Question

practice 11
what are the three main phases of digestion?
buccal, pharyngeal, and esophageal.
excretion, secretion, and absorption.
cephalic, gastric, and intestinal.
mastication, churning, and absorption.
oral, esophageal, and rectal.

Explanation:

The three main phases of digestion are the cephalic phase (triggered by sensory input like sight/smell of food), the gastric phase (occurs in the stomach when food arrives), and the intestinal phase (happens in the small intestine as chyme enters). The other options either list parts of the digestive tract (like buccal, pharyngeal, esophageal which are anatomical regions not phases), or processes (excretion is not a digestion phase, mastication is a mechanical process in the oral cavity).

Answer:

Cephalic, gastric, and intestinal.