Extensor hallucis longus corresponds to which myotome level?

Unlock all questions

This demo includes only 20 questions. Upgrade to access hundreds of questions, flashcards, exam simulations, and disable ads.

Full question bankExam simulationsFlashcards
From $9.99Unlock all

Study for the NM3 Spinal Cord Injury (SCI) Test to enhance your understanding. Prepare with interactive quizzes and multiple choice questions. Each question provides insights and explanations. Gear up for your exam today!

Multiple Choice

Extensor hallucis longus corresponds to which myotome level?

Explanation:
The key idea is linking muscle actions to spinal nerve root levels (myotomes). Extensor hallucis longus does big toe extension, a function primarily supplied by the L5 nerve root. In clinical testing, big toe extension points to the L5 myotome, while ankle dorsiflexion (tibialis anterior) is mainly L4 and ankle plantarflexion (gastrocnemius) is mainly S1. So, for the action of extending the big toe, the correct myotome level is L5.

The key idea is linking muscle actions to spinal nerve root levels (myotomes). Extensor hallucis longus does big toe extension, a function primarily supplied by the L5 nerve root. In clinical testing, big toe extension points to the L5 myotome, while ankle dorsiflexion (tibialis anterior) is mainly L4 and ankle plantarflexion (gastrocnemius) is mainly S1. So, for the action of extending the big toe, the correct myotome level is L5.

More Multiple Choice Questions
Subscribe

Get the latest from Examzify

You can unsubscribe at any time. Read our privacy policy