“ The nose- Warms and moisten air. The nasal cavities are involved in the resonance of tones.
The oral cavity- Includes the lips, teeth, and tongue. The structures serve as articulators.
The pharynx and the oral cavity- Both act as resonators that selectively amplify to varying degrees of intensity, fundamental tones and overtones.
The larynx- An organ consisting of a cartilaginous framework containing muscles and joints. The vibratile part of the larynx are the vocal folds which are the producers of sound.
The Lungs- They supply a stream of air which passes through the trachea.
The vocal folds- They vibrate throwing the stream of air into a series of complex vibrations. (Punt, 1979 and Henderson, 1979).”
Measles<span> virus infection is presumed to be sustained through an unbroken chain of</span>human-to-human transmission. So the term I would use is Human Reservoirs because m<span>any common infectious diseases have human reservoirs. Diseases that are transmitted from person to person without intermediaries . And measles is an example of Human reservoirs. </span>
A dangerous level of bilirubin is around 20
