There are 3 major proteolytic enzymes produced naturally in our digestive tract.
Explanation:
The 3 enzymes are
Pepsin
It is an endo peptidase, which breaks the proteins into smaller polypeptides. It is produced by chief cells of stomach lining.
2. Trypsin
Trypsin acts on the proteins in small intestine. It is also called as proteinase. It is produced in the inactive form which is trypsinogen and is produced by the pancreas.
It acts on basic amino acids like arginine and lysine.
3. Chymotrypsin
It breaks down proteins into individual amino acids inside small intestine. It specifically breaks aromatic amino acids like tryptophan etc.
So basically the auditory tube is receptors of the sounds or which makes sound turn into messages which the brain can identify. I'm gonna go with cochlea
