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Questions and Answers
Which nerve innervates the plantar interossei muscles?
Which nerve innervates the plantar interossei muscles?
- Tibial nerve
- Medial plantar nerve
- Deep peroneal nerve
- Lateral plantar nerve (correct)
What is the primary action of the dorsal interossei muscles at the metatarsophalangeal joints (MTP)?
What is the primary action of the dorsal interossei muscles at the metatarsophalangeal joints (MTP)?
- Abduction and flexion (correct)
- Flexion and adduction
- Adduction and extension
- Extension and adduction
Which of the following statements about the plantar interossie is true?
Which of the following statements about the plantar interossie is true?
- They primarily perform abduction at the MTP joints.
- They are responsible for adduction at the MTP joints. (correct)
- They assist in extension at the PIP and DIP joints.
- They are innervated by the medial plantar nerve.
What spinal roots supply the lateral plantar nerve?
What spinal roots supply the lateral plantar nerve?
What action do the plantar interossie muscles perform apart from adduction at the MTP joints?
What action do the plantar interossie muscles perform apart from adduction at the MTP joints?
What is the primary function of the plantar interossei muscles?
What is the primary function of the plantar interossei muscles?
Which root levels contribute to the lateral plantar nerve supplying the intrinsic foot muscles?
Which root levels contribute to the lateral plantar nerve supplying the intrinsic foot muscles?
What is the action of the dorsal interossei muscles at the metatarsophalangeal joints?
What is the action of the dorsal interossei muscles at the metatarsophalangeal joints?
The plantar interossei muscles are primarily responsible for which of the following actions at the proximal interphalangeal joints?
The plantar interossei muscles are primarily responsible for which of the following actions at the proximal interphalangeal joints?
Which of the following statements is accurate regarding the actions of intrinsic foot muscles?
Which of the following statements is accurate regarding the actions of intrinsic foot muscles?
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Study Notes
Intrinsic Foot Muscles - 4th Layer
- The fourth layer of intrinsic foot muscles includes the plantar interossei and dorsal interossei.
- Both sets of muscles are innervated by the lateral plantar nerve, which is a branch of the tibial nerve.
- The roots associated with the lateral plantar nerve originate from the S2 and S3 spinal segments.
Plantar Interossei
- The primary function of the plantar interossei is to facilitate metatarsophalangeal (MTP) adduction and flexion.
- Assist in extensions at the proximal interphalangeal (PIP) and distal interphalangeal (DIP) joints.
Dorsal Interossei
- The dorsal interossei perform MTP abduction and flexion as their main action.
- Also play a role in the extension of the PIP and DIP joints.
Intrinsic Foot Muscles - 4th Layer
- The fourth layer of intrinsic foot muscles includes the plantar interossei and dorsal interossei.
- Both sets of muscles are innervated by the lateral plantar nerve, which is a branch of the tibial nerve.
- The roots associated with the lateral plantar nerve originate from the S2 and S3 spinal segments.
Plantar Interossei
- The primary function of the plantar interossei is to facilitate metatarsophalangeal (MTP) adduction and flexion.
- Assist in extensions at the proximal interphalangeal (PIP) and distal interphalangeal (DIP) joints.
Dorsal Interossei
- The dorsal interossei perform MTP abduction and flexion as their main action.
- Also play a role in the extension of the PIP and DIP joints.
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