Senses of smell and taste
SENSES OF SMELL AND TASTE ARE CHEMO-SENSES
and belong to the chemical-sensorial system. Processes of smell and taste are complex. These start when molecules are released through substances that stimulate sensorial cells in the nose, mouth or throat.
Olfactory nervous cells are stimulated by odors. These cells are in the tissue located in the upper internal part of the nose and are directly connected to the brain.
Taste nervous cells are stimulated by the flavor of food and beverages.
These cells are located in the taste papillae in mouth and throat. These sensorial cells transfer messages to the brain through nerves, where specific smells and tastes are identified. Another chemo-sensorial process, called common chemical sense, also contributes to the taste and smell. These cells alert the brain regarding sensations such as heat (as in hot peppers) or cold (like menthol).