Why is the pancreas both an endocrine and an exocrine gland?
A. It secretes insulin through the pancreatic duct and secretin into the blood.
B. It secretes bile through the pancreatic duct and insulin into the blood.
C. It secretes insulin through the pancreatic duct and bile into the blood.
D. It secretes pancreatic juice through the pancreatic duct and insulin into the blood.
E. It secretes secretin through the pancreatic duct and insulin into the blood.
Answer: D
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