Natural Science 2 ESO.
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Multicellular livings had to bring nutrients to all the cells in the body and, at the same time, to take away waste materials. So all multicellular livings have some systems specialised in the
function of nutrition. Those
systems are:
Digestive system, the system that changes food into a form that can be used by the body.
Respiratory system, the system that brings in oxygen for the body
to use and take away carbon dioxide.
Circulatory system, the system that carries gas, nutrients and waste to and from all cells through the body.
Excretory system, the system that excretes waste.
We need all of them. Really? Why?
Let’s find it out ! Material creat per Marian Ruiz Simón- Projecte AICLE- Escola Túrbula 2014-15
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Matching: draw a line from words to their definitions.
1) The System of organs that produce, collect, and eliminate urine.
A) Circulatory System
B) Digestive System
2) The System of organs and glands responsible for the ingestion, digestion, and absorption of food.
C) Respiratory System 3) The System that circulates blood through the body D) Urinary System
4) The System of organs involved in the intake and exchange of oxygen and carbon dioxide between the body and the environment
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Classify these organs in the chart Stomach
Trachea Kidneys
Veins
Arteries Liver
Lungs
Intestine
Heart
Capillaries
Bronchi
Bladder
SYSTEMS AND ORGANS THAT TAKE PART IN NUTRITION Digestive
Respiratory
Excretory
Circulatory
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Complete the text: Nutrition is _________________. Therse are: Digestion,__________, ____________ and ____________. With circulation the blood distributes the ______________ and __________that we need for every part of our body. When the blood travels through the small intestine, it picks up ____________. When the blood passes through the lungs, it picks up _____________ and removes ____________. The __________ filter the blood. ________________ are eliminated.
Use the following words:
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When we breathe, the body takes in the oxygen that it needs and removes the carbon dioxide that it doesn't need. takes out Warms and filters air as it is inhaled Passageway for air that leads to trachea
( windpipe) through which air passes on the way to the lungs and is kept open by tiny rings of cartilage. It has fine hairs called “cilia” that filter air before it reaches the lungs.
Two tubes at the end of the trachea, each lead to a lung.
The voice box, where vocal cords are located.
A network of smaller tubes leading from the bronchi into the lung and finally to air sacs. The functional respiratory units in lung, where oxygen carbon dioxide exchanged
The large, thin muscle that separates the thorax from the abdomen and pulls the ribcage down during breathing (respiration).
Material creat per Marian Ruiz Simón- Projecte AICLE- Escola Túrbula 2014-15
and the and are
Capillaries, which are small blood vessels with thin walls, are wrapped around alveolus. The walls are so thin and close to each other that the air easily seeps through.
In this way, oxygen seeps through into the bloodstream and carbon dioxide, in the bloodstream, seeps through into the alveoli, and is then removed from the body when we breathe out.
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Material creat per Marian Ruiz Simón- Projecte AICLE- Escola Túrbula 2014-15
ENGLISH
CATALÀ
ALVEOLI ALVÈOL BREATHE IN/ OUT
INHALAR/ EXHALAR
BRONCHI BRONQUI
BRONCHIOLES
CAPILLARIES
The functional and respiratory units in the lung, where oxygen and carbon dioxide are exchanged To take in oxygen from (the surrounding medium, esp air) and give out carbon dioxide; respire
Two tubes at the end of the trachea, each lead to a lung.
A network of smaller tubes leading from the bronchi into the lung and finally to air sacs. BRONQUÍOL
CAPIL·LAR
DIAPHRAGM
DEFINITION
DIAFRAGMA
LARYNX
are small blood vessels with thin walls, are wrapped around alveolus. The large, thin muscle that separates the thorax from the abdomen and pulls the ribcage down during breathing The voice box, where vocal cords are located.
LARINGE LUNGS PULMONS PHARYNX
FARINGE
TRACHEA
TRÀQUEA
a pair of spongy saclike respiratory organs within the thorax, which oxygenate the blood and remove its carbon dioxide Passageway for air that leads to trachea
( windpipe) through which air passes on the way to the lungs and is kept open by tiny rings of cartilage
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1. Fill in the blanks below with the correct labels.
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2. Match the halves of each sentence 1. First the air
a. Air leaves the lung
2. Then it
b. Tiny sacs of air
3. Next it
c. Enters through the nose.
4. In the lungs
d. Oxygen passes into the blood.
5. Alveoli are
e. Our lungs fill with air
6. In the alveoli
f. The bronchi divide into smaller bronchioles
7. When we inhale
g. Passes through the pharynx, larynx and trachea
8. When we exhale
h. Goes through the two main bronchi each lung.
then copy them and join the correct halves .
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3. Complete the following table:
Use the following words:
CLEANER water vapor
nitrogen
less O2 less CO2 WARMER COLDER
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Why is this system vital? Paragraph 1: introduction
We have been working on the ________________ system and we have come to the conclusion that we cannot live without this system. Or We have been working on the _______________ system and we would like to tell you why this system is vital to live.
Paragraph 2: elaborate your arguments
On the one hand, this system is ____________________________. Besides, _____________________________ because _________________. This system is crucial because _________________________________ Paragraph 3: conclusion
We would like to conclude by saying that the _________________ system is a must to live because _____________________________________.
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