digit - Ontology Report - Rat Genome Database

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The Basic subset of the UBERON integrated, cross-species anatomy ontology is downloaded weekly from http://berkeleybop.org/ontologies/uberon/basic.obo. For more information about this ontology see the "About" page on the UBERON website at http://uberon.github.io/about.html.

Term:	digit	go back to main search page
Accession:	UBERON:0002544	browse the term
Definition:	A subdivision of the autopod that has as part a series of phalanges together with associated vasculature, musculature, integument and nerves. It is continuous with the metapodial subdivision of the autopod, but does not include the metapodials. In species such as humans, fully formed digits are distinct, whereas in other species the digits may be connected by interdigital webbing, or may be completely unseparated (for example, in cetaceans).
Comment:	[homology-note] "Our reinterpretation of the distal fin endoskeleton of Panderichthys removes the final piece of evidence supporting the formerly popular hypothesis that tetrapod digits are wholly new structures without homologues in sarcopterygian fish fins. This hypothesis, which was based partly on the complete absence of plausible digit homologues in Panderichthys (then the closest known relative of tetrapods), has already been called into question by the discovery of digit-like radials in Tiktaalik and the fact that Hox gene expression patterns closely resembling those associated with digit formation in tetrapods occur in the distal fin skeletons of paddlefish and Australian lungfish. Our new data show that Panderichthys is not an anomaly: like Tiktaalik and other fish members of the Tetrapodomorpha, it has distal radials that can be interpreted as digit homologues.[well established][VHOG]" xsd:string {date_retrieved="2012-09-17", external_class="VHOG:0000944", ontology="VHOG", source="DOI:10.1038/nature07339 Boisvert CA, Mark-Kurik E and Ahlberg PE, The pectoral fin of Panderichthys and the origin of digits. Nature (2008)", source="http://bgee.unil.ch/"}
Synonyms:	exact_synonym:	acropodial unit; digit (phalangeal portion) plus soft tissue; limb digit
	xref:	AAO:0011126; EFO:0000881; EMAPA:32725; FMA:85518; MA:0000690; MAT:0000285; MIAA:0000285; NCI:C40186; SCTID:361367007; UMLS:C0582802; VHOG:0000944; Wikipedia:Digit_(anatomy); XAO:0003032; galen:Digit
	relational_adjective:	digital
	cyclic_relationship:	mutually_spatially_disjoint_with mutually_spatially_disjoint_with UBERON:0009877

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Term paths to the root

Path 1
Term	Annotations
UBERON ontology	0
anatomical entity	0
material anatomical entity	0
anatomical structure	0
multicellular anatomical structure	0
organism subdivision	0
autopodial extension	0
digit	0
digit 1 or 5 +	0
digit 2, 3 or 4 +	0
digit 6 +	0
digit 7 +	0
digit 8 +	0
digit connective tissue +	0
digit mesenchyme +	0
digit skin +	0
digital artery +	0
distal segment of digit +	0
epidermal ridge of digit	0
interphalangeal joint +	0
manual digit +	0
metacarpal/tarsal-phalangeal joint	0
pedal digit +	0
phalanx endochondral element +	0
subarticular sesamoid	0
toe disc +	0
webbed digit +	0
Path 2
Term	Annotations
UBERON ontology	0
anatomical entity	0
material anatomical entity	0
anatomical structure	0
multicellular anatomical structure	0
multicellular organism	0
embryo	0
embryonic structure	0
presumptive structure	0
paired limb/fin bud	0
paired limb/fin	0
limb	0
limb segment	0
autopod region	0
segment of autopod	0
digitopodium region	0
digit plus metapodial segment	0
digit	0
digit 1 or 5 +	0
digit 2, 3 or 4 +	0
digit 6 +	0
digit 7 +	0
digit 8 +	0
digit connective tissue +	0
digit mesenchyme +	0
digit skin +	0
digital artery +	0
distal segment of digit +	0
epidermal ridge of digit	0
interphalangeal joint +	0
manual digit +	0
metacarpal/tarsal-phalangeal joint	0
pedal digit +	0
phalanx endochondral element +	0
subarticular sesamoid	0
toe disc +	0
webbed digit +	0

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CROSS-SPECIES ANATOMY - ANNOTATIONS