How Do We Experience Daily How Do We Experience Daily LivingLiving

Throughout Our Senses?Throughout Our Senses?

Lucia, Robert, Sharif, Isabella, Laurette and Juliette

A Day At the BeachA Day At the BeachYou feel the warm sand beneath your toes. As the tide comes in You feel the warm sand beneath your toes. As the tide comes in

and out, the water cools you off. There are kids running around and out, the water cools you off. There are kids running around and building sand castles. There are birds flying over the water. and building sand castles. There are birds flying over the water. While eating vanilla ice cream, you hear the crashing of the While eating vanilla ice cream, you hear the crashing of the waves, and you smell the salty air. waves, and you smell the salty air.

What senses are you using?

Sight- The EyeSight- The Eye

The human eye allows vision. Rod and The human eye allows vision. Rod and cone cells allow light perception and cone cells allow light perception and vision including the difference between vision including the difference between colors. The colors. The retinaretina controls the size of the controls the size of the pupil. The human eye can distinguish pupil. The human eye can distinguish about 10 million different colors.about 10 million different colors.

Sight- The EyeSight- The Eye

Your Your eyes are the eyes are the most most complex complex organs you organs you posses posses except for except for your brain. your brain. The The corneacornea focuses the focuses the light into a light into a sharp image sharp image on the back on the back of the eye.of the eye.

It also covers the iris, pupil, and the anterior chamber. The iris is a thin, circular structure in the eye. The retina is a tissue at the back of the eye that’s sensitive to light energy.

Taste- The TongueTaste- The Tongue

The organs of taste are the taste The organs of taste are the taste buds. Taste buds are found on the buds. Taste buds are found on the roof of your mouth and the side of roof of your mouth and the side of your mouth. We have ten thousand your mouth. We have ten thousand taste buds.taste buds.

Taste- The Tongue Taste- The Tongue

There are five different types of taste:There are five different types of taste:

• Salty- french fries and chipsSalty- french fries and chips

• Sweet- cotton candy and Sweet- cotton candy and

strawberries strawberries

• Sour- shock tarts and Sour- shock tarts and

lemons lemons

• Bitter- black licorice and Bitter- black licorice and

radishes radishes

• Umami- specific taste in Umami- specific taste in

meatmeat

Smell – The NoseSmell – The Nose Everything you smell gives off Everything you smell gives off molecules, they float through the molecules, they float through the air and into your nose. Humans air and into your nose. Humans smell with their brains. The nose smell with their brains. The nose is how we take in the air but when is how we take in the air but when the air reaches the olfactory bulb the air reaches the olfactory bulb located in the front of the brain, located in the front of the brain,

this is where the odors this is where the odors are identified. Your nose are identified. Your nose lets you smell and it is a lets you smell and it is a big part of why you are big part of why you are able to taste things.able to taste things.

Smell-The NoseSmell-The Nose The Olfactory Receptive The Olfactory Receptive neurons can detect several neurons can detect several molecules and pass the molecules and pass the information to the brain by information to the brain by using the olfactory neurons. using the olfactory neurons. Smells are detected by special Smells are detected by special olfactory receptors which are olfactory receptors which are encoded by a different gene. encoded by a different gene.

Esters are organic molecules that evaporate from fruit or flowers.

Smell – The NoseSmell – The Nose People who cannot smell have a condition People who cannot smell have a condition called Ansomia. Your smell print is called Ansomia. Your smell print is determined by the number of genes, the determined by the number of genes, the environment, diet, medicines, your environment, diet, medicines, your emotional state, your skin type and emotional state, your skin type and weather. weather.

Sound-the earSound-the ear

• Outer ear transmits vibration to the Outer ear transmits vibration to the inner ear.inner ear.

