GENERAL HISTOLOGY

Detailed explanation-1: -It breaks down proteins into smaller peptides and amino acids that can be easily absorbed in the small intestine. Specific cells within the gastric lining, known as chief cells, release pepsin in an inactive form, or zymogen form, called pepsinogen.

Detailed explanation-2: -The 4 main digestive enzymes are carbohydrases, proteases, lipases, and nucleases.

Detailed explanation-3: -In the presence of acid, both forms of pepsinogen are converted to pepsin by removal of a short amino-terminal peptide. Pepsin is an endopeptidase that preferentially hydrolyzes peptide linkages where one of the amino acids is aromatic and accounts for approximately 20% of the protein digestion in the GI tract.