Human Physiology An Elementary Text book of Anatomy Physiology And Hygiene
The book Human Physiology An Elementary Text book of Anatomy Physiology And Hygiene was written by author John W John Woodside Ritchie Here you can read free online of Human Physiology An Elementary Text book of Anatomy Physiology And Hygiene book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is Human Physiology An Elementary Text book of Anatomy Physiology And Hygiene a good or bad book?
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the larynx from the front to the back. They are attached to the thyroid cartilage in front and to the vocal processes of the arytenoid cartilages at the back. They are buried in the mucous membrane that lines the larynx, and are therefore attached to the side wall of the larynx by one edge. If you will gather up and draw out a fold of skin on the back of the hand, you will have something that in a way represents a vocal cord. The Vocal Cords in Action. In ordinary breathing the vocal cords lie ...close to the walls of the larynx and are not affected by the air as it passes out of and into the lungs. In talking or singing the cords are drawn out from the walls and stretched 174 HUMAN PHYSIOLOGY across the opening of the larynx, until there is only a narrow slit between the cords. The air passing out over the tightly stretched cords causes them to vibrate and produce the sound of the voice. To make a gentle sound, a slight current of air is passed over the vocal cords. To make a loud sound a heavy current of air is sent out.
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