Innervation, Action, Names of Muscles (of Upper and Lower Limb)- a rough guide.
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
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| Thigh- Anterior | Quadriceps Femoris Muscles- Rectus Femoris, Vastus Lateralis, Vastus Intermedius, Vastus Medialis | Femoral Nerve (L2, L3, L4) | Extend the leg at the knee. | (blank) | (blank)
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| Illiopsoas | Psoas Major, Illiacus | PM- Ventral Rami of Lumbar Nerves (L1-3); IM- Femoral (L2-4) | Flexes the thigh at hip and flexor of trunk. | (blank) | (blank)
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| Gluteal Muscles | Tensor fasciae latae, Gluteus maximus, Gluteus medius, Gluteus Minimus | Superior gluteal nerve (L5 and S1) | Abduct thigh and medially rotate thigh. | (blank) | GM- Inferoir gluteal nerve (L5, S1 and S2), also a lateral rotator.
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| Thigh- Medial Compartment | Adductor Muscles (A.Brevis, A.Longus, A.Magnus); Obturator Muscles (O.Externis, O.Internis); Gracillis | Obturtator Nerve (L2, L3, L4) | Adductors+ Gracillis- adduct the leg at the hip; Obturator Muscles- laterally rotate thigh at hip. | (blank) | Obturator internis- supplied by nerve to obturator internis.
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| Thigh- No catagory | Piriformis, Superior gemellus, Inferior gemellus | Piriformis- ventral ramii of S1 and S2; SG- nerve to OI; IG-nerve to QF | Laterally rotate and extend the thigh. | (blank) | (blank)
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| Thigh- Posterior Compartment | Semitendinosus, Semimembranosus, Biceps Femoris (long and short head) | Sciatic Nerve, tibial division (L5, S1, S2) | Flex the leg at the knee and rotate flexed leg medially. | (blank) | Short head of biceps femoris- sciatic nerve, common fibular division.
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| Leg- Anterior Compartment | Dorsiflexors of foot (Tibialis Anterior, Extensor Hallicus Longus, Extensor Digitorum Longus) | Deep fibular (peroneal) nerve (L4 and L5) | Dorsiflex the foot, inverters of foot. | Anterior tibial artery | EHL also extends big toe. ; AT also inverts the foot, EDL also extends the proximal phalanges of the 4 toes.
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| Leg- Lateral Compartment | Everters of foot (Fibularis Longus, Fibularis Brevis) | Superficial fibular (peroneal) nerve. | Evert the foot. | Fibular artery | (blank)
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| Leg- Posterior Compartment (superficial) | Gastrocnemius, Soleus, Plantaris and Popliteus | Tibial nerve (L4, L5, S1 and S2) | GN, S, popliteus- flex foot at ankle | Posterior tibial artery, | Gastocnemius and Soleus flex leg at knee and raise heel during walking; Plamtaris- plantar flexion of foot; Popliteus- medially rotates leg at knee
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| Leg- Posterior Compartment (deep) | Flexor Hallicus Longus, Flexor Digitorum Longus, Tibialis Posterior | Tibial Nerve (S2, S3) | Plantar flex foot at ankle | Posterior tibial artery | FHL- flex distal phalanx of big toe; FDL- flex 4 lateral digits, TP- invert foot (when not weight bearing)
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| Forearm- posterior, deep | Extensor indicis, Extensor pollicus longus, Extensor pollicus brevis, Abductor pollicus longus | Radial nerve and its branches (C7, C8) | Extensors of wrist and at fingers. | (blank) | Pollicus= movements of the thumb; Incidus= middle finger alone
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| Forearm- anterior, deep (supination) | Supinator | Deep branch of radial nerve (C5 and C6) | Rotates radius to supinate the forearm. | Posterior interosseous. | (blank)
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| Forearm- anterior, deep (pronators) | Pronators | Median nerve (PT- C6,C7; PQ- C8, T1) | Pronation of the hand(PQ) and ulna (PT). | (blank) | (blank)
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| Forearm- anterior, superficial | Flexor carpi radialis, Flexor digitorum profundus, brachioradialis, Flexor pollicus longus, Flexor digitorum superficialis, Palmaris longus, Flexor carpi ulnaris | Median nerve and its branches. | Flexors at wrist and fingers. | (blank) | Flexor carpi ulnaris and medial half of flexor digitorum profundus are inervated by ulnar nerve and its branches.
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| Forearm -posterior, superficial | Extensor carpi radialis longus, Extensor carpi radialis brevis, extensor digitorum,Extensor digiti minimi, Extensor carpi ulnaris, | Radial nerve and its branches. | Extensors of wrist and fingers. | (blank) | (blank)
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