senses+4th+grade

OUR FIVE SENSES media type="youtube" key="q1xNuU7gaAQ" width="560" height="315"
 *  Our sen__ses__ work because we have sen__sors__ all over our bodies. Each sensor can detect only the sensation it is supposed to detect. **
 *  The message goes through nerves to the brain **** where the data is interpreted and an appropriate response signal returned. **





There are five main human senses: sight, hearing, taste, touch and smell.

The five main sense organs are your eyes, ears, tongue, skin  and  [|nose].






 * SIGHT **

 Sight is the ability of the ** eye ** to detect and focus on images of visible light with photoreceptors found in the retina of the eye. ** Electrical nerve ** impulses are generated for different colors, hues and brightness.

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 * HEARING **
 * Hearing ** is a sense that detects the vibrations of sound. Mechanoreceptors in the inner **ear** in the form of tiny bones and hair-like fibers, turn motion or sound waves from the air into electrical nerve pulses that the brain can then interpret.



TASTE

The taste of food, is detected by sensory cells called **taste buds** or **papillae** located on top of the **tongue**.

There are five basic tastes:

<span style="color: #0069b8; font-family: 'Bell MT',serif; font-size: 16pt;"> //__sweet, bitter, sour, salty__// __and //umami//__

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 * [[image:pekewiki-loja/TASTE.jpe width="404" height="248"]] || taste buds or papillae

<span style="font-family: Garamond,serif; font-size: 18pt;">The sense of **touch** is activated by neural receptors such as hair follicles found in the **skin**, <span style="font-family: Garamond,serif; font-size: 18pt;">but also pressure receptors on the tongue and throat. <span style="font-family: Garamond,serif; font-size: 18pt; line-height: 0px; overflow: hidden;">
 * <span style="font-family: Garamond,serif; font-size: 18pt;">TOUCH **


 * <span style="font-family: 'Maiandra GD',sans-serif; font-size: 14pt;">SMELL **

<span style="font-family: 'Maiandra GD',sans-serif; font-size: 14pt;">There are hundreds of **olfactory receptors** or sensory cells in our nasal passage, each of which will bind itself to a different molecular smell feature. <span style="font-family: 'Maiandra GD',sans-serif; font-size: 14pt;">Around 80% of what we think is taste is actually smell. Flavour, is a combination of taste and smell perception. Test this yourself by holding your nose closed the next time you eat something, can you taste it very well? Chances are you can't.



media type="youtube" key="4-jMyDR6kSQ" width="560" height="315"

=<span style="color: #0b8033; font-family: 'Comic Sans MS',cursive; font-size: 180%;">GAMES = = = <span style="color: #0b8033; font-family: 'Comic Sans MS',cursive; font-size: 180%;">**[|light and shadows]**

<span style="color: #0b8033; font-family: 'Comic Sans MS',cursive; font-size: 180%;">[[file:IlusionesOpticasLaMinilla.pps]]
=<span style="color: #0b8033; font-family: 'Comic Sans MS',cursive; font-size: 130%;">[|five senses] =