Muscles, Nerves and Movement
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| What are the 3 major nerves that supply the lower extremity? | femoral nerve, sciatic nerve, & obturator nerve
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| This nerve supplies the muscles of the anterior compartment of the thigh. | Femoral nerve
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| This nerve supplies the muscles of the medial (adductor) compartment of the thigh. | Obturator nerve
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| This is really 2 nerves that are bundled into 1 nerve in the thigh (tibial n. and common fibular n.). | Sciatic nerve
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| This nerve supplies the posterior compartment of the thigh, leg, & plantar surface of the foot. | Tibial nerve
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| This nerve supplies the anterior & lateral compartments of the leg and doral surface of the foot. | Common fibular nerve
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| As the external iliac artery passes into the thigh, it is renamed_______________. This is the main artery to the lower extremity. | femoral artery
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| This artery supplies anterior of the thigh. | Femoral artery
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| This branch of the femoral artery supplies the posterior compartment of the thigh. | deep artery of the thigh
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| As the femoral artery passes behind the knee it is renamed___________ and supplies around the knee. | popliteal artery
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| As the popliteal artery enters the leg, it branches into the________ and________. | anterior tibial and posterior tibial arteries.
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| The anterior tibial artery ends as the ________ of the foot. | dorsalis pedis artery
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| A branch of the posterior tibial artery that supplies the lateral compartmet of the lef. | fibular artery
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| The posterior tibial artery ends as the _________. | medial and lateral plantar arteries of the foot.
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| Innervaterd by Anterior rami of lumbar nn This muscle acts conjointly in flexing thigh at hip joint & in stabilizing this joint. | Iliopsoas
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| Innervated by Inferior gluteal n This muscle extends thigh & assists in its lateral rotation; steadies thigh & assists in rising from sitting position | Gluteus maximus
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| Innervated by Superior gluteal n Abducts & medially rotates thigh | Gluteus medius & Gluteus minimus
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| Innvervated by Femoral nerve This muscle flexes, abducts, & laterally rotates thigh at hip joint; flexes leg at knee joint | Sartorius
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| These muscles are innervated by the femoral nerve. They extend leg at knee joint; rectus femoris also steadies hip joint & helps iliopsoas flex thigh | Rectus femoris, Vastus medialis, Vastus intermedius, Vastus lateralis
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| These muscles are innervated by the sciatic nerve. They flex leg & rotate it laterally when knee is flexed; extends thigh | Biceps femoris
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| These nerves are innervated by the tibial division of the sciatic nerve. They extend thigh; flex leg & rotate it medially when knee is flexed | Semimembranous & Semitendinosus
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| Innervated by obturator nerve. Adducts thigh; flexes leg; helps rotate leg medially | Gracilis
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| Innervated by Obturator neve. Adducts thigh. | Adductor longus
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| Innervated by Obturator nerve & tibial part of sciatic nerve. Adducts thigh; flexes thigh & extends thigh | Adductor magnus
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| Innervated by obturator nerve. Adducts thigh; to some extent flexes it | Adductor brevis
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| Adducts & flexes thigh; assist w. medial rotation of thigh | Pectineus
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| Innervated by deep fibular nerve. Dorsiflexes ankle & inverts foot. | Tibialis anterior
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| Innervated by deep fibular nerve. Extends lateral 4 digits & dorsiflexes ankle | Extensor digitorum longus
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| Innervated by deep fibular nerve. Extends great toe & dorsiflexes ankle | Extensor hallucis longus
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| Innervated by Superficial fibular nerve. These muscles of the lateral leg everts foot & weakly plantarflexes ankle. | Fibularis longus & Fibularis brevis
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| Innervated by Tibial nerve. Plantarflexes ankle when knee is extended; raises heel during walking; flexes leg at knee joing | Gastrocnemius
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| Innervated by Tibial nerve. Plantarflexes ankle independently of knee position; steadies leg on foot | Soleus
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| Innervated by Tibial nerve. Weakly flexes knee & unlocks it; medially rotates ribia of unplanted limb | Popliteus
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| Innervated by Tibial nerve. Flexes great toe | Flexor hallucis longus
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| Innervated by Tibial nerve. Flexes lateral four digits; plantarflexes ankle | Flexor digitorum longus
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| Plantarflexes ankle; inverts foot | Tibialis posterior
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| Innervated by deep fibular nerve. Aides the extensor digitorum longus in extending the 4 medial toes | Extensor hallucis brevis
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| Innervated by deep fibular nerve. Aidses the extensor hallucis longus in extending the great toe | Extensor digitorum brevis
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| Innervated by medial plantar nerve. Abducts & flexes 1st digit (great toe, hallux) | Abductor hallucis
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| Innervated by medial plantar nerve. Flexes lateral 4 digits. | Flexor digitorum brevis
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| Innervated by Lateral plantar nerve. Abducts & flexes little toe (5th digit) | Abductor digiti minimi
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| Innervated by Lateral plantar nerve. Assists flexor digitorum longus in flexing lateral 4 digits | Quadratus plantae
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| Innervated by medial plantar nerve. Flexes proximal phalanx of 1st digit. | Flexor hallucis brevis
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| Innervated by lateral plantar nerve. Adducts 1st digit | Adductor hallucis
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| Innervated by lateral plantar nerve. Flexes proximal phalanx of 5th digit, thereby assisting w. its flexion | Flexor digiti minimi brevis
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| Innervated by lateral plantar nerve. Adducts digits (3-5) & flex metatarsophalangeal joints | Plantar interossei
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| Abduct digits (2-4) & flex metatarsophalangeal joints | Dorsal interossei
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| What is the function of the anterior cruciate ligament (ACL)? | It prevents posterior displacement of the femur on the tibia & hyperextenstion of the knee joint.
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| What is the function of the posterior cruciate ligament (PCL)? | It prevents the anteriior displacement of the tibia on the femur & helps prevent hyperflexion of the knee joint. It is the main stabilizing factor for the femur.
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Created by:
arieal1
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