Biology 351
Squalus Muscular System
A = myosepta B = myomeres C = Horizontal skeletogenous septum D = epaxial E = hypaxial
Picture reference
A = myosepta B = myomeres C = Horizontal skeletogenous septum D = epaxial E = hypaxial
Epibranchial and Hypobranchial muscles.
Cranial extension of epaxial
Cranial extension of hypaxial
Coracomandibular
Coracoarcuals
Coracohyoids
Branchiomeric muscles.
Adductor mandibulae
Intermandibular muscle
Interhyoid muscle
Ventral hyoid constrictor
Levator hyomandibulae
cucullaris
Appendicular muscles: pectoral fin.
Cranial fin muscle
Ventral fin muscle
Dorsal fin muscle
Muscles of the Trunk and Tail.
Myomeres
Myosepta
Horizontal skeletogenous septum
Epaxial
Hypaxial
External anatomy
Spine on the clasper.
External anatomy
Shark must contract this muscle to ABduct its fin.
Shark must contract this muscle to ADduct its fin.
Shark must contract this muscle to ABduct its fin.
A = Intermandibular (entire superficial layer) B= Coracoarcuals
A = Coracomandibular B = Coracohyoid C = Intermandibular D = Coracoarcuals E = Interhyoid (inner layer below intermandibular)
A = Intermandibular (entire superficial layer) B= Coracoarcuals
External anatomy.
Male
Female
Overview