Muscles Flashcards
what is the innervation, action, origin, and insertion
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Name muscle, origin, insertion, action, innervation
Sartorius
Origin - ASIS
Insertion - Medial surface of body of tibia
Action - weakly flexes leg at knee joint, flexes abducts, and laterally rotates thigh at hip joint
Innervation - Femoral nerve
Origin, insertion, action, innervation
Rectus Femoris
Origin - ASIS
Insertion - patella via quadriceps tendon and then tibial tuberosity via patellar ligament
Action - extend leg at knee joint.
innervation - femoral nerve
Origin, insertion, action, innervation
Vastus lateralis
Origin - Greater trochanter and linea aspera of femur
Insertion - patella via quads tendon and then tibial tuberosity
Action - Extend leg at knee joint
Innervation - Femoral nerve
Origin, insertion, action, innervation
Vastus Intermedius
Origin - Anterior and lateral surfaces of body of femur
Insertion - Patella and then tibial tuberosity
Action - Extend leg at knee joint
Innervation - Femoral nerve
Origin, insertion, action, innervation
Vastus Medialis
Origin - Linea aspera of femur
Insertion - Patella then tibial tuberosity
Action - extend leg at knee joint
Innervation - femoral nerve
Origin, insertion, action, innervation
Biceps Femoris
Origin - Long head, ischial tuberosity short head, linea aspera of femur
Insertion - Head of fibula and lateral condyle of tibia
Action - flexes leg at knee joint and extends thigh at hip joint
Innervation - Sciatic nerve
Origin, insertion, action, innervation
Semimembranosus
origin - ischial tuberosity
Insertion - Medial condyle of tibia
Action - flexes leg at knee joint and extends thigh at hip joint
Innervation - sciatic nerve
Origin, insertion, action, innervation
Semitendinosus
Origin - ischial tuberosity
Insertion - Prosimal part of medial surface of shaft of tibia
Action - Flexes leg at knee joint and extends thigh at hip joint
Innervation - Tibial nerve from sciatic nerve
Origin, insertion, action, innervation
Gastrocnemius
Origin - Lateral and medial condyles of femur and capsule of knee
Insertion - calcaneus
Action - plantar flexes foot at ankle joint and flexes leg at knee joint
Innervation - tibial nerve
Origin, insertion, action, innervation
Plantaris
Origin - lateral epicondyle of femur
Insertion - calcaneus
Action - plantar flexes foot at ankle joint and flexes leg at knee joint
Innervation - tibial nerve
Origin, insertion, action, innervation
Soleus
Origin - -Head of fibula and medial border of tibia
Insertion - calcaneus
Action - Plantar flexes foot at ankle joint
Innervation - tibial nerve
Origin, insertion, action, innervation
Tibialis Posterior
Origin - Prosimal tibia, fibula, and interosseous membrane
Insertion - 2, 3, and 4th metatarsals, navicular, and all three cuneiforms
Action - Plantar flexes foot at ankle joint and inverts foot at intertarsal joints
innervation - tibial nerve
Origin, insertion, action, innervation
Flexor digitorum longus
Origin - middle third of posterior surface of tibia
Insertion - distal phalanges of toes 2-5
Action - plantar flexes foot at ankle, flexes distal and middle proximal phalanx of toes .
innervation - tibial nerve
Origin, insertion, action, innervation
Flexor Hallucis Longus
Origin - Inferior two-thirds of posterior portion of fibula
Insertion - distal phalanx of great toe
Action - Plantar flexes foot at ankle, flexes distal phalanx of great to and proximal phalanx of great toe
innervation - tibial nerve
Origin, insertion, action, innervation
Fibularis Longus
Origin - head and body of fibula
Insertion - first metatarsal and first cuneiform
action - plantar flexes foot at ankle and pronates foot at intertarsal joints
innervation - superficial fibular nerve
Origin, insertion, action, innervation
Fibularis brevis
Origin - Distal half of body of fibula
Insertion - Base of fifth metatarsal
action - plantar flexes foot at ankle and pronates foot
innervation - superficial fibular nerve
Origin, insertion, action, innervation
Tibialis anterior
Origin - Lateral condyle and body of tibia, interosseous membrane
Insertion - 1st metatarsal and 1st cuneiform
Action - dorsiflexes foot at ankle and supinates foot
Innervation - deep fibular nerve
Origin, insertion, action, innervation
Extensor Hallucis Longus
Origin - Anterior surface of fibula and interosseous membrane
Insertion - Distal phalanx of great toe
Action - dorsiflexes foot at ankle, extends prosimal phalanx of great toe
Innervation - deep fibular nerve
Origin, insertion, action, innervation
Extensor Digitorum Longus
Origin - Lateral condyle of tibia, anterior surface of fibula
Insertion - middle and distal phalanges of toes 2-5
Action - Dorsiflexes foot, extends phalanges of each to.
Innervation - Deep fibular nerve
Origin, insertion, action, innervation
Fibularis Tertius
Origin - Distal third of fibula and interosseous membrane
Insertion - Base of fifth metatarsal
Action - dorsiflexes foot at ankle, and pronates foot
Innervation - Deep fibular nerve
