Questions and Answers
Which nerve innervates the plantar interossei muscles?
What is the primary action of the dorsal interossei muscles at the metatarsophalangeal joints (MTP)?
Which of the following statements about the plantar interossie is true?
What spinal roots supply the lateral plantar nerve?
Signup and view all the answers
What action do the plantar interossie muscles perform apart from adduction at the MTP joints?
Signup and view all the answers
What is the primary function of the plantar interossei muscles?
Signup and view all the answers
Which root levels contribute to the lateral plantar nerve supplying the intrinsic foot muscles?
Signup and view all the answers
What is the action of the dorsal interossei muscles at the metatarsophalangeal joints?
Signup and view all the answers
The plantar interossei muscles are primarily responsible for which of the following actions at the proximal interphalangeal joints?
Signup and view all the answers
Which of the following statements is accurate regarding the actions of intrinsic foot muscles?
Signup and view all the answers
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.
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
Description
Explore the complex anatomy and functions of the intrinsic foot muscles, particularly focusing on the 4th layer, which includes the plantar and dorsal interossei. This quiz covers their actions, nerve supply, and associated actions at the metatarsophalangeal and interphalangeal joints. Test your knowledge of these crucial muscles and their roles in foot mechanics.
