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Necturus Musculature
Origin Insertion and Function
33
Anatomy
03/21/2011

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Cards

Term
Definition
Pectoralis

origin: linea alba and coracoid cartilage

insertion: humerus

function: adducts forelimb
Term
Definition
Procoracohumeralis

origin: procoracoid cartilage

insertion: humerus

function: draws humerus craniad
Term
Definition
supracoracoideus

origin: coracoid cartilage

insertion: humerus

function: adducts forelimb
Term
Definition
Branchiohyoideus

origin: first branchial arch

insertion: ceratohyal cartilage

function: moves arches and hyoid

Term
Definition
geniohyoid

origin: medial mandible

insertion: second basibranchial cartilage

function: depresses lower jaw and draws hyoid cranially

Term
Definition
interhyoideus

origin: fascia covering branchiohyoideus

insertion: medial raphe

function: elevates floor of throat
Term
Definition
intermandibularis

origin: rami of mandible

insertion: median raphe

function: elevates floor of throat
Term
Definition
rectus cervicis

origin: rectus abdominus

insertion: branchial cartilages

function: retracts tongue and lowers head
Term
Definition
coracobrachialis

origin: coracoid cartilage

insertion: humerus

function: adducts forelimb
Term
Definition
humeroantebrachialis

origin: humerus

insertion: radius

function: flexes forearm

Term
Definition
triceps brachii

origin: glenoid fossa, humerus, coracoid cartilage

insertion: ulna

function: extends forearm

Term
Definition
depressor mandibulae

origin: 3rd branchial arch

insertion: posterior end of mandible

function: depresses lower jaw
Term
Definition
levator mandibulae anterior

origin: frontal and parietal bones

insertion: lateral dentary

function: elevates lower jaw
Term
Definition
levator mandibulae externus

origin: frontal and parietal bones

insertion: lateral dentary

function: elevates lower jaw

Term
Definition
levatores arcuum

origin: fascia of epibranchial muscles

insertion: epibranchial cartilages

function: elevates external gills
Term
Definition
cucullaris

origin: fascia of epibranchial muscles

insertion: scapula

function: elevates pectoral girdle
Term
Definition
dorsalis scapulae

origin: suprascapular cartilage

insertion: humerus

function: elevates forelimb
Term
Definition
latissimus dorsi

origin: fascia of epibranchial muscles

insertion: shoulder and proximal end of humers

function: draws humerus caudad

Term
Definition
pectoriscapularis

origin: epribranchial cartilage

insertion: scapula and procoracoid cartilage

function: draw shoulder and forelimb craniad
Term
Definition
dorsalis truncii

origin: myosepta and transverse processes of vertebrae

insertion: myospeta and transverse processes of vertebrae

function: flexes vertebral column laterally
Term
Definition
external oblique

origin: transverse processes of trunk vertebrae

insertion: connective tissue of rectus abdominis

function: compress coelom, flexes and rotates the trunk

Term
Definition
iliotibialis

origin: ilium

insertion: tibia

function: abducts hindlimb

Term
Definition
puboischiofemoralis externus

origin: puboischiac plate

insertion: femur

function: adducts hindlimb

Term
Definition
puboischiofemoralis internus

origin: internal surface of puboischiac plate

insertion: femur

function: draws femur craniad
Term
Definition
puboischiotibialis

origin: posterior puboischiac plate

insertion: tibia

function: adducts hindlimb
Term
Definition
pubotibialis

origin: anterior puboischiac plate

insertion: tibia

function: adducts hindlimb
Term
subarcual
Definition
origin: gill cartilage

insertion: gill cartilage

function: depresses gills
Term
dilator laryngis
Definition
origin: fascia near dorsal midline

insertion: lateral cartilages of larynx

function: dilates larynx
Term
rectus abdominus
Definition
origin: anterior margin of pubic cartilage

insertion: transverse inscription

function: flexes trunk ventrally

Term
caudocruralis
Definition
origin: posterior border of puboischiotibialis

insertion: haemel arches of caudal vertebrae 3-6

function: flexes tail

Term
caudofemoralis
Definition
origin: haemal arches of caudal vertebrae 3-6

insertion: femur

function: flexes tail and draws hindlimb caudad

Term
ilioextensorius
Definition
origin: ilium

insertion: tibial and fascia covering the knee

functon: extends shank
Term
ischiocaudalis
Definition
origin: ischium

insertion: haemal arches of caudal vertebrae 3-6

function: flexes tail