THE BODY

3º SCIENCE

THE ORGANS

THE BRAIN

THE BRAIN

- It is inside your head.

THE BRAIN

- It allows you to think and learn.

THE BRAIN- The brain is part of the nervous system.

- The brain receives impulses from your nerves, and respond to pain and other stimulation.

THE HEART

THE HEART

- It is a muscle.- It is inside your chest protected by your

rib cage.

THE HEART

- It pumps blood to your body.

THE HEART- The heart is at the centre of your circulatory system.

LUNGS

LUNGS

- We have two lungs.- They are inside your chest on either

side of the heart.

LUNGS

- They allow you to breathe.

LUNGS

- The primary functions of your lungs are to take oxygen from the air you breathe to your body while taking away carbon dioxide.

LUNGS- Lungs are part of your respiratory system.

THE STOMACH

THE STOMACH

- It is inside your tummy.

THE STOMACH

- It helps you to make the digestion (allows your body to get the nutrients and energy it needs from the food you eat).

THE INTESTINES

- The intestines are part of the digestive system of the body.

- They take up all the nutrients that you need to your body and also remove wastes from the body.

- The stomach and the intestines are part of your digestive system.

OTHER ORGANS

THE LIVER

It has got many functions. For example:

- It cleans your blood.- It helps to make the digestion

KIDNEYS

They have got many functions. For example:

- They clean your blood.- They take waste out of the blood and make

urine (pee)

BRAIN It allows you to think and learn.

LUNGS They allow you to breathe.

HEART It pumps blood to your body.

STOMACH It helps you to make the digestion.

INTESTINES They take up all the nutrients that you need to your body and also remove

wastes from the body

LIVER It helps to make the digestion and clean the blood.

KIDNEYS They clean your blood and take waste out of the blood and make urine.

BRAIN

LUNGS

LIVER

HEART

STOMACH

KIDNEYSINTESTINES

INTESTINES

BONES

BONES

• Bones are HARD and RIGID.

• They are STRONG and they don’t bend.

BONES

• BONES are LIVING THINGS.

They grow as your body grows.

TYPES OF BONES

There are 3 types of bones:

LONG BONE

SHORT BONE

FLAT BONE

JOINTS

Bones join together at joints. These are 2 types of joints:

Fixed joints

The bones don´t move.

Moveable joints

The bones move in one direction. These joints are held together by ligaments.

EXAMPLES OF JOINTSFixed joints

SKULL

Moveable joints

KNEEELBOWANKLEWRISTEtc….

THESKELETON

THE SKELETON

• The skeleton is made up of all the bones in our body.

• An adult has 206 bones, but a baby more.

• The skeleton has two functions: It supports our body and it protects the organs.

SKULLMANDIBLE

CLAVICLE

RIBSHUMERUS

ULNA

RADIUSPELVIS

FEMUR PATELLA

TIBIA

FIBULA PHALANGES

SCAPULA

VERTEBRALCOLUMN(SPINE)

- 1 VERTEBRAE

MUSCLES

MUSCLES

• Muscles are SOFT when relaxed.

• Most muscles are connected to bones.

MUSCLES

• They move our bones by contracting and relaxing.

• When muscles contract, they get shorter, and when they relax, they get longer.

MUSCLES

• The biceps and the triceps work together:- When the biceps contract, the triceps relax.- When the triceps contract, the biceps relax.

MUSCLES

• There are over 600 muscles in our body.

TYPES OF MUSCLES

There are 2 types of muscles:

VOLUNTARY MUSCLES

INVOLUNTARYMUSCLES

TYPES OF MUSCLES

VOLUNTARY MUSCLESWe can move voluntary muscles when we want.

INVOLUNTARY MUSCLESWe can’t control involuntary muscles.They move automatically.

PECTORALS

ABDOMINALS

BICEPS

TRICEPS

QUADRICEPS

CALFMUSCLES

CHILDHOOD

CHILDHOOD

• Babies drink milk from their mother.

• Their milk teeth appear. At about 6 years they start to fall out and permanent teeth grow.

CHILDHOOD

• They learn to walk and talk.• From 3 to 9 years, children grow very fast.

ADOLESCENCE

ADOLESCENCE

• Teenagers grow very fast.• Your body prepares to become an adult.

ADOLESCENCE

• Boys grow facial and body hair and their voices get deeper.

• Girls develop breasts.

ADULTHOOD

ADULTHOOD

• Your body doesn’t change much.• Many adults have children.

ADULTHOOD

• They look after their home and go out to work.

OLD AGE

OLD AGE

• Old people have wrinkles.• Their hair goes grey.

OLD AGE

• They bones become fragile and their muscles grow weaker.

• Most old people don’t work.

CHILDHOOD ADOLESCENCE ADULTHOOD OLD AGE