The biological face of menthol

I Do 9 ,[object Object],Grade 10 B,[object Object],GebranAndrawosTweini Public School,[object Object],OUR NERVOUS SYSTEM AND the CLEVER MINT,[object Object]

An Introduction to Our Nervous SYSTEM,[object Object],[object Object],[object Object],[object Object]

2-The cell body, or "soma," acts as the primary maintenance station, conducting metabolic activities that are necessary to keep the neuron alive.,[object Object]

3- The "axon" extends from the soma ,[object Object], to carry an electrical message ,[object Object], to the muscles if it is a motor nerve fiber, or to the central nervous system ,[object Object], if it is a sensory nerve fiber. ,[object Object], Axons can be very long.,[object Object]

How can we taste freshness in our mouth ?,[object Object],[object Object],[object Object]

How can we taste freshness in our mouth ?,[object Object],1- The chemo-receptors are parts of the sensory neurons that are able to bind to the chemical particles of the food and create a nervous message to be transmitted to the brain to feel the food taste.,[object Object]

2- The thermo-receptors are parts of other sensory neurons that are able to create a nervous message when they are exposed to a change in the temperature of food then this nervous message is transmitted to the brain to realize the temperature of food.,[object Object]

The thermo-receptors receptors are also of two types: ,[object Object], a- If the receptors responsible for the cold sensation are activated, we feel the freshness in our mouth or the cold sensation.,[object Object], b- If the receptors responsible for the hot sensation , we feel the chilly flavor or hotness in our mouth. ,[object Object]

Where does freshness / cold sensation occur in the mouth ?,[object Object],Freshness occur, not only on the tongue but in the roof of the mouth and at the back of the throat. Taste buds are thought to be located in concentrated areas on the tongue.,[object Object]

How does our mouth detect the temperature of food?,[object Object],We feel temperature with two different sets of nerve cells: ,[object Object], One set called TRP-M8 will detect increases in temperature and the other set is called TRP-V1 that will detect decreases. ,[object Object],1- Similarly when the TRP-V1 cells heat up they also send a signal. But this time the nervous message reach the brain to tell it to feel hotness in that specific part o the mouth.,[object Object]

2- When the temperature decreases the TRP-M8 neurons will open sodium gates, allowing positive sodium ions to move into the cell and potassium to flow out, this creates a voltage which sends a nervous signal along the thin tail of the nerve cell towards your brain. This nervous message tells the brain to feel cold in that specific part of the mouth.,[object Object]

REFERENCES,[object Object],http://www.myonlinewellness.com/topic/cidpcauses,[object Object],http://kidshealth.org/parent/general/body_basics/brain_nervous_system.html#,[object Object],http://www.abacon.com/psychsite/dict.html,[object Object],http://www.thenakedscientists.com/HTML/content/kitchenscience/exp/does-a-mint-make-your-mouth-cold/,[object Object],http://drbenkim.com/health-benefits-mint.htm,[object Object],http://www.answers.com/topic/taste-bud,[object Object]

The biological face of menthol

The biological face of menthol

The biological face of menthol

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The biological face of menthol