CSD-2260 Study Guide - Final Guide: Sternothyroid Muscle, Defecation, Tracheotomy
24 Oct 2016
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Document Summary
What is phonation: the production of sounds, also known as voicing, occurs within larynx, product of vibrating vocal folds, respiration provides the energy that allows phonation. The vocal folds: five layers of tissue. Thyroarytenoid muscle- makes up bulk of vocal folds. **3&4 make up vocal ligament: glottis-area between the vocal folds. Supra glottal- above vocal folds: adduction is closing vocal folds, abduction is opening vocal folds, vocal fold treatment. Dry tissue that causes ulcers and vocal nodules. The larynx: protective functions- nonspeech function. Clamps airway in response to possible intrusion by foreign objects. Abdominal fixation impounds air in thorax to stabilize the torso. Swimming, lifting, defecation, childbirth: musculo cartilaginous structure located at the top of the last ring of the trachea, average length of larynx in males 44 mm, average length of larynx in females 36 mm, laryngectomy. Patient undergoes tracheotomy and must breathe through a tracheostoma. Cricothyroid: pars recta and pars oblique.
