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5 senses

The five senses primary 3
by

Colegio Montepinar

on 8 October 2014

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Transcript of 5 senses

THE 5 SENSES
we are able to relate to what is around us through our senses.
This means that we can recognise and respond to changes.
How do we relate to what is around us?
The
sense organs
receive information
.
The
locomotor system
allows us to move
The
nervous system
receives information from the senses and chooses the best response.
I am cold
Look for
warm clothes
Well done!
What does our nervous system do?










The
nervous system
controls everything that happens in our bodies. It is made up of:
The
brain
is inside the skull. It is the organ that receives and responds to information about what is happening inside and outside our body.
There are
nerves
all over our body.
They can carry messages to and from the brain and the rest of the body.
The
spinal cord
How does our nervous system work?
We have five senses:
SIGHT
We carry the messages from and to the brain
The
eyes
are the organs of
sight
. We use our eyes to identify
colour
,
shape
,
size
and
distance
. The eyes has different parts
:
The
iris
is the coloured

circle in the middle of the eye.
The
pupil
is the black hole in the middle of the iris
The
lens
The
retina
The
optic nerve
We see an object because light bounces off it.
The light goes into the eye through the pupil. The lens focuses the light and makes an image of the object on the retina. This is like the screen at the back of the eye. The retina is connected to the optic nerve and this carries the message to the brain. If there is no light, we cannot see!
HEARING
The
ears
are organs of
hearing
.
We use our ears to hear the sounds. The ear has three parts
The
outer ear
:
The
ear
.
The
outer ear canal
: has small hairs and wax. They stop dust from going in.
The
middle ear
:
The
ear drum
.
Three little bones:
The hammer
,
the anvil
, and
the stirrup
.
The
inner ear
:
The
cochlea
.
The
auditory nerve
A sound goes into the ear, down the outer ear canal and makes the ear drum vibrate.
The vibrations go to the small bones of the middle ear. These pass the vibrations on the cochlea in the inner ear. The cochlea is connected to the auditory nerve.
The auditory nerve carries the message to the brain.

smell
Olfactory nerve
Nostrils
Nerve endings
The smell goes into the nose through the nostrils .
Inside the nostrils there are small hairs and mucus to stop dust from going in.
The smell is picked up bu nerve endings connected to the olfactory nerve which carries the message to the brain.
TASTE
Taste buds
The
nose
is the organ of
smell
.
We use our noses to identify different smells.
The organ of
taste
is the
tongue
. The tongue is inside the mouth. We use our tongue to identify different flavours.

All over the tongue are taste buds. These are nerve endings. They pick up different flavours. The four basic flavours are: Sweet, sour, salty and bitter.
The taste buds are connected to the taste nerves. They carry messages to the brain.

TOUCH
The
skin
is the organ of
touch
. We use our skin to identify if something is hot or cold, soft or hard, smooth or rough.
Our body is covered in skin. Every part of our skin has nerve endings that pick up information. These nerves carry messages to the brain.
In some parts of our skin we have more nerve endings. These are the most sensitive parts, like the palms of our hands or the soles of our feet.
http://www.childrensuniversity.manchester.ac.uk/interactives/science/brainandsenses/smellandtaste/
http://www.childrensuniversity.manchester.ac.uk/interactives/science/brainandsenses/smellandtaste/
http://www.childrensuniversity.manchester.ac.uk/interactives/science/brainandsenses/ear/
http://www.childrensuniversity.manchester.ac.uk/interactives/science/brainandsenses/eye/
http://www.childrensuniversity.manchester.ac.uk/interactives/science/brainandsenses/sensitivity/
http://www.childrensuniversity.manchester.ac.uk/interactives/science/brainandsenses/connections/
The
Cornea
THE BODY SYSTEMS
THE CIRCULATORY SYSTEM
Our body is a very complex machine. It has a lot of parts that works together. The most important parts are called
Organs
and they form the different
Body systems
.
Full transcript