Among the following options, select the accurate statement describing the primary digestive function of enterokinase:
Activation of zymogens into their active forms to facilitate digestion.
Hydrolysis of complex carbohydrates into simpler sugars.
Facilitation of bile secretion and emulsification of fats.
Inhibition of gastric acid secretion to maintain pH balance in the stomach.
Enterokinase, also known as enteropeptidase, is an enzyme produced by the cells lining the small intestine. Its primary function is to activate zymogens (inactive enzyme precursors) into their active forms to initiate and facilitate the process of digestion.
One of the crucial zymogens that enterokinase activates is trypsinogen, which is produced by the pancreas. Enterokinase converts trypsinogen into its active form, trypsin. Once activated, trypsin plays a central role in protein digestion by further activating other pancreatic zymogens such as chymotrypsinogen and procarboxypeptidases. This cascade of enzyme activations allows for the efficient breakdown of proteins into smaller peptides and amino acids, which can be absorbed by the body. Therefore, the correct answer is option 1.