outline the structure of the human larynx and the associated structures that assist the production of sound
The larynx or voice box lies directly below the tongue and soft palate. Inside the larynx are the vocal cords, which consist of muscles which can adjust pitch by altering their position and tension. Together, the larynx, tongue and hard and soft palate make speech possible. When air passes over the vocal cords in the larynx, they produce sounds that can be altered by the tongue, together with the hard and soft palate, the teeth and the lips.
Here is a useful starting point, Vocal Sound Production HyperPhysics, R Nave, Department of Physics and Astronomy, Georgia State University, Georgia, USA.