It is the upper part of the windpipe. It protects the vocal cords.
The speech sounds are produced mainly based on articulators and points of
articulation. The articulators are movable and points of articulation are stationary.
The articulators are lower lip, tip of the tongue, and blade of the tongue, front of
the tongue and back of the tongue. The points of articulation are upper lip, teeth,
teeth ridge, hard palate and soft palate.