Answer :
Final answer:
The question focuses on pancreatic function and secretions. Option C regarding the pH of pancreatic juice and Option D relating to CCK's role in enzyme production and gallbladder contraction are correct. The pancreas secretes alkaline pancreatic juice and is regulated by hormones such as cholecystokinin.
Explanation:
Understanding Pancreatic Function
The question pertains to the function of the pancreas, specifically focusing on its secretions and regulatory mechanisms.Pancreatic juice plays a crucial role in digestion, and is secreted in response to various stimuli. Let's analyze each option:
- A. Stimulation of sympathetics produces rapid secretion of watery juice: This statement is incorrect. Sympathetic stimulation typically inhibits pancreatic secretion.
- B. Pancreatic acini contain HCl: This is also incorrect, as the pancreas does not secrete hydrochloric acid (HCl); rather, it secretes bicarbonate to neutralize stomach acid.
- C. Pancreatic juice has a pH of 9: This statement is correct. Pancreatic juice is alkaline due to the presence of bicarbonate, which helps to neutralize the acidity of chyme entering the small intestine.
- D. The hormone responsible for provoking the enzyme-rich pancreatic juice also causes contraction of the gallbladder: This is true - cholecystokinin (CCK) triggers the secretion of enzyme-rich pancreatic juice and also stimulates gallbladder contraction to release bile, which aids in digestion of fats.
In summary, option C and D are correct statements regarding pancreatic function, with the most accurate related to the pH level and the role of CCK.
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