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.
In classical singing, its use is limited entirely to the lower part of the modal register or normal voice. Within other forms of singing, chest voice is often applied throughout the modal register. Chest timbre can add a wonderful array of sounds to a singer's vocal interpretive palette.