Uber Anatomy Ontology

Last uploaded: May 13, 2024
Preferred Name

jaw depressor muscle

Synonyms

depressor gnathalis

geniothoracis

protractor hyoidei

geniohyoideus muscle

coracomandibularis

branchiomandibularis

protractor hyoideus

geniohyoideus

Definitions

A muscle whose action is to depress the lower jaw.

ID

http://purl.obolibrary.org/obo/UBERON_0011151

external_comment

Source: Winterbottom, R. 1973. A Descriptive Synonymy of the Striated Muscles of the Teleostei. Proceedings of the Academy of Natural Sciences of Philadelphia, Vol. 125 (1973), pp. 225-317.[TAO]

axiom_lost_from_external_ontology

relationship loss: subclass hyobranchial muscles (AAO:0000224)[AAO]

database_cross_reference

TAO:0000612

XAO:0004127

AAO:0010655

definition

A muscle whose action is to depress the lower jaw.

external_definition

Muscle that pulls the hyoid apparatus forward and depresses the lower jaw.[AAO]

Muscle located on ventral side of the head, linking the ventral hyoid arch to the dentary. Innervated by ramus mandibularis V and ramus hyoides VII.[TAO]

has_narrow_synonym

depressor gnathalis

geniothoracis

protractor hyoidei

geniohyoideus muscle

coracomandibularis

branchiomandibularis

protractor hyoideus

geniohyoideus

has_obo_namespace

uberon

id

UBERON:0011151

label

jaw depressor muscle

notation

UBERON:0011151

prefLabel

jaw depressor muscle

taxon_notes

In amphibians, 'Muscle that pulls the hyoid apparatus forward and depresses the lower jaw.' [AAO:0010655]. 'The protractor hyoideus muscle in teleosts is commonly, albeit mistakenly, referred to as the geniohyoideus muscle, which is involved in the coracomandibularis coupling. According to Edgeworth (1935) and Winterbottom (1974), the protractor hyoideus is composed of a fusion of the intermandibularis posterior and the interhyoideus muscles which resulted in the protractor hyoideus which spans the hyoid and mandible. The intermandibularis spans the mandible while the closely apposed interhyoideus spans the hyoid in other fishes. Furthermore, they concluded that any muscle that is homologous to the geniohyoideus (coracomandibularis coupling) in other lower vertebrates has been lost in teleosts, as well as gars. However, the protractor hyoideus muscle is functionally analogous to the coracomandibularis coupling of other vertebrates and so we use it in our discussion to show the phylogenetically broad roles of these couplings in jaw mechanics.'

subClassOf

http://purl.obolibrary.org/obo/UBERON_0005493

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