What type of muscle is the posterior cricoarytenoid?

The posterior cricoarytenoid muscle is classified as striated muscle. This muscle is important in the context of laryngeal function, as it is the only muscle that abducts the vocal cords, helping to open the glottis during breathing. Striated muscle is also known as skeletal muscle and is characterized by a banded appearance due to the arrangement of actin and myosin filaments. This structural organization enables precise and rapid contractions, which are essential for fine motor control, such as the intricate movements required for speech and breathing.

Understanding the function and classification of the posterior cricoarytenoid is crucial in studying the muscular control of phonation and airway management.