Receptors in your stomach that determine when food enters because the ph changes would be classified as

Answer: Chemoreceptors

Explanation: Chemoreceptors is a sense organ, or one of its cells (such as those for the sense of taste or smell), that can respond to a chemical stimulus; a chemosensor. Chemosensors converts chemical signals and generates biological signals. In this case, a taste receptor is used which is the tongue.

The two main classes of receptors are direct chemoreceptor (taste) and distance chemoreceptor (olfactory).