The mechanical and chemical receptors that control digestive activity are located ________.
A) in the walls of the tract organs
B) in the glandular tissue that surround the organ lumen
C) in the oral cavity
D) in the pons and medulla

Question

Quizplus · Accepted Answer

Mechanical and chemical receptors that control digestive activity are located in the walls of the tract organs, such as the stomach and small intestine, and they respond to stretching, osmolarity, and pH changes in the lumen. They can initiate or inhibit digestive activities, such as the secretion of digestive enzymes or the contraction of smooth muscle. Receptors in the oral cavity are involved in the initiation of the digestive reflexes, but they do not directly control digestive activity. Receptors in the brain stem, specifically the medulla and pons, receive sensory input from the digestive organs and are involved in regulating digestive activities.

The Mechanical and Chemical Receptors That Control Digestive Activity Are