What statement does not pertain to the cephalic phase of gastric secretion? (it controls the rate at which chyme enters the small intestine., it is triggered by sensory input, such as sight, as well as mental input, such as thinking about food., mucous cells, chief cells, parietal cells, and g cells receive signals through the submucosal plexus., it usually lasts only a few

It controls the rate at which chyme enters the small intestine

Explanation:

Cephalic phase is one of the phase of gastric secretion (other two are gastric phase and intestinal phase) that begins even before food enters the oral cavity. Thinking of food stimulates the release of gastric juice via  parasympathetic nervous system). Food that enters the stomach also stimulates the secretion of gastric juice by parietal cells. Partially digested food directly activates  G cells (Enteroendocrine cells) to secrete gastrin which also stimulates the release of gastric juice.

they deliver oxygen to the blood