KIn 312 - Quiz 9

Gastrocnemius m.

Action: Flexion of the leg at the tibiofemoral j.; Plantar flexion of the foot at the talocrural j.

Proximal: Superior posterior surfaces of lateral and medial condyles of the femur b.

Distal: Calcaneus b. via tendon

Soleus m.

Action: Plantar flexion of the foot at the talocrural j.

Proximal: Head and proximal shaft of the fibula b.; medial border of tibia b.

Distal: Calcaneus b. via tendon

Plantaris m.

Action: Weakly flexes the lef at the tibiofemoral j. ; Weak plantar flexion of the foot at the talocrural j.

Proximal: Lateral supracondylar ridge of the femur b.

Distal: Posterior region of calcaneus b.

Tibialis Posterior m.

Action: Plantar flexion of the foot at the talocrural j.

Proximal: Fibula b. tibia b., and interosseous membrane

Distal: Metatarsals 2-4; navicular b.; cuboid b.; all cuneiforms b.

Tibialis anterior m

Action: Dorsiflexion and inversion of the foot at the talocrural j.

Proximal: lateral condyle and proximal shaft of the tibia b.; interosseous membrane

Distal: Metatarsal 1 and medial cuneiform b.

Fibularis Longus m.

Action: Eversion and weak plantar flexion of the foot at the talocrural j.

Proximal: head of the fibula b.; lateral condyle of the tibia b.

Distal: Base of metatarsal 1; medial cuneiform b.

Fibularis Brevis m.

Action: Eversion and weak plantar flexion of the foot at the talocrural j.

Proximal: Midlateral shaft of the fibula b.

Distal: Base of metatarsal 5

Fibularis Tertius m.

Action: Dorsiflexion and weak eversion of the foot at the talocrural j.

Proximal: Anterior surface of fibula b. ; interosseous membrane

Distal: Distal phalanx of toe 5

Extensor Digitorum Longus m.

Action: Extension of toes 2-5 at the PIP and DIP joints; Dorsiflexion of the foot at the talocrural j.

Proximal: Lateral condyle of the tibia b.; Anterior surface of the fibula b.; interosseous membrane

Distal: Distal phalanges of toes 2-5

Extensor digitorum brevis m.

Action: Extension of the MP, PIP, and DIP joints of toes 2-5

Proximal: Calcaneus b. and inferior extensor retinaculum

Distal: Middle Phalanges of toes 2-4

Extensor Hallucis Longus.

Action: Extension of the toe 1 at the MP joint; dorsiflexion of the foot at the talocrural j.

Proximal: Anterior surface of the fibula b.; interosseous membrane

Distal: Distal phalanx of toe 1

Extensor Hallucis Brevis m.

Action: Extension of the MP joint of toe 1

Proximal: Calcaneus and inferior extensor retinaculum

Distal: Proximal phalanx of great toe 1

Flexor Digitorum longus m.

Action: Plantar flexion of the foot at the talocrural j.; Flexion of the MP, PIP, and DIP joints of toes 2-5

Proximal: Posteromedial surface of the tibia b.

Distal: Distal phalanges of toes 2-5

Flexor digitorum brevis m.

Action: Flexion of the MP and PIP joints of toes 2-5

Proximal: Calcaneus b.

Distal: Middle phalanges f toes 2-5

Flexor Hallucis longus m.

Action: Plantar flexion of the foot at the talocrural j.; Flexion of the MP, PIP, and the DIP joints of toe 1

Proximal: Posterior inferior two-thirds of the fibula b.

Distal: Distal phalanx of toe 1

Flexor hallucis brevis m.

Action: Flexion of the MP joint of toe 1

Proximal: Cuboid b.; lateral 3rd cuneiform b.

Distal: Proximal phalanx of toe 1

Lumbricals m.

Action: Flexion of the MP joints of toes 2-5; Extension of the PIP and DIP joints of toes 2-5

Proximal: Tendons od flexor digitorum longus m.

Distal: tendons of extensor digitorum longus m.

Plantar Interossei m.

Action: Adduction of the toes at the PIP joints

Proximal: Sides of metatarsals 3-5

Distal: Medial side of proximal phalanges of toes 3-5

Dorsal Interossei m.

Action: Abduction of the toes at the PIP joints

Proximal: Adjacent sides of metatarsals

Distal: Sides of proximal phalanges of toes 2-4

Quadratus Plantae m.

Action: Pulls flexor digitorum longus tendons to flex toes 2-5

Proximal: Calcaneus b.; long plantar l.

Distal: tendons of flexor digitorum longus m.

Abductor Hallucis m.

Action: Abduction of toe 1 at the PIP joint

Proximal: Calcaneus b.

Distal: Medial side of proximal phalanx of toe 1

Abductor Digiti minimi m.

Action: adduction of toe 5 at the PIP joint

Proximal: Calcaneus b.

Distal: Lateral side of proximal phalanx of little toe 5

Flexor Digiti minimi brevis m.

Action: Flexion of the MP joint of little toe 5

Proximal: Metatarsal 5

Distal: Proximal phalanx of little toe 5

Gemellus Superiorn m.

Lateral rotation of the thigh at the coxal j.

Proximal: ishium

Distal: greater trochanter if femur

Gemellus inferior m.

Lateral rotation of the thigh at the coxal j.

Proximal: ishium tuberosity

Distal: greater trochanter of femur b.

Obturator Externus m.

Lateral rotation of thigh at the coxal j.

Orgin: pubis and ishium

Distal: greater trochanter femur b.

Obturator internus m.

Lateral rotation of thigh coxal j.

Orgin: pubis and ishium

Insertion: greater trochanter of femur b.

Quadratus femoris m.

Lateral rotaion of the thigh at the coxal j.

Orgin: ishial tuberosity

Insertion: intertrochanteric crest of femur b.