Vessels of the larynx The larynx is supplied by the superior (branch of external carotid artery) and inferior thyroid arteries (branch of thyrocervical trunk of the subclavian artery respectively) above and below the vocal cords. Venous drainage occurs in the correspondingly named veins (ultimately draining into the brachiocephalic vein). Lymphatic drainage goes to the deep cervical lymph nodes. Nerves of the larynx Sensation to the mucous membrane … Continue reading Larynx vessels & nerves

The larynx (voice box) is the modified part of the respiratory tract sitting above the trachea and suspended from the hyoid bone. It consists of several cartilages that form the laryngeal skeleton, connected by the laryngeal membranes. Its main functions are: A protective sphincter for the rest of the airway Phonation (speech generation), involving modifying airflow through the vocal cords controlled by the intrinsic muscles … Continue reading Larynx

Extrinsic laryngeal muscles move the position of the larynx and are divided into the elevators and depressors. This may be useful for closing the laryngeal inlet when swallowing and for phonation Elevators of the larynx These muscles move the larynx upwards to close the laryngeal inlet during swallowing. Since they larynx is connected to they hyoid, elevator muscles can act: via the hyoid: the suprahyoid … Continue reading Extrinsic laryngeal muscles