Preguntas frecuentes
4- Write if the following movements are voluntary or involuntary.
-Eating your favourite sandwich.
-Shaking hands with a friend.
-Breathing.
-Blinking.
4-
UNIT 4 NUTRITION AND HEALTH
1-Write the words in the order they appear in your digestive system.
Gastric juices/ Faeces/ Lots of blood vessels/ Saliva
1-
2-Read and write.
a) Faeces are expelled through this. _____________
b) The food is divided into nutritional substances that our body needs. _____________
c) b) Our teeth are in this part. _____________
d) In this part the food is mixed with a liquid called gastric juice. __________________
e) Food circulates through this from the mouth to the stomach. _______________
2-
3-Match and write the sentences in your notebook.
a) The blood---> is a hollow muscular pump that pumps blood around the body.
b)The capillaries---> carry blood from all parts of the body back to the heart.
c) The veins---> are where the oxygen and nutrients are exchanged for carbon dioxide and waste materials.
d) The arteries---> is made up of plasma, red and white blood cells and platelets.
e) The heart---> carry blood from the heart to all parts of the body.
3-
4-Read and match.
a) It is the gas that we breathe.---->Inhalation
b) There are two in our body.---->Carbon dioxide
c) The process through which our lungs fill with air.---->Oxygen
d) When air leaves our lungs.---->Expiration
e) A gas that we eliminate from our body.---->Lungs
4-
5-Correct these wrong sentences.
a) The lungs are hard and rigid.
b) The bronchi go from the lungs to the nostrils.
c) The diaphragm relaxes when we breathe in and contract when we breathe out.
d) The litte hairs and the narow entrance at the back of the nostrils help insects and dust enter the respiratory system.
e) We have one trachea and one nostril.
5-
6-
1. Faeces are expelled.---->a) digestion
2. A long tube composed of two parts.---->b) arteries
3. It takes about two hours.----> c) oxygen
4. A gas that we need to live.----> d) kidneys
5. They take the blood from our heart to the rest of our body.----> e) anus
6. They clean our blood and make the urine.----> h) intestine
7. Where the urine is stored.----->g) bladder
6-
7-Read and tick the correct answer.
a) The process by which food substances are changed into nutritional substances is…
□ circulation □ digestion
b) The movements of breathing are…
□ inhalation and exhaling □ exhaling and excretion
c) Digestion begins in the…
□ heart □ mouth
d) Kidneys are organs of the…
□ Circulatory System □ Excretory System
e) The main organ in the Circulatory System is our…
□ arteries □ heart
7-
8-Order the sentences. How do you digest a toast?
a) The parts of the toast which my body does not need go to large intestine.
b) Then the food goes into the small intestine.
c) The toast, mixed with saliva, goes down the oesophagus.
d) I chew the toast in my mouth.
e) At last, the faeces are expelled through the anus.
f) In my stomach, the toast is mixed with gastric juice.
8-
9-Find the sentences and write them.
a) eatlotsofvegetablesandfruit.
b) dolotsofexercice.
c) brushyourteetheveryday.
d) sleepninehoursaday.
9-