The senses

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TOUCH

THE SENSES SIGHT TASTE

HEARING

They send a message through the nerveus system to our brain so we know what is happening around us and can respond

SMELL

ORGANS SKIN

EYES

TONGUE EARS

NOSE

Is the organ of sight They are the organs of hearing

Is the organ of touch

Is the organ of smell

Is the organ of taste

EYES

They are protected by our EYEBROWS,EYELASHES and EYELIDS.They stop sweat and dust getting into our eyes.

PARTS IRIS A big coloured circle at the front of the eye

PUPIL RETINA

A black circle in the middle of the iris.Light enters through it and it makes an image

It's at the back of the eye.The retina sends information to our brain,and we can see.

EARS Outer ear

Inner ear Middle ear

It's the part that is visible

There is the eardrum and three small bones

HOW DO WE HEAR? Sounds enter the outer ear and go into the middle ear.The eardrum vibrates and these vibrations travel along the three small bones to the cochlea.In the cochlea,the vibrations are turned into signals and nerves carry these signals to our brain.

NOSE TONGUE There are good and bad smells.Air enters the nose through two hole called the NOSTRILS.This air goes to the olfactory nerve and it detects smells in the air and sends this information to our brain.

It's covered in many taste buds.They identify different tastes.Nerves send information about the different tastes to our brain.These tastes can be: sweet,salty,bitter and sour

SKIN The skin on our fingertips is very sensitive.It can tell us if something is soft or hard,hot or cold,rough or smooth.Nerves send this information to our brain.

THE NERVOUS SYSTEM

It controls everything we do.The most important part of the nervous system is our brain.The brain is the organ inside our head.It sends information to different parts of our body through the nerves.It also receives information from our five senses through the nerves.

There is the cochlea


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