The trachea, or windpipe, is a cylindrical tube extending from the lower part of the larynx to where it divides into the bronchi. The interior surface is firm and beautiful.
ORGANS WHICH GIVE RESONANT FORMS TO VOICE.
Lips,
Upper gum,
Hard palate,
Soft palate,
Tongue,
Nares.
Although the quality of the voice produced by the vocal cords of the human being cannot be distinguished from that produced by the vocal cords of the lower animals the organs which resound it give it a distinct quality.