教师如何保护嗓子（How can teachers protect their voice）.docVIP

教师如何保护嗓子（How can teachers protect their voice） How can teachers protect their voice? In recent years, the incidence of vocal cord diseases such as teachers and actors has gradually increased. The most common diseases are vocal cord inflammation, vocal cord polyps, vocal nodules, and even difficult to treat vocal cords, leukoplakia, laryngeal keratosis, and vocal cord cancer. Many teachers think hoarse voice is not a big problem, there is no need to make a fuss about it. It will be good to take some anti-inflammatory medicine. In fact, the first is hoarseness lesions, at least have buried hidden trouble so Theres no telling, remind the teacher must pay attention to protect their throat. Sound is emitted by the breath of the lungs against the closed vocal cords, forming language through the lips, teeth, and tongue, and forming a musical sound through the resonant cavity. The front end is fixed on the vocal joint angle at the rear of the thyroid cartilage, are respectively fixed on the left and right two arytenoid cartilage. The two arytenoid cartilage like shaft, with vocal fold inward and outward rotation, inward vocal cord closure sound change, turn out the vocal cords open breathing. The vocal fold is like two pieces of leek leaves, the edge is very thin, very neat, very straight, moving freely. Any one of these problems can cause hoarseness. Vocal hypertrophy sound becomes scratchy, such as acute laryngitis vocal cord swelling, chronic laryngitis and vocal hypertrophy. Vocal cord edge prominent, such as vocal cord polyps, vocal nodules, papilloma, throat cancer and so on, the vocal cord edge of the prominent cause of the vocal fold closure, so hoarse voice. Poor tension of the vocal cords, such as the relaxation of the vocal cords, can not be tight, closed when the vocal cords form a shuttle shaped gap, closed lax, resulting in hoarseness. Vocal cord movement is limited, such as vocal cord paralysis and laryngeal stenosis, the damaged vocal cords can not be closed