Answer :
Pancreatic juice secretion is stimulated by parasympathetic activity, while sympathetic activity inhibits pancreatic juice secretion.
The parasympathetic nervous system promotes digestion, while the sympathetic nervous system suppresses digestive processes during times of stress or danger. Pancreatic juice secretion is also stimulated by vagal activity, while secretin activity inhibits pancreatic juice secretion.
Hence, the answers to the blanks are- Parasympathetic and sympathetic nervous systems.
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