State the significance/importance of the following:
$(1)$ Enterokinase
$(2)$ Gastric Inhibitory Peptide $(GIP)$

(N/A) $(1)$ Enterokinase is an enzyme secreted by the intestinal mucosa (specifically the duodenum). It plays a crucial role in the activation of pancreatic enzymes by converting inactive trypsinogen into active trypsin.
$(2)$ Gastric Inhibitory Peptide $(GIP)$ is a hormone secreted by the duodenal mucosa. Its primary function is to inhibit gastric secretion and motility,thereby regulating the digestive process.