Lower Limb Movements Quiz
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Lower Limb Movements Quiz

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Questions and Answers

What is the primary action of the popliteus muscle?

  • Extension of the knee
  • Medial rotation of the hip
  • Lateral rotation of the knee
  • Unlocking the knee (correct)

    • Which muscle is innervated by the obturator nerve?

  • Sartorius
  • Gracilis (correct)
  • Semitendinosus
  • Biceps femoris

    • Which nerve supplies the quadriceps femoris muscle?

  • Femoral nerve (correct)
  • Tibial nerve
  • Deep peroneal nerve
  • Obturator nerve

    • Which muscle contributes to dorsiflexion of the foot?

    <p>Tibialis anterior</p> Signup and view all the answers

    What is the innervation of the muscle responsible for extending the toes?

    <p>Deep peroneal nerve</p> Signup and view all the answers

    What movement does the semimembranosus muscle primarily facilitate?

    <p>Knee flexion</p> Signup and view all the answers

    The biceps femoris muscle is innervated by which nerve for its short head?

    <p>Common peroneal nerve</p> Signup and view all the answers

    Which muscle is NOT involved in the medial rotation of the knee?

    <p>Biceps femoris</p> Signup and view all the answers

    Which nerve supplies the Peroneus (Fibularis) Brevis?

    <p>Superficial peroneal Nerve</p> Signup and view all the answers

    Which muscle is primarily responsible for eversion of the foot?

    <p>Peroneus (Fibularis) Longus</p> Signup and view all the answers

    Which of the following muscles is innervated by the Posterior Tibial Nerve?

    <p>Flexor Hallucis Longus</p> Signup and view all the answers

    Which muscle contributes to both inversion and plantarflexion of the foot?

    <p>Tibialis Posterior</p> Signup and view all the answers

    Which of these muscles is NOT involved in dorsiflexion?

    <p>Flexor Hallucis Longus</p> Signup and view all the answers

    Which nerve innervates the Extensor Hallucis Longus muscle?

    <p>Deep peroneal Nerve</p> Signup and view all the answers

    What is the primary action of the Gastrocnemius muscle?

    <p>Plantarflexion</p> Signup and view all the answers

    Which of the following is responsible for toe flexion?

    <p>Flexor Digitorum Longus</p> Signup and view all the answers

    What is the primary movement associated with the superior gluteal nerve injury?

    <p>Hip abduction</p> Signup and view all the answers

    Which muscle is primarily responsible for knee extension?

    <p>Quadriceps</p> Signup and view all the answers

    Which nerve injury results in loss of ankle dorsiflexion?

    <p>Common fibular nerve injury</p> Signup and view all the answers

    What type of movement is described when the foot is pointed downwards?

    <p>Plantarflexion</p> Signup and view all the answers

    Which anatomical structure would be affected by a fracture at the neck of the fibula?

    <p>Common fibular nerve</p> Signup and view all the answers

    Which movement occurs when moving the leg away from the midline of the body?

    <p>Abduction</p> Signup and view all the answers

    Which nerve supplies the muscle responsible for hip flexion?

    <p>Femoral nerve</p> Signup and view all the answers

    What is the effect of tibial nerve injury on foot movement?

    <p>Inability to plantarflex the foot</p> Signup and view all the answers

    Which muscle is primarily responsible for dorsiflexion of the toes?

    <p>Extensor Hallucis Longus</p> Signup and view all the answers

    What nerve supplies the Flexor Digitorum Longus muscle?

    <p>Posterior tibial nerve</p> Signup and view all the answers

    Which of the following movements is NOT associated with the Dorsal Interossei muscles?

    <p>Adduction</p> Signup and view all the answers

    Which muscle is responsible for the plantarflexion of the toes?

    <p>Flexor Hallucis Longus</p> Signup and view all the answers

    Which nerve supplies the 1st lumbrical of the foot?

    <p>Medial plantar nerve</p> Signup and view all the answers

    Which muscle is involved in the abduction of the toes?

    <p>Dorsal Interossei</p> Signup and view all the answers

    Which muscle and its nerve supply are paired incorrectly?

    <p>Flexor Hallucis Longus - Lateral Plantar Nerve</p> Signup and view all the answers

    Which movement is primarily facilitated by the Flexor Digitorum Longus?

    <p>Plantarflexion</p> Signup and view all the answers

    What condition is suggested by a positive Trendelenburg's sign?

    <p>Weakness in the gluteal muscles</p> Signup and view all the answers

    Which of the following best describes the compensatory movement associated with Trendelenburg's sign?