• Inner ear has a snail shaped like thing Inner ear has a snail shaped like thing called the cochlea covered in nerve called the cochlea covered in nerve fibersfibers

• It reacts to the vibration in the It reacts to the vibration in the auditory nervesauditory nerves

• Humans can hear frequencies from 16 Humans can hear frequencies from 16 cycles per secondcycles per second

Sound-the earSound-the ear

• When an object moves it sends sound wavesWhen an object moves it sends sound waves• These waves are then passed into your ear These waves are then passed into your ear

canal by the outer earcanal by the outer ear• The vibrations will go to your middle ear then The vibrations will go to your middle ear then

hit the eardrumhit the eardrum• This will set off a chain reaction of vibrationsThis will set off a chain reaction of vibrations• Humans can generate sound between 20 Humans can generate sound between 20

hours to 20 kilo hourshours to 20 kilo hours• That’s 20 and 20,000 cycles per secondThat’s 20 and 20,000 cycles per second

Touch-The SkinTouch-The SkinWhile the other four senses While the other four senses are located in a single area are located in a single area of your body, touch is found of your body, touch is found all over. Your body has all over. Your body has about twenty different touch about twenty different touch receptors but for the most receptors but for the most part, they specialize in part, they specialize in experiencing hot, cold, pain, experiencing hot, cold, pain, or pressure. or pressure. Touch is based on nerve

receptors in the skin that send electrical messages through the CNS to the brain, where feelings are registered. Touch is very important for survival, but it is also a way of introducing yourself and or showing respect, friendship, love, concern, encouragement, congratulations, or appreciation.

• Learning• Language processing• Problem solving • Physical recovery speeds•Growth• Emotional stability

Since touch develops in embryos before all other senses, it is the main way in which infants gain information about their environment and form close relationships with their parents. Loving and warm touch (such as cuddling a baby) enhances their:

You have more pain receptors than any other receptor in your body, which proves how vital touch is to life. When put in dangerous or scary situations, people take action to protect themselves from pain.

Fun FactsFun Facts• You have more pain nerve endings than any other typeYou have more pain nerve endings than any other type

• Rattlesnakes use their skin to feel the body heat of other Rattlesnakes use their skin to feel the body heat of other animalsanimals

• All babies are colorblind when they are bornAll babies are colorblind when they are born

• Your eyes are composed of more than 2 million working Your eyes are composed of more than 2 million working partsparts

• Insects have the best sense of tasteInsects have the best sense of taste

• Fish can taste with their fins, tails, and mouthFish can taste with their fins, tails, and mouth

• Some people can’t smell skunks, while others can’t smell Some people can’t smell skunks, while others can’t smell freesiasfreesias

• Astronauts in space tend to lose their sense of smell and Astronauts in space tend to lose their sense of smell and taste (Because of the lack of gravity, their sinuses fill up taste (Because of the lack of gravity, their sinuses fill up with fluid, causing stuffiness similar to a cold)with fluid, causing stuffiness similar to a cold)

• Animals hear more sounds than humansAnimals hear more sounds than humans

• Children have more sensitive ears than adultsChildren have more sensitive ears than adults

ResourcesResources• www.librarythinkquest.org/3750/touch/touch.html

• www.faqs.org/health/topics/3/touch.html

• www.serendip.brynmawr.edu/exchange/node/4356

• www.thesenseofsmell.org

• www.librarythinkquest.org/3750/smell/smell.html

• www.senseofsmellinstitute.com

• www.wisegeek.com

• www.discoverhealth.com

• www.kidshealth.org

• www.thesoslab.com

• www.thinkquest.comwww.thinkquest.com

• www.newworldencyclopedia.comwww.newworldencyclopedia.com

• www.wisconline.comwww.wisconline.com

• www.pamt.orgwww.pamt.org

• www.funfactz.comwww.funfactz.com

• www.converyoptometrists.com/facts.aspxwww.converyoptometrists.com/facts.aspx

• www.en.wikipedia.org/wiki/human_eyewww.en.wikipedia.org/wiki/human_eye

• www.en.wikipedia.org/wiki/corneawww.en.wikipedia.org/wiki/cornea

• Natural History MuseumNatural History Museum