CGSC376 Chapter Notes - Chapter 3: Thyroid Cartilage, Rib Cage, Vocal Folds
4 Nov 2018
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When you take a breath in your rib cage expands. When you relax the thoracic cage becomes smaller. No longer evenly distributed when you are breathing for speech. ***automatic facility for checking the descent of the rib cage so that our exhalation supports the length of the utterance. Pleurae: lungs move wherever the bony cage takes it. Bottom of rib cage is the diaphragm. Superior view: vertebrae in the back and sternum in the front. Larynx: contains only one bone: hyoid bone *floats not connected to any other bone in body. Epiglottis cartilage: leaf-like structure, move downs over the space between vocal cords when you"re swallowing so you do not get anything but gas into your lungs. Cricoid cartilage: inferior to thyroid cartilage (sits right below) When it rocks it changes the length of the vocal cords. Arytenoid cartilage: comes in a pair, one sitting on either side of the cricoid cartilage, triangular shape.
