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A&P Lower Extremities

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pmchavana's version from 2015-11-12 03:05

Section 1

Question Answer
PopliteusO: Lateral surface of lateral condyle of femur and lateral meniscus/ I: Posterior portion of tibia/ A: flexes knee weakley/ N: Tibial nerve
SoleusO: Posterior aspect of head of fibula/ I: Posterior surface of calcaneus via calcaneal tendon/ A: planterfexes ankle/ N: Tibial nerve
GastrocnemiusO: Lateral head- lateral aspect of lateral condyle of femur, Medial head- popliteal surface, superior medial condyle/ I: posterior surface of calcaneus via calcaneal tendon/ A: plantarflexes ankle, raises foot when walking/ N: Tibial nerve
Flexor Digitorum LongusO: Medial aspect of posterior surface of tibia/ I: Base of distal phalanges of lateral four digits/ A: Flexes lateral 4 digits & plantarflexes ankle/ N: Tibial nerve
Flexor Hallucis LongusO: Inferior 2/3 of posterior surface of fibula & inferior part of interosseous membrane/ I: Base of distal phalanx of great toe (hallux)/ A: flexes great toe, plantarflexes ankle/ N: Tibial nerve
Extensor Digitorum LongusO: Lateral condyle of tibia and superior 3/4 and anterior surface of interosseous membrane/ I: middle and distal phalanges of lateral 4 digits/ A: extends lateral 4 digits and dorsiflexes ankle/ N: Deep Peroneal nerve
Extensor Hallucis LongusO: Mid portion of anterial surface of fibula and interosseous membrane/ I: dorsal aspect base of hallux/ A: extends great toe, dorsiflexes ankle/ N: Peroneal nerve
Fibularis longus (peroneus)O: Head and superior 2/3 of lateral surface of fibula/ I: Base of 5th metatarsal and medial cuneiform/ A: eversion of foot and weakly plantarflex ankle/ N: superficial peroneal nerve
Fibularis Brevis (peroneus)O: Inferior 2/3 of lateral surface of fibula/ I: Lateral side of base of 5th metatarsal/ A: Eversion of foot and weakly plantarflexes ankle/ N: Superficial fibular nerve
Fibularis Tertius (peroneus)O: Inferior 1/3 of anterior surface of fibula and interosseus membrane/ I: Dorsum of base of 5th metatarsal/ A: dorsiflexion of ankle and helps eversion of foot/ N: Deep Peroneal nerve
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Section 2

Question Answer
Vastus Lateralis (Quadriceps)O: Greater trochanter and lateral lip of linea aspera of femur/ I: Tibial tuberosity via patellar tendon/ A: extends leg/ N: Femoral nerve
Vastus Intermedialis (Quadriceps)O: Anterior and lateral surface of body of femur/ I: Tibial tuberosity via patellar tendon/ A: Extends leg/ N: Femoral nerve
Vastus Medialis (Quadriceps)O: Intertrochanteric line and medial lip of linea aspera of femur/ I: Tibial tuberosity via patellar tendon/ A: Extends leg/ N: Femoral nerve
Rectus Femoris (Quadriceps)O: Anterior inferior iliac spine and ilium superior to acetabulum/ I: Tibial tuberosity via patellar tendon/ A: Extends leg/ N: Femoral nerve
Semimembranosus (Hamstrings)O: Ischial tuberosity/ I: Posterior part of medial condyle of tibia (forms popliteal ligament) /A: Extends thigh, flexes leg and rotates medially/ N: Sciatic nerve
Semitendinosus (Hamstrings)O: Ischial tuberosity/ I: Medial surface of superior part of tibia (pesanserine)/ A: extends thigh, flexes leg and rotates medially/ N: Tibial division of sciatic nerve
Biceps Femoris (Hamstrings)O: Long head- ischial tuberosity, Short head- linea aspera and lateral supracondylar line of femur/ I: head of fibula/ A: flexes leg and rotates it laterally/ N: Long- Sciatic, Short- Peroneal
Gluteus MinimusO: External surface of ilium/ I: Anterior surface of greater trochanter/ A: Abduction and medially rotates thigh/ N: Superior gluteal nerve
Gluteus MaximusO: Posterior Illium, sacrum, coccyx/ I: Iliotibial tract (down to lateral condyle tibia) and gluteal tuberosity of femur/ A: Extends thigh, assists in lateral rotation/ N: Inferior gluteal nerve
Gluteus MediusO: External surface of ilium/ I: Lateral surface of greater trochanter of femur/ A: Abduction and medial rotation of thigh/ N: Superior gluteal nerve
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Section 3

Question Answer
PectineusO: Superior ramus of pubis/ I: Inferior to lesser trochanter of femur/ A: Adducts and flexes thigh/ N: Femoral nerve
Iliacus (Iliopsoas)O: Iliac crest, iliac fossa, sacrum and anterior sacroiliac ligaments/ I: Tendon of psoas major, lesser trochanter and femur distal to it/ A: flexes thigh at hip/ N: Femoral nerve
Psoas major (Iliopsoas)O: T12-L5 and transverse process of lumbar vertebrae/ I: Lesser trochanter of femur/ A: Flexes thigh at hip/ N: Anterior Rami of lumbar nerves
Tensor fascia LataO: Anterior Superior Iliac Spine and Iliac crest/ I: Iliotibial tract that attaches to lateral condyle of tibia/ A: Abduction, medial rotation and flexes thigh/ N: Superior gluteal nerve
SartoriusO: Anterior superior iliac spine/ I: Superior part of medial surface of tibia (pes anserine)/ A: Flexes, abducts, and laterally rotates thigh at hip joint/ N: Femoral nerve
Adductor LongusO: Body of pubis inferior to pubic crest/ I: Middle third of linea aspera of femur/ A: Adducts thigh/ N: Obturator nerve
Adductor BrevisO: Body of inferior ramus of pubis/ I: Pectineal line and proximal part of linea aspera of femur/ A: Adducts thigh and some flexion/ N: Obturator nerve
Adductor MagnusO: Inferior ramus of pubis, ramus of ischium and ischial tuberostiy/ I: Gluteal tuberosity, linea aspera, medial supracondylar line, adductor tubercle/ A: adducts thigh/ N: Obturator and Sciatic nerve
GracilisO: Body and inferior ramus of pubis/ I: Superior part of medial surface of tibia (pes anserine)/ A: Adducts thigh, flexes thigh, medially rotates thigh/ N: Obturator nerve
PiriformisO:Anterior surface of sacrum/ I: Superior border of greater trochanter of femur/ A: External rotation of thigh/ N: Branches of anterior Ramis of S1 and S2, sciatic nerve
Quadratus FemorisO:Lateral body of ischial tuberosity/ I: Intertrochanteric crest of femur/ A: Lateral rotation of thigh/ N: nerve quadratus femoris
Tibialis AnteriorO:Lateral condyle and superior half of lateral surface of tibia/ I: Medial surfaces of medial cuneiform and base of 1st metatarsal/ A: Dorsiflexes ankle and inverts foot/ N: Peroneal nerve
Tibialis PosteriorO: Interosseaus membrane/ I: Tuberosity of navicular, cuneiform, and cuboid and bases of 2nd -4th metatarsals/ A: Plantarflexes andkle and inverts foot/ N: Tibial nerve
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