The mechanical and chemical receptors that control digestive activity are located in the oral cavity in the walls of the tract organs in the glandular tissue that lines the organ lumen in the pons and medulla

The correct answer is in the walls of the tract organs.

Explanation:

The regulation of digestive activities is carried out by intrinsic (systemic) and extrinsic nerves, as well as digestive hormones. And as in the rest of the regulatory systems, sensorial receptors, integration systems and effectors (cells that execute the regulatory response) participate. In vertebrates, this regulatory system overlaps the basic activity of the smooth muscles of the digestive system, modulating it, in addition to exerting other effects.

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