<?xml version="1.0" encoding="UTF-8"?> <rdf:RDF xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns:obo_purl="http://purl.obolibrary.org/obo/" xmlns:owl="http://www.w3.org/2002/07/owl#" xmlns:rdfs="http://www.w3.org/2000/01/rdf-schema#" xmlns:skos="http://www.w3.org/2004/02/skos/core#" xmlns:oboinowl_gen="http://www.geneontology.org/formats/oboInOwl#" xmlns:foaf="http://xmlns.com/foaf/0.1/" xmlns:metadata_def="http://data.bioontology.org/metadata/def/" xmlns:ns1="http://data.bioontology.org/rest_backup_mappings/" xmlns:metadata="http://data.bioontology.org/metadata/"> <owl:Class rdf:about="http://purl.obolibrary.org/obo/UBERON_0000948"> <rdfs:subClassOf rdf:resource="http://purl.obolibrary.org/obo/UBERON_0000061"/> <rdfs:label>heart</rdfs:label> <rdfs:comment>Taxon notes:" the ascidian tube-like heart lacks chambers....The ascidian heart is formed after metamorphosis as a simple tube-like structure with a single-layered myoepithelium that is continuous with a single-layered pericar- dial wall. It lacks chambers and endocardium.... The innovation of the chambered heart was a key event in vertebrate evolution, because the chambered heart generates one-way blood flow with high pressure, a critical requirement for the efficient blood supply of large-body vertebrates... all extant vertebrates have hearts with two or more chambers (Moorman and Christoffels 2003)" DOI:10.1101/gad.1485706</rdfs:comment> <skos:notation>UBERON:0000948</skos:notation> <obo_purl:IAO_0000115>A myogenic muscular circulatory organ found in the vertebrate cardiovascular system composed of chambers of cardiac muscle. 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<oboinowl_gen:hasDbXref>galen:Heart</oboinowl_gen:hasDbXref> <oboinowl_gen:hasDbXref>UMLS:C0018787</oboinowl_gen:hasDbXref> <oboinowl_gen:hasOBONamespace>uberon</oboinowl_gen:hasOBONamespace> <oboinowl_gen:id>UBERON:0000948</oboinowl_gen:id> <oboinowl_gen:inSubset rdf:resource="http://purl.obolibrary.org/obo/uberon/core#human_subset"/> <oboinowl_gen:inSubset rdf:resource="http://purl.obolibrary.org/obo/uberon/core#mouse_subset"/> <oboinowl_gen:inSubset rdf:resource="http://purl.obolibrary.org/obo/uberon/core#major_organ"/> <oboinowl_gen:inSubset rdf:resource="http://purl.obolibrary.org/obo/uberon/core#organ_slim"/> <oboinowl_gen:inSubset rdf:resource="http://purl.obolibrary.org/obo/uberon/core#pheno_slim"/> <oboinowl_gen:inSubset rdf:resource="http://purl.obolibrary.org/obo/uberon/core#efo_slim"/> <oboinowl_gen:inSubset rdf:resource="http://purl.obolibrary.org/obo/uberon/core#human_reference_atlas"/> <oboinowl_gen:inSubset 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    <rdfs:comment>Taxon notes:" the ascidian tube-like heart lacks chambers....The ascidian heart is formed after metamorphosis as a simple tube-like structure with a single-layered myoepithelium that is continuous with a single-layered pericar- dial wall. It lacks chambers and endocardium.... The innovation of the chambered heart was a key event in vertebrate evolution, because the chambered heart generates one-way blood flow with high pressure, a critical requirement for the efficient blood supply of large-body vertebrates... all extant vertebrates have hearts with two or more chambers (Moorman and Christoffels 2003)" DOI:10.1101/gad.1485706</rdfs:comment>
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    <obo_purl:IAO_0000115>A myogenic muscular circulatory organ found in the vertebrate cardiovascular system composed of chambers of cardiac muscle. It is the primary circulatory organ.</obo_purl:IAO_0000115>
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