Can you explain the muscles of the larynx and their innervation?
Understand the Problem
The question appears to be focusing on the anatomy and function of the larynx, specifically regarding muscles and their innervation, as well as vocal cord paralysis and its causes. It discusses the role of various nerves and anatomical structures involved with the larynx and vocal cords.
Answer
Intrinsic muscles: recurrent laryngeal nerve; Cricothyroid: external branch of superior laryngeal nerve.
The intrinsic muscles of the larynx are mainly innervated by the recurrent laryngeal nerve, except the cricothyroid muscle, which is innervated by the external branch of the superior laryngeal nerve.
Answer for screen readers
The intrinsic muscles of the larynx are mainly innervated by the recurrent laryngeal nerve, except the cricothyroid muscle, which is innervated by the external branch of the superior laryngeal nerve.
More Information
The cricothyroid muscle is crucial for pitch modulation as it tenses the vocal cords, while other intrinsic muscles help with phonation and respiration.
Tips
A common mistake is confusing the innervation of the cricothyroid muscle with other intrinsic muscles of the larynx.
Sources
- Muscles of the Larynx - TeachMeAnatomy - teachmeanatomy.info
- Anatomy, Head and Neck: Laryngeal Muscles - StatPearls - NCBI - ncbi.nlm.nih.gov
- Muscles of the larynx: Anatomy, function, diagram | Kenhub - kenhub.com