    <p>The trunk lurches toward the affected side</p> Signup and view all the answers

    Which nerve is primarily affected in patients demonstrating a positive Trendelenburg's sign?

    <p>Superior gluteal nerve</p> Signup and view all the answers

    What is the most common cause of sciatic nerve injury?

    <p>Compression from lumbar disc prolapse</p> Signup and view all the answers

    Which condition is specifically associated with muscle spasms affecting the sciatic nerve?

    <p>Piriformis syndrome</p> Signup and view all the answers

    Which of these activities could potentially lead to piriformis syndrome?

    <p>Bicycle racing</p> Signup and view all the answers

    In which part of the body would you most likely find a stab wound causing sciatic nerve injury?

    <p>The gluteal region</p> Signup and view all the answers

    Which of the following muscle groups is primarily affected in individuals with a positive Trendelenburg's sign?

    <p>Abductor muscles of the hip</p> Signup and view all the answers

    Study Notes

    Lower Limb Movements

    • Extension:
      • Muscles: Quadriceps femoris (rectus femoris, vastus lateralis, vastus medialis, vastus intermedius), popliteus, sartorius
      • Nerve Supply: Femoral nerve
    • Medial Rotation (Unlocking of the Knee):
      • Muscles: Semitendinosus, semimembranosus, gracilis
      • Nerve Supply: Tibial part of sciatic nerve (semitendinosus, semimembranosus), obturator nerve (gracilis)
    • Lateral Rotation (Locking of the Knee):
      • Muscles: Biceps femoris (long head, short head)
      • Nerve Supply: Tibial part of sciatic nerve (long head), common peroneal nerve (short head)

    Ankle Joint Movements

    • Dorsiflexion (Extension):
      • Muscles: Tibialis anterior, extensor digitorum longus, extensor hallucis longus, peroneus (fibularis) tertius
      • Nerve Supply: Anterior tibial (deep peroneal) nerve
    • Plantarflexion (Flexion):
      • Muscles: Gastrocnemius, soleus, plantaris, tibialis posterior, flexor digitorum longus, flexor hallucis longus
      • Nerve Supply: Posterior tibial nerve

    Subtalar Joint Movements

    • Eversion:
      • Muscles: Peroneus (fibularis) tertius, peroneus (fibularis) longus, peroneus (fibularis) brevis
      • Nerve Supply: Anterior tibial (deep peroneal) nerve (peroneus tertius), musculocutaneous (superficial peroneal) nerve (peroneus longus, peroneus brevis)
    • Inversion:
      • Muscles: Tibialis anterior, extensor hallucis longus, extensor digitorum longus, tibialis posterior, flexor digitorum longus, flexor hallucis longus
      • Nerve Supply: Anterior tibial (deep peroneal) nerve (tibialis anterior, extensor hallucis longus, extensor digitorum longus), posterior tibial nerve (tibialis posterior, flexor digitorum longus, flexor hallucis longus)

    Metatarsophalangeal Joint Movements

    • Dorsiflexion (Extension):
      • Muscles: Extensor digitorum longus, extensor hallucis longus
      • Nerve Supply: Anterior tibial (deep peroneal) nerve
    • Plantarflexion (Flexion):
      • Muscles: Flexor digitorum longus, flexor hallucis longus, lumbricals of foot
      • Nerve Supply: Posterior tibial nerve (flexor digitorum longus, flexor hallucis longus), medial plantar nerve (1st lumbrical), lateral plantar nerve (remaining lumbricals)
    • Adduction (PAD):
      • Muscles: Plantar interossei
      • Nerve Supply: Lateral plantar nerve
    • Abduction (DAB):
      • Muscles: Dorsal interossei of foot

    Trendelenburg's Sign

    • Cause: Weakness or paralysis of hip abductor muscles (gluteus medius and gluteus minimus)
    • Mechanism: When standing on the affected limb, the pelvis drops on the opposite side (contralateral side)
    • Common Cause: Superior gluteal nerve damage
    • Compensation: Patient lurches their trunk towards the affected side to maintain pelvic level during gait

    Sciatic Nerve Injury

    • Common Causes:
      • Lumbar disc prolapse (herniation)
      • Piriformis Syndrome (spasm in piriformis muscle)
      • Stab wound in the gluteal region or posterior compartment of thigh
    • Possible Location: Any part of the sciatic nerve's course

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    Lower Limb Movements (PDF)

    Description

    Test your knowledge on the movements of the lower limb, including the muscles involved and their nerve supplies. This quiz covers key concepts such as knee rotations and ankle joint movements. Perfect for students studying anatomy or preparing for health-related exams.

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