This presentation is for my students.

1. INTERACTION
- SENSES.

2. INTERACTION
 The interacion function enables living
things to receive information and respond
to it.

3. What are the five
senses?

4. Our sense organs receive information
from our surroundings. This is called
STIMULUS.
We use our
senses to
detect
stimuli
around us
and send
messages
to the brain.

5. THE SENSE OF SIGHT
 Eyes are the organs of the sense of
sight.
This sense gives us information on things
colour, size and shape.

6. … the eyelids, which
protect the eyes from
light…
… and the lacrimal
glands, which keep
the eyes moist.
The protective organs are
eyebrows and eyelashes,
which protect the eye from
sweat and dust…

7. EYEBALL
The eyeball is made
up of the, iris, which
is the coloured circle
in the centre of the
eye…
… and the
retina, a layer
that covers the
inside of the
eyeball and
which receives
information.
… the pupil, the
opening through
which light comen
in…

8. THE SENSE OF HEARING
The organ of the sense of
hearing is the ear.
- This sense allows us to pick
up sounds.

13. The cochlea
turns the
sound
vibrations
into signals

15.  The outer ear: are
made up of the ear
and the inner ear
canal.
 The middle ear: are
made up of the
eardrum and the
ossicle bones.
 The inner ear: are
made up of the
cochlea and the
auditory nerve.

17. THE SENSE OF SMELL
The sense organ that allows us
to smell is the nose.
The sense of the smell allows
us to smell things.

18. olfactory
bulb
Air comes into
the nasal
septum
through the
nostrils.
The nasal septum
divides the nasal
cavity into 2 parts.
Gets information
on the smell and
sends it to the
brain through
the olfactory
nerve.

19. THE SENSE OF TASTE
 The tongue is the taste sense
organ.
 The taste sense allows us to
make out the flavour of things.
 In order to taste the flavour of
food, the tongue needs to mix
food with saliva.