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 Bronchi
Heart
Capillaries Bladder
SYSTEMS AND ORGANS THAT TAKE PART IN NUTRITION Digestive
Respiratory
Excretory
Circulatory
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Complete the text: Nutrition is _________________. These 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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My Body: Heart and Blood Your heart is a muscular organ It works like a pump that keeps the circulatory system moving It sends blood around inside your body. Blood takes oxygen and nutrients to the body's cells. It takes away waste materials. remove
Every day, the heart pumps about 7,600 litres of blood, beating about 100,000 times
Blood that is rich in oxygen appears red. Blood that is poor in oxygen appears blue.
Material creat per Marian Ruiz Simón- Projecte AICLE- Escola Túrbula 2014-15
liberated
In the capillaries, food and oxygen are released to the body cells, and carbon dioