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Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
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The neurotransmitter at the vagal nerve ending on the G-cell is:
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The correct answer is  - G-cell in the pylorus secretes gastrin. - G-cell is innervated by vagal fibers; the transmitter of these fibers is bombesin, also known as gastrin-releasing peptide (GRP). - Neurotensin and entero-oxyntin are the peptides that influence the intestinal phase of the gastric acid secretion.