Motor supply of infrahyoid muscle is______________?
Correct answer: A. Branches of cervical plexus
- A. Branches of cervical plexus
- B. Vagus nerve
- C. Glossopharyngeal nerve
- D. Mandibular nerve
Explanation
Most infrahyoid muscles receive motor fibres through the ansa cervicalis, a loop formed by cervical spinal nerves C1 to C3. The main exception is thyrohyoid, supplied by C1 fibres travelling with the hypoglossal nerve, but the general answer is cervical plexus branches.
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