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Frog Musculature
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Axial Musculature
Head Muscles
OriginInsertionAction
TemporalisMid-dorsal linePosterior region of the mandibleRaises the lower jaw
Depressor MandibulaeMid-dorsal lineAngle of the jawLowers the jaw
MylohoidMedian rapheInner surface of the lower jawRaises the floor of the mouth
Trunk Muscles
OriginInsertionAction
CoccygeosacralisAnterior lateral surface of the urostyleNeural arch and transverse process of sacral vertebraKeeps coccyx in line with ilium
CoccygeoiliacusPosterior lateral surface of urostyleIlium Supports articulation of coccyx with the ilium
Longissimus dorsiUrostyle Posterior end of the skull, dorsal surface of the vertebraeExtends back and elevates head
External obliqueLumbo-dorsal fasciaBeneath the muscle on the ventral side of the abdomenCompresses the abdomen
Rectus abdominisPubisSternum Flexes the vertebral column
Linea albaLumbo-dorsal fascia, ribsPubis Compresses the abdomen
Inscriptiones tendinaeCompresses the abdomen
Appendicular Musculature
Muscles of the forelimb
OriginInsertionAction
Latissimus dorsiFascia of the anterior trunk regionShoulder joint, humerusDraws arm away from the body
Sterno-radialisEpisternum Proximal end of the radioulnaDraws the arms towards the chest
Pectoralis(2) Pectoral girdle, sternum(1) Fascia of the rectus abdominusHumerus Draws the arms towards the chest
DeltoidCoracoidProximal end of the humerusDraws the arms towards the chest
Triceps brachiiScapulo-coracoidDistal end of the humerus, proximal end of the radioulnaStraightens the forearms
Muscles of the hindlimb
OriginInsertionAction
Triceps extensor femorisPosterior border of the ilium, anterior border of the acetabulumProximal end of the tibio-fibulaStraightens the shanks, bends the thigh
SemimembranosusIschium Proximal end of the tibio-fibula, back of the knee Draws the thigh medially and bends the shanks
Biceps femorisPosterior margin of ischiumProximal end of tibio-fibulaDraws the thigh medially and bends the shanks
Gracilis majorPosterior margin of the ischiumProximal end of the tibio-fibulaDraws the thigh medially
SartoriusLower end of the iliumBends the leg
Adductor magnusPelvic girdleDistal end of femurAdducts thigh and draws thigh ventrally
Gastrocnemius Small headtop aponeuroses that covers the knee; Big headglistening tendon at the back of the knee connected to the ligament binding the femur and the tibio-fibulaAchilles tendonFlexes leg and extends foot
PeroneusDistal end of the femurDistal end of the tibio-fibula, proximal end of the tarsal bonesStraightens the shank, bends the foot
Tibialis anticusDistal end of the femurTarsals Bends the foot
Tibialis posticusEntire length of the tibio-fibulaProximal end of the tarsalsExtends the foot
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