Intrinsic Foot Muscles - 3rd Layer
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Questions and Answers

What is the root nerve supply of the flexor hallucis brevis muscle?

  • L3, L4
  • L1, L2
  • S1, S2 (correct)
  • S2, S3
  • Which of the following actions is performed by the adductor hallucis muscle?

  • Dorsiflexion of the foot
  • Adduction of MTP joint 1 (correct)
  • Flexion of MTP joint 5
  • Extension of MTP joint 1
  • Which nerve innervates the flexor digiti minimi muscle?

  • Medial plantar nerve
  • Superficial peroneal nerve
  • Deep peroneal nerve
  • Lateral plantar nerve (correct)
  • What is the main action of the flexor hallucis brevis muscle?

    <p>Flexion of MTP joint 1</p> Signup and view all the answers

    Which muscle is responsible for flexion of the MTP joint 5?

    <p>Flexor digiti minimi</p> Signup and view all the answers

    Which muscle is supplied by the medial plantar nerve?

    <p>Flexor hallucis brevis</p> Signup and view all the answers

    What action is performed by the adductor hallucis muscle?

    <p>Adduction of MTP joint 1</p> Signup and view all the answers

    Which of the following muscles is innervated by the lateral plantar nerve?

    <p>Flexor digiti minimi</p> Signup and view all the answers

    What is the root nerve supply for the flexor digiti minimi muscle?

    <p>S2,3</p> Signup and view all the answers

    Which action is associated with the flexor hallucis brevis?

    <p>Flexion of MTP joint 1</p> Signup and view all the answers

    Study Notes

    Intrinsic Foot Muscles - 3rd Layer

    • Flexor Hallucis Brevis

      • Innervated by the medial plantar nerve.
      • Originates from the S1, S2 nerve roots.
      • Function: Flexes the metatarsophalangeal (MTP) joint of the big toe.
    • Adductor Hallucis

      • Innervated by the lateral plantar nerve.
      • Originates from the S2, S3 nerve roots.
      • Function: Adducts the MTP joint of the big toe.
    • Flexor Digiti Minimi

      • Innervated by the lateral plantar nerve.
      • Originates from the S2, S3 nerve roots.
      • Function: Flexes the MTP joint of the little toe.

    Intrinsic Foot Muscles - 3rd Layer

    • Flexor Hallucis Brevis

      • Innervated by the medial plantar nerve.
      • Originates from the S1, S2 nerve roots.
      • Function: Flexes the metatarsophalangeal (MTP) joint of the big toe.
    • Adductor Hallucis

      • Innervated by the lateral plantar nerve.
      • Originates from the S2, S3 nerve roots.
      • Function: Adducts the MTP joint of the big toe.
    • Flexor Digiti Minimi

      • Innervated by the lateral plantar nerve.
      • Originates from the S2, S3 nerve roots.
      • Function: Flexes the MTP joint of the little toe.

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    Description

    This quiz focuses on the intrinsic muscles of the foot's third layer, including the flexor hallucis brevis, adductor hallucis, and flexor digiti minimi. Explore their innervation, root levels, and actions related to the MTP joints. Test your knowledge about these essential muscles in foot anatomy.

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