NEET PG DENTAL EXAM

Detailed explanation-1: -The transverse arytenoid muscle, oblique arytenoid muscle, and lateral cricoarytenoid muscle are responsible for adduction of the vocal cords. The posterior cricoarytenoid muscle is the only intrinsic laryngeal muscle that causes abduction of the vocal cords.

Detailed explanation-2: -The posterior cricoarytenoid is the sole abductor of the vocal folds and is innervated by the recurrent laryngeal nerve.

Detailed explanation-3: -The transverse arytenoid is an adductor of the vocal fold thus playing an important role in phonation. Together with the lateral cricoarytenoids, oblique arytenoids and aryepiglottic muscles, this muscle acts as a sphincter for the laryngeal inlet, preventing food or liquid from entering the lower respiratory tract.

Detailed explanation-4: -The glottis consists of two pairs of mucosal folds. These folds are false vocal folds (vestibular folds) and true vocal folds (folds). The false vocal folds are covered by respiratory epithelium, while the true vocal folds are covered by stratified squamous epithelium.