How Do We Experience Daily Living Throughout Our Senses?

1. Sight Taste Smell How Do We Experience Daily LivingThroughout Our Senses? Sound Touch Lucia, Robert, Sharif, Isabella, Laurette and Juliette

2. A Day At the Beach 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 building sand castles. There are birds flying over the water. While eating vanilla ice cream, you hear the crashing of the waves, and you smell the salty air. What senses are you using?

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

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

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

6. Taste- The Tongue There are five different types of taste: • Salty- french fries and chips • Sweet- cotton candy and strawberries • Sour- shock tarts and lemons • Bitter- black licorice and radishes • Umami- specific taste in meat

7. Smell – The Nose Everything you smell gives off molecules, they float through the air and into your nose. Humans smell with their brains. The nose is how we take in the air but when the air reaches the olfactory bulb located in the front of the brain, this is where the odors are identified. Your nose lets you smell and it is a big part of why you are able to taste things.

8. Smell-The Nose The Olfactory Receptive neurons can detect several molecules and pass the information to the brain by using the olfactory neurons. Smells are detected by special olfactory receptors which are encoded by a different gene. Esters are organic molecules that evaporate from fruit or flowers.

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

10. Sound-the ear • Outer ear transmits vibration to the inner ear. • Inner ear has a snail shaped like thing called the cochlea covered in nerve fibers • It reacts to the vibration in the auditory nerves • Humans can hear frequencies from 16 cycles per second

11. Sound-the ear • When an object moves it sends sound waves • These waves are then passed into your ear canal by the outer ear • The vibrations will go to your middle ear then hit the eardrum • This will set off a chain reaction of vibrations • Humans can generate sound between 20 hours to 20 kilo hours • That’s 20 and 20,000 cycles per second

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

13. 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. • 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:

14. Fun Facts • You have more pain nerve endings than any other type • Rattlesnakes use their skin to feel the body heat of other animals • All babies are colorblind when they are born • Your eyes are composed of more than 2 million working parts • Insects have the best sense of taste • Fish can taste with their fins, tails, and mouth • Some people can’t smell skunks, while others can’t smell freesias • Astronauts in space tend to lose their sense of smell and taste (Because of the lack of gravity, their sinuses fill up with fluid, causing stuffiness similar to a cold) • Animals hear more sounds than humans • Children have more sensitive ears than adults

15. Resources • 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.com • www.newworldencyclopedia.com • www.wisconline.com • www.pamt.org • www.funfactz.com • www.converyoptometrists.com/facts.aspx • www.en.wikipedia.org/wiki/human_eye • www.en.wikipedia.org/wiki/cornea • Natural History Museum

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