Frog Origin, Insertion, and Function Flashcards by Jacob Dickman

Pectoralis Major

Origin: Coracoid, Sternum, and fascia of the rectus abdominis
Insertion: Humerus
Function: adducts, rotates, and flexes the limb

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Cutaneous Pectoralis

Origin: Pectoralis Muscle
Insertion: Skin
Function: may compress lymph spaces

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Rectus abdominus

Origin: pubis
Insertion: dorsal surface of episternum
Function: Flexes the trunk

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External Oblique

Origin: transverse Process of Vertebrae
Insertion: Connective tissue of rectus abdominus
Function: compresses the viscera

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Latissimus Dorsi

Origin: dorsal connective tissue sheath
Insertion: Humerus
Function: retracts the forelimb

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Transversus abdominus

Origin: Transverse processes of vertebrae
Insertion: connective tissue of rectus abdominis
Function: compresses the viscera

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Dorsalis Scapulae

Origin: suprascapula
Insertion: Humerus
Function: protracts the forelimb

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Longissimus Dorsi

Origin:Urostyle
Insertion: posterior portion of the skull and anterior vertebrae
Function: Extends the pelvic area

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Iliolumbaris

Origin: Urostyle
Insertion: posterior portion of the skull
Function: Synergistic with Longissimus dorsi, extending the pelvic area

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Coccygeoiliacus

Origin: urostyle
Insertion: ilium
Function: Stabilization of the urostyle and extension of the pelvic area

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Depressor Mandibularis

Origin: Squamosal
Insertion: posterior portion of the angulosplenial
Function: depresses mandible

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Temporalis

Origin: frontoparietal
Insertion: coronoid process of mandible
Function: elevates the mandible

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Masseter

Origin: frontoparietal
Insertion: coronoid process of mandible
Function: elevates the mandible

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Mylohyoid

Origin: Mandible
Insertion: Median raphe
Function: elevates the throat

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Geniohyoid

Origin: mandibular symphysis
Insertion: hyoid
Function: depresses mandible and pulls the hyoid apparatus anteriorly

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Deltoid

Origin: sternum, clavicle, scapula
Insertion: Humerus
Function: protraction and adduction of the forearm

Triceps Brachii

Origin: humerus, scapula
Insertion: Ulna
Function: extends the forearm

Adductor Magnus

Origin: pelvic girdle
Insertion: Femur
Function: adducts thigh

Gracilis major

Origin: Pelvis
Insertion: proximal end of the tibiofibula
Function: Flexes lower limb and retracts and adducts the thigh

Gracilis minor

Origin: Pelvis
Insertion: proximal end of the tibiofibula
Function: Flexes lower limb and retracts and adducts the thigh

Semimembranosus

Origin: pelvic girdle
Insertion: proximal end of tibiofibula
Function: Extends the lower limb and assists in protraction and adduction of the thigh

Extensor cruris brevis

Origin: femur
Insertion: tibiofibula
Function: extends lower hindlimb

Tibialis anterior longus

Origin: femur
Insertion: tarsals
Function: dorsiflexion of the foot and assists in lower hindlimb extension

Tibialis posterior

Origin: shaft of tibiofibula
Insertion: tibiale
Function: foot extension

Gastrocnemius

Origin: femur Insertion: plantar aponeurosis by way of the achilles tendon Function: extends the foot and flexes toes

Sartorius

Origin: Pelvic girdle Insertion: proximal end of the tibiofibula Function: flexes the lower hindlimb, adducts and protracts the thigh

Adductor longus

Origin: pelvic girdle Insertion: femur Function: adducts the thigh

Triceps femoris

Origin: illium, acetabulum Insertion: tibiofibula Function: Extends the lower limb and assists in protraction of the thigh

piriformis

Origin: urostyle insertion: femur Function: retracts thigh

pterygoideus

origin: frontoparietal Insertion: coronoid process Function: elevates the mandible

interhyoideus

Origin: fascia of the depressor mandibulae Insertion: median raphe Function: elevates the throat

submentalis

Origin: Mandible Insertion: mandible Function: assists in elevation of the throat

Branchiohyoideus

Origin: mandible Insertion: hyoid Function: protracts the mandible

genioglossus

Origin: mandible Insertion: tongue Function: tongue movement

Sternohyoideus

Origin: Sternum Insertion: hyoid Function: retraction of the hyoid

Omohyoideus

Origin: dorsal surface of the coracoid Insertion: hyoid Function: movement of the hyoid

Pectinius

Origin: pelvic girdle Insertion: proximal end of the femur Function: adducts the thigh

Semitendonosus

Origin: pelvic girdle Insertion: proximal end of the tibiofibula Function: flexes the lower hindlimb and retracts the thigh

Peroneus

Origin: distal end of the femur Insertion: proximal tarsals Function: flexes the foot