Question

If a fatty meal has been ingested, the liver and gallbladder need to be alerted about the need for bile. the receptors that are responsible for sensing the fat in the ingested food are refered to as

Answer 1

The answer would be chemoreceptor.
Chemoreceptors are a group of the receptor that could detect a specific chemical substance. The substance varies, it could be oxygen, carbon dioxide, sugar, amino acid or lipids. The chemoreceptor that detects fatty meal should detect the lipids in the stomach.