Solved UPSC CDS/OTA Question
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Q · Digestive Systemmedium · 45s
The cephalic phase of digestion is mediated by:
TopicDigestive System
Question Typemultiple choice
Difficultymedium
Marking+1 / −0.33
Test Duration30 min
Step-by-Step Solution
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The cephalic phase, initiated by sight, smell, taste, or thought of food, is mediated by vagal efferent signals to stimulate gastric secretion (HCl, pepsinogen) and motility before food enters the stomach.
Final Answer: Option B - Vagus nerve stimulation