This is situated in the back part of the roof of the mouth. It can be lowered or raised. When it is lowered, the air stream from the lungs has access to the nasal cavity. When it is raised the passage to the nasal cavity is closed.
This is situated in the back part of the roof of the mouth. It can belowered or raised. When it is lowered, the air stream from the lungs has access tothe nasal cavity. When it is raised the passage to the nasal cavity is closed.