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.

Anatomy & Physiology

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Anatomy & Physiology

When the renal tubules secrete hydrogen ions into the tubular fluid, they ________ at the same time.

A. reabsorb sodium B. reabsorb potassium C. secrete sodium D. secrete potassium E. secrete chloride

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The two organ systems involved in providing oxygen to the body and removing carbon dioxide are the

A. cardiovascular and respiratory. B. reproductive and nervous. C. integumentary and muscular. D. respiratory and digestive.

Anatomy & Physiology

An EPP is a graded potential

Indicate whether the statement is true or false

Anatomy & Physiology