Secretion refers to the
A) progressive dehydration of indigestible residue.
B) input of food into the digestive tract.
C) release of substances into the lumen of the gut.
D) absorption of nutrients in the gut.
E) breakdown of food into particles small enough to cross epithelial cells.

Question

Quizplus · Accepted Answer

Secretion refers to the release of substances into the lumen of the gut, such as digestive enzymes, mucus, and ions, that aid in the process of digestion and absorption.

Secretion Refers to the