The Five Senses

• These are the special tools your body uses to discover the world around it.

The Five Senses

• TOUCH•Hearing• Sight• Taste• Smell

The Five Senses

• Touch is to use your skin to have physical contact with something else.

• Nerves are like wires that relay messages to the brain

• Nerves in the skin send information about:–Pressure–Temperature–Pain–Vibration.

Touch

Touch• Information from our skin travels

up the spinal cord to the brain.• Each nerve carries information

from one part of the body.

Touch

• Some areas of the body are more sensitive to touch than others.

Touch

• This sensory map shows that the brain touch area is dedicated to some body parts more than others.

The Five Senses

• Touch• HEARING• Sight• Taste• Smell

Hearing

• Our ears allow us to understand sounds.

• The external ear captures sound, while the internal portion processes it.

Hearing

• Tiny bones in the ear create vibrations in fluid.

• These ripples are detected by delicate hairs, and signals are sent to the brain.

Hearing

• The ears also contain vestibular organs that give us our sense of balance.

• When these get messed up, you become dizzy (think of car sickness!)

Hearing Loss

Some hearing losses are congenital (born with). Others occur through disease or with the aging process.

Hearing Loss

The Five Senses

• Touch• Hearing• SIGHT• Taste• Smell

Sight

• The eye is the organ that captures light.

Sight

•Your good vision is your key to your educational development.

•Not everyone is blessed with a 20-20 vision.

MyopiaOccurs when image is falls in front of the retina due to the elongation of the eyeball.

MyopiaThey can focus on objects that are close at hand but difficulty in focusing objects that are far

Hyperopia

People who are farsighted have no difficulty in seeing far objectsIt results from the shortening of the eyeball

Hyperopia

It results from the shortening of the eyeball.Images therefore will fall behind the retina which makes it very difficult very near objects

AstigmatismIs a condition that results from abnormal curvature of the lens of the corneaThis inhibits correct focusing so that the images appear blurred

Strabismus

Is the crossing of the eyes inward or outward due to the shortening of the muscles around the eyes

AmblyopiaResults in the dimness of vision without changes in the eye structureOne eye is “the lazy eye” allows the stronger eye to dominate, thus it become weakened.

Color Blindness

Protecting your Vision

Protecting your Vision

• Sunglasses protect your eyes from the sun’s harmful UV rays.

Vision Loss• Braille is a special form of writing

for those who are blind, where people “read” using touch.

The Five Senses

• Touch• Hearing• Sight• TASTE• Smell

Taste• The tongue is the organ that

allows us to taste.• Taste buds contain the nerves

that send signals to the brain.

Taste

• Different areas of the tongue detect certain types of taste

Tongue Piercing

• Piercing increases the risk of infection.

• Metal piercings can also damage your teeth.

The Five Senses

• Touch• Hearing• Sight• Taste• SMELL

Smell

•The nose contains the nerves that allow us to smell.

Smell

Taste and Smell

• The senses of taste and smell are closely related.

• For example, foods sometimes taste different when we have colds and stuffed up noses.

The Brain

The Five Senses

• Our senses let us explore our world.

• It is important that we protect them.

Any Questions?