Which statement is true about the role of the pancreas?

a. The exocrine cells of the pancreas secrete insulin andglucagon into the duodenum.

b. The endocrine cells of the pancreas secrete zymogens into theduodenum.

c. The exocrine cells of the pancreas secrete zymogens into theblood.

d. The endocrine cells of the pancreas secrete insulin andglucagon into the blood.

Which statement is true about the role of the autonomic nervoussystem in controlling the digestive process?

a. Parasympathetic neurons or the smell of food can activate thecephalic phase of digestion, leading to increased gastricsecretions.

b. Sympathetic neurons or the smell of food can activate thecephalic phase of digestion, leading to decreased gastricsecretions.

c. Parasympathetic neurons or the smell of food can activate thecephalic phase of digestion, leading to decreased gastricsecretions.

d. Sympathetic neurons or the smell of food can activate thecephalic phase of digestion, leading to increased gastricsecretions.

Which statement about regulation of the digestive process iscorrect?

a. Beta cells of the pancreas have receptors for GIP whichproduce insulin when stimulated, causing an increase in levels ofblood glucose.

b. Beta cells of the pancreas have receptors for CCK whichproduce insulin when stimulated, causing an increase in levels ofblood glucose.

c. Beta cells of the pancreas have receptors for CCK whichproduce insulin when stimulated, causing a decrease in levels ofblood glucose.

d. Beta cells of the pancreas have receptors for GIP whichproduce insulin when stimulated, causing a decrease in levels ofblood glucose.