Unformatted text preview: -air passing through the glottis vibrates the vocal chords producing sound waves.-The diameter and length of the vocal chords are directly related to the pitch of the voice.-further amplification and resonance occur in the pharynx. -the walls of the trachea are supported by c shaped cartilage called tracheal cartilage. -this cartiliage stiffens the tracheal walls and prevents the collapse of the tracheal walls....
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- Spring '08
- Human voice, Phonation, Mucus, -respiratory mucosa lines