Chemoreceptors

We, as humans, have 5 senses. Sight, sound, touch, and the two that I will be talking about today, smell and taste. Smell and taste are the only two senses we use that requires a chemical. Chemoreceptors, also referred to as chemosenses, require a chemical stimulus in the environment. The tongue has these little bumps on it called tastebuds. Each bump holds several nerves that are chemical sensitive. There are different spots on the tongue that can taste different chemicals. The tip of the tongue tastes sweet, The tip and front sides tastes salt, the back sides taste sour, and the back tastes bitter. The nose has olfactory (smell) receptors high in the nose, right between the eyes. There is mucous which must interact with the given scent. This scent is then precieved by the brain which then says "this is sweet" or "this smells like flowers". Taste and smell are both senses that allow for survival, way back when. Now that we live in a community that doesn't require taste and smell as vital senses, we don't truly need them, therefore they are now a luxury. Auroma therapy is a large luxury that can help sooth the mind and body both. Sweet foods are what make us want to eat more.