Most common size of osteoma ?
Ans. is 'd' i.e., Aryepiglotic folds Inlet of larynx It is an oblique opening bounded : - Anteriorly : - Free margins of epiglottis On the sides : - Aryepigloftic folds Posteriorly : - Interarytenoid folds Vestibular folds (False vocal cords) Two folds of mucous membrane extending anteroposteriorly across the laryngeal cavity. It contains vestibular ligament, a few fibres of thyroarytenoides muslce and mucous glands. Vocal folds (Vocal cords or true vocal cords) Two pearly-white sharp fibroelastic bands extending from the middle of thyroid angle to vocal process of arytenoids They are formed by reflection of the mucosa over vocal ligaments. They have stratified squamous epithelium with no submucous layer. Their blood supply is poor and are almost devoid of lymphatics, this gives vocal cord a pale apperance. Vocal cords along with the upper pa of the vestibule is the only pa of laryngeal mucous membrane which is lined by epithelium of stratified squamous type. Elsewhere in the larynx epithelium of the mucous membrane is ciliated columinar type. Glottis (rima glottidis) It is the opening between the true vocal cords (anteriorly). It is the narrowest pa of larynx in adults. Rima vestibuli It is the space between two vestibular folds.
Frontal sinus
Ethmoid sinus
Maxillary sinus
Aryepiglotic folds