The stomach wall has 5 layers: 1  The innermost layer is the mucosa. 2  Next is a supporting layer called the submucosa. 3  Outside of this is the muscularis propria, a thick layer of muscle that moves and mixes the stomach contents. 4  The outer 2 layers, the subserosa and the outermost serosa, wrap the stomach.
Definitions of chest voice. 1. (music) the timbre that is characteristic of a certain range and manner of production of the human voice or of different pipe organ stops or of different musical instruments.
To get a better idea of each part of the voice, you have to recognize how each area of the voice relates to the others. 1  Chest voice: The thicker, heavier sound made in the lower part of your voice. 2  Head voice: The higher part of your singing voice. 3  Middle voice: The bridge between your chest voice and your head voice.