What is the pancreas? Mention the major secretions of the pancreas that are helpful in digestion.

(N/A) The pancreas is a compound (both exocrine and endocrine) elongated organ situated between the limbs of the '$C$'-shaped duodenum.
$1$. Exocrine function: The exocrine portion secretes an alkaline pancreatic juice containing enzymes.
$2$. Major secretions helpful in digestion include:
- Trypsinogen and Chymotrypsinogen: Inactive enzymes that are activated to digest proteins.
- Procarboxypeptidase: Activated to digest proteins.
- Pancreatic Amylase: Breaks down carbohydrates into disaccharides.
- Pancreatic Lipases: Break down fats into fatty acids and glycerol.
- Nucleases: Break down nucleic acids into nucleotides.