UNIT 2. LIFE PROCESSES. INTERACTION. THE NERVIOUS SYSTEM AND THE FIVE SENSES.

SYSTEMS AND ORGANS THAT CONTROL OUR INTERACTION:

NERVOUS SYSTEM

SENSE ORGANS:

EYES:

  EARS 

 NOSE

  MOUTH (TONGUE)

 SKIN

    

MUSCULAR SYSTEM

SKELETAL SYSTEM

1. THE NERVIOUS SYSTEM AND THE FIVE SENSES

OUR EYES ARE THE ORGANS OF SIGHT

WE CAN SEE:

COLOURS

SIZES

SHAPES

PARTS OF THE EYE

THE EYEBALL HAS THREE PARTS:

PUPIL, IRIS AND RETINA

HOW DOES THE EYE WORK?

LIGHT ENTERS THE EYE THROUGH THE PUPIL

THE RETINA RECEIVES LIGHT AND SEND IT TO THE BRAIN

PROTECTION OF THE EYE

EYEBROWS  

EYEBROWS PROTECT FROM SWEAT

EYELASHES 

EYELASHES PROTECT THE EYE FROM DUST 

EYELIDS 

EYELIDS PROTECT OUR EYES FROM TOO MUCH LIGHT

AND HERE WE HAVE A WONDERFUL VIDEO ABOUT THE EYES...

OUR EARS ARE THE ORGANS OF HEARING

WE CAN HEAR:

LOUD SOUNDS

 QUITE SOUNDS

 PARTS OF THE EAR

IN THE OUTER EAR WE FIND

THE EAR AND THE EAR CANAL

IN THE MIDDLE EAR WE FIND

THE EAR DRUM AND THE THREE SMALL BONES

NAME OF THE THREE SMALL BONES

IN THE INNER EAR WE FIND

THE COCHLEA

HOW DOES THE EAR WORK?

SOUND ENTERS THE EAR AND GOES THROUGH THE EAR CANAL

THE EAR DRUM VIBRATES

THESE VIBRATIONS TRAVEL THROUGH THE THREE SMALL BONES TO THE COCHLEA

THE COCHLEA SEND THE INFORMATION TO THE BRAIN THROUGH THE NERVE

NOW, LET'S WATCH a VIDEO ABOUT THE EAR!

OUR NOSE IS THE ORGAN OF SMELL

WE CAN SMELL:

GOOD SMELLS 

BAD SMELLS 

PARTS OF THE NOSE

NOSTRILS 

NASAL CAVITY

 

OLFACTORY NERVE

 HOW DOES THE NOSE WORK?

AIR ENTERS THE NOSE AND GOES THROUGH THE NASAL CAVITY TO THE OLFACTORY AREA

 THE OLFACTORY NERVE SEND THE INFORMATION TO THE BRAIN

VIDEO ABOUT THE NOSE AND SMELLS

OUR TONGUE IS THE ORGAN OF TASTE

WE CAN TASTE 4 DIFFERENT FLAVOURS:

SWEET

SALTY

BITTER 

SOUR

PARTS OF THE TONGUE

TASTE BUDS

 VIDEO ABOUT TASTE 

OUR SKIN IS THE ORGAN OF TOUCH

WE CAN FEEL DIFFERENT THINGS:

HOT

COLD

HARD

SOFT

ROUGH

 

SMOOTH

VIDEO ABOUT THE SKIN 

THIS IS A VIDEO ABOUT THE FIVE SENSES ORGANS