in all layers except the superficial keratinous layer of the oral cavity. In spring, three different conditions existed: (a) oral cavity of spring-caught adults had reduced cadherins, with superficial fissuring in its keratinized layer and vacuolation in the upper stratum spinosum; (b) EAM of juvenile spring-caught whales displayed fissuring with accompanying reduction of both cadherins in its superficial lining; and (c) EAM lining of spring-caught adults displayed deep fissures, reduced cadherins, and absence of dsc1 in the fissuring zone. These results suggest that shedding of skin layers in mammals, whether normal molting, pathological, or the result of injury and wound repair all revolve around desmosome function. The specific role, structure, and location of these two cadherins need to be further addressed.
Identifier
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<a href="http://doi.org/10.1002/ar.24338" target="_blank" rel="noreferrer noopener">10.1002/ar.24338</a>
PMID: 31854140
Format
The file format, physical medium, or dimensions of the resource
Journal Article
2019
Anatomical Record (Hoboken
Anatomical Record (Hoboken, N.J.: 2007)
Department of Anatomy & Neurobiology
desmosomes
ear plug
external acoustic meatus
George John Craig
January 2020 Update
Journal Article
McBurney Denise L
N.J.: 2007)
NEOMED College of Medicine
Rehorek Susan J
Stimmelmayr Raphaela
Suydam Robert
Thewissen J G M