NS4. UNIT2: HEALTHY LIVING

 

UNIT 2: HEALTHY LIVING

2.1      The five senses

 

-       The five senses are: sight, touch, hearing, smell and taste.

 

·      SIGHT

-         Light enters the eye and forms an upside-down image on the  retina. The

optic nerve then sends this image to the brain.

 

·      TOUCH

 

-Sensory nerves in the skin send information to the brain about how  something feels.

·      HEARING

-         Sound waves enter your  ears and the liquid in the cochlea

 

 moves and sends signals to the brain.

 

·      SMELL

 

-         Air enters your nose through the nose and the olfatory  nerves transmit the information to the brain.

·      TASTE

-         Your tongue contains many taste buds to detect different tastes .

 

 

2.2.-The nervious system

 

-         The nervious system controls everything you do. It receives information from the sense organs.

-         It is made up of the brain, the spinal cord and the nerves.

-         The brain is made up of the cerebellum, the brain stem and the cerebrum.

 

2.3.-The locomotor system

 

-         The locomotor system is made up of the skeleton, joints and muscles.

-         The skeleton is made up of the skull, the torso and the limbs.

-         The bones and joints are connected by ligaments.

-         The skeleton has two functions: to support the body and to protect internal organs.

-         Tendons connect muscles and bones.

-         Muscles contract and relax.

 

2.4.-Proper posture

 

-         Proper posture helps our locomotor system.

-         Do not cross your legs or feet when you sit down.

-         Your school bag must not weigh more than three kilogram.

2.5 Healthy eating

 

-         You have to eat a balanced diet.

-         There are 5 groups:

 

1.-Vitamines and minerals ( Fruit and vegetables). They are full of vitamins, minerals, antioxidants and fibre.

 2.-Carbohydrates ( bread, pasta, cereals and potatoes). They contain proteins and carbohydrates

3.-Fats ( olive oil, sedes, avocados and nuts). They contain healthy fats and oils.

4.- Proteins ( meat, fish, eggs and pulses). They contain proteins and iron

5.- Diary products ( milk, yogurt, cheese). They contein proteins and calcium.

 

 

-         If you eat unhealthy food you do not eat a balanced diet.

 

 

2.6.-Healthy habits

 

-         You can have a healthy lifestyle with healthy habits such as:

 

                                               1.- Going for a walk.

                                               2.- Talking to Friends.

                                               3.- Playing outside.

                                               4.- Eating vegetables.

                                               5.- Organizing your time.