Anatomy of Muscles for PTA: O, I, A, N Flashcards

Terms Definitions
Tibialis Anterior Origin
Lateral tibia and interosseous membrane
Tibialis Anterior Insertion
First cuneiform and metatarsal
Tibialis Anterior Actions
Dorsiflexion and Inversion of foot
Tibialis Anterior Nerve Innervation
Deep Peroneal Nerve (L4, L5, S1)
Peroneus (fibularis) longus Origin
Lateral proximal fibula and interosseous membrane
Peroneus (fibularis) longus Insertion
Plantar surface of first cuniform and metatarsal
Peroneus (fibularis) longus Actions
Eversion and plantar flexion
Peroneus (fibularis) longus Nerve Innervation
Superficial Peroneal Nerve (L4, L5, S1)
Peroneus (fibularis) brevis Origin
Lateral distal fibula
Peroneus (fibularis) brevis Insertion
Base 5th metatarsal
Peroneus (fibularis) brevis Actions
Eversion and plantar flexion
Peroneus (fibularis) brevis Nerve Innervation
Superficial Peroneal Nerve (L4, L5, S1)
Biceps Femoris* (Hamstrings) long head Origin
Ischial tuberosity
Biceps Femoris* (Hamstrings) long head Insertion
Fibular head
Biceps Femoris* (Hamstrings) long head Actions
Hip extension, knee flexion
Biceps Femoris* (Hamstrings) long head Nerve Innervation
Sciatic nerve (S1-S3)
Biceps Femoris* (Hamstrings) short head Origin
Lateral lip linea aspera
Biceps Femoris* (Hamstrings) short head Insertion
Fibular head
Biceps Femoris* (Hamstrings) short head Action
Knee flexion
Biceps Femoris* (Hamstrings) short head Nerve Innervation
Common Peroneal (L5-S2)
Semitendinosus* (Hamstrings) Origin
Ischial tuberosity
Semitendinosus* (Hamstrings) Insertion
Pes Anserine tendon - Anteromedial proximal surface of tibia
Semitendinosus* (Hamstrings) Actions
Hip extention, knee flexion
Semitendinosus* (Hamstrings) Nerve Innervation
Sciatic (L5-S2)
Semimembranosus* (Hamstrings) Origin
Ischial tuberosity
Semimembranosus* (Hamstrings) Insertion
Posterior of medial condyle of tibia
Semimembranosus* (Hamstrings) Actions
Hip extension, knee flexion
Semimembranosus* (Hamstrings) Nerve Innervation
Sciatic (L5-S2)
Quadratus Femoris Origin
Ischial tuberosity
Quadratus Femoris Insertion
Intertrochanteric crest of femur
Quadratus Femoris Action
Lateral rotation
Quadratus Femoris Nerve Innervation
Nerve to Quadratus Femoris (L5, S1)
Piriformis Origin
Sacrum
Piriformis Insertion
Greater trochanter of femur
Piriformis Action
Lateral rotation
Piriformis Nerve Innervation
Nerve to Piriformis (L5-S2)
Gemellus Superior Origin
Ischium
Gemellus Superior Insertion
Greater Trochanter of femur
Gemellus Superior Action
Lateral rotation
Gemellus Superior Nerve Innervation
Nerve to Obturator internus (L5, S1)
Gemellus Inferior Origin
Ischium
Gemellus Inferior Insertion
Greater Trochanter of femur
Gemellus Inferior Action
Lateral rotation
Gemellus Inferior Nerve Innervation
Nerve to Obturator internus (L5, S1)
Gluteus Maximus Origin
Posterior sacrum and ilium
Gluteus Maximus Insertion
Posterior femur distal to greater trochanter and iliotibial (IT) band
Gluteus Maximus Actions
Hip extension, lateral rotation and ABduction
Gluteus Maximus Nerve Innervation
Inferior gluteal nerve (L5-S2)
Gluteus Medius Origin
Outer surface of Ilium
Gluteus Medius Insertion
Lateral surface of Greater Trochanter
Gluteus Medius Actions
ABduction and Medial rotation
Gluteus Medius Nerve Innervation
Superior gluteal nerve (L4-S1)
Gluteus Minimus Origin
Lateral Ilium
Gluteus Minimus Insertion
Anterior surface of Greater Trochanter
Gluteus Minimus Actions
ABduction and Medial rotation
Gluteus Minimus Nerve Innervation
Superior gluteal nerve (L4-S1)
IlioPsoas Origin
Anterolateral surface T12-L5 and Iliac fossa
IlioPsoas Insertion
Lesser trochanter of femur
IlioPsoas Action
Hip Flexion, lateral rotation
IlioPsoas Nerve Innervation
Femoral nerve (L2, L3)
Rectus Femoris* (Quads) Origin
AIIS
Rectus Femoris* (Quads) Insertion
Tibial tuberosity via patella tendon
Rectus Femoris* (Quads) Actions
Hip flexion, knee extension
Rectus Femoris* (Quads) Nerve Innervation
Femoral nerve (L2-L4)
Vastus Lateralis (Quads) Origin
Linea aspera of femur
Vastus Lateralis (Quads) Insertion
Tibial tuberosity via patella tendon
Vastus Lateralis (Quads) Action
Knee extension
Vastus Lateralis (Quads) Nerve Innervation
Femoral nerve (L2-L4)
Vastus Medialis (Quads) Origin
Linea aspera of femur
Vastus Medialis (Quads) Insertion
Tibial tuberosity via patella tendon
Vastus Medialis (Quads) Action
Knee extension
Vastus Medialis (Quads) Nerve Innervation
Femoral nerve (L2-L4)
Vastus Intermedius (Quads) Origin
Anterior surface of femur
Vastus Intermedius (Quads) Insertion
Tibial tuberosity via patella tendon
Vastus Intermedius (Quads) Action
Knee extension
Vastus Intermedius (Quads) Nerve Innervation
Femoral nerve (L2-L4)
Adductor Magnus Origin
Ischium and Pubis
Adductor Magnus Insertion
Entire Linea aspera and adductor tubercle
Adductor Magnus Action
Hip Adduction
Adductor Magnus Nerve Innervation
Obturator and Sciatic nerves (L3, L4)
Adductor Brevis Origin
Pubis
Adductor Brevis Insertion
Pectinal line and linea aspera
Adductor Brevis Action
Hip Adduction
Adductor Brevis Nerve Innervation
Obturator (L3, L4)
Adductor Longus Origin
Pubis
Adductor Longus Insertion
Middle 1/3 of linea aspera
Adductor Longus Action
Hip Adduction
Adductor Longus Nerve Innervation
Obturator (L3, L4)
Pectineus Origin
Superior ramus of pubis
Pectineus Insertion
Pectineal line of femur
Pectineus Action
Hip Adduction and Hip flexion
Pectineus Nerve Innervation
Femoral nerve (L2-L4)
Gracilis* Origin
Pubis
Gracilis* Insertion
Pes Anserine Tendon - Anteriomedial proximal surface of tibia
Gracilis* Action
Hip Adduction
Gracilis* Nerve Innervation
Obturator nerve (L2, L3)
Tibialis Posterior Origin
Interosseous membrane
Tibialis Posterior Insertion
Navicular, metatarsals and most tarsals
Tibialis Posterior Action
Inversion
Tibialis Posterior Nerve Innervation
Tibial nerve (L5, S1)
Gastrocnemius* Origin
Lateral and Medial Condyles of Femur
Gastrocnemius* Insertion
Calcaneus via Achilles Tendon
Gastrocnemius* Actions
Plantar flexion and knee flexion
Gastrocnemius* Nerve Innervation
Tibial nerve (S1, S2)
Soleus Origin
Posterior tibia and fibula
Soleus Insertion
Calcaneus via Achilles Tendon
Soleus Action
Plantar flexion
Soleus Nerve Innervation
Tibial nerve (S1, S2)
Obturator Externus Origin
Rami of Pubis and Ischium
Obturator Externus Insertion
Trochanteric Fossa
Obturator Externus Action
Lateral rotation of femur
Obturator Externus Nerve Innervation
Obturator nerve (L3, L4)
Obturator Internus Origin
Rami of Pubis and Ischium
Obturator Internus Insertion
Greater Trochanter
Obturator Internus Action
Lateral rotation of femur
Obturator Internus Nerve Innervation
Nerve to Obturator Internus (L5, S1)
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