Explain the role of the vagus nerve during the cephalic phase
What will be an ideal response?
During the cephalic phase of stomach secretion, the vagus nerve creates four physiological effects. They are as follows: 1 ) The vagus nerve directly stimulates hydrogen ion release from parietal cells in the stomach. 2 ) Vagal nerve stimulation triggers the release of a peptide that stimulates G cells to release the hormone gastrin which triggers hydrogen ion secretion. 3 ) The vagus nerve stimulates a specific type of diffuse neuroendocrine system (DNES) cell to release histamine which triggers hydrogen ion secretion. 4 ) Vagal nerve stimulation inhibits somatostatin release. Somatostatin inhibits acid release.
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Indicate whether the statement is true or false
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