CMD 272 Lecture Notes - Lecture 2: Earwax, Palatopharyngeus Muscle, Timpani

• School: URI
• Department: Communicative Disorders
• Course: CMD 272
• Professor: Milner Bethany

Document Summary

Extrinsic ligaments: provides attachment between hyoid or trachea and cartilages of larynx. Thyrohyoid membrane: greater cornu of hyoid to lateral thyroid. Lateral thyrohyoid ligament: posterior to thyrohyoid membrane; superior cornu of thyroid to posterior tip of greater cornu of hyoid inner thyroid. Median thyrohyoid ligament: corpus hyoid to upper border of anterior thyroid. Hyoepiglottic ligament and thyroepiglottic ligament: epiglottis to corpus hyoid and. Lateral and medial glossoepiglottic ligaments: epiglottis to tongue overlay of mucous membrane creates valleculae between tongue and epiglottis. Intrinsic ligaments: connects cartilages of larynx, forms structural support for larynx and vocal folds. Fibro elastic membrane of larynx: quadrangular membranes, aryepiglottic folds, lower conus elasticus and vocal ligament. Quadrangular membranes: connective tissue, runs from arytenoids to epiglottis and thyroid cartilages **forms false vocal folds. Aryepiglottic muscles: course from side of epiglottis to arytenoid apex, form upper margin of quadrangular membrane and aryepiglottic folds. Pyriform sinus: space between aryepiglottic fold and thyroid cartilage.