Shark Muscles Flashcards
adductor mandibulae
O: caudal region and adductor mandibulae process of palatoquadrate cartilage
I: posterolateral portion of mandibular cartilage
A: adducts (closes) jaws
levator palatoquadrati
O: lateral portion of otic capsule
I: posterodorsal portion of palatoquadrate cartilage
A: raises palatoquadrate cartilage
spiracular
O: lateral portion of otic capsule
I: palatoquadrate cartilage
A: closes spiracle
preorbital
O: caudal end of palatoquadrate cartilage
I: ventral surface of base of rostrum
A: retracts chondrocranium during jaw closure
intermandibular
O: medial edge of mandibular cartilage
I: midventral raphe
A: pulls mandibular cartilage toward midline, raises floor of oropharyngeal cavity
interhyoid
O: ceratohyal cartilage
I: midventral raphe
A: pulls ceratohyal toward midline, raises floor of oropharyngeal cavity
dorsal hyoid constrictor
O: surface of cucullaris
I: tendinous plate
A: compresses gill pouch
ventral hyoid constrictor
O: fascia caudomedial to interhyoid
I: tendinous plate
A: compresses gill pouch
hyoid trematic constrictor
O: tendinous plate
I: edge of gill slit I
A: closes gill slit and compresses gill pouch I
levator hyomandibulae
O: surface of epibranchial musculature and otic capsule
I: hyomandibular and palatoquadrate cartilages
A: raises hyomandibular cartilage and expands gill pouches
cucullaris
O: surface of epibranchial musculature
I: scapulocoracoid cartilage and epibranchial cartilage of branchial arch V
A: compresses anterior cardinal sinus, elevates gill arches and pectoral girdle
dorsal superficial branchial constrictor
O: vertical raphe
I: vertical raphe
A: compresses gill pouches
ventral superficial branchial constrictor
O: vertical raphe
I: vertical raphe
A: compresses gill pouches
coracomandibular
O: caudal surface of coracoarcuals
I: symphysis of mandibular cartilages
A: opens mouth
coracoarcual
O: coracoid bar of scapulocoracoid cartilage
I: coracohyoid
A: opens mouth
