SPHHRNG 2230 Lecture Notes - Lecture 3: Fundamental Frequency, Rib Cage, Phonation
Document Summary
Articulatory mechanism- tongue, lip, mandible (jaw), palate, teeth. Main purpose is to maintain life through breathing. We do 12/18 breaths per minute when relaxed. We need much more breath to talk. Breathing is achieved by movements of rib cage and diaphragm. Rib cage can be raised slightly by contraction of skeletal muscles. Diaphragm is a dome-shaped muscle that separates the thorax and abdomen. Under contraction, it flattens and descends towards the abdomen. You need to balance the pressure in the lungs and in the atmosphere. Respiratory cycle one exhale and one inhale is one cycle. Total lung volume: m 6 w 4. Musculocartilaginous structure forming the superior terminal part of the trachea larynx is located b/w the trachea inferiorly and the hyoid bone superiorly larynx cartilages: Cuneiforms (two) the epiglottis is a leaf-like structure that bends over vocal folds when we swallow.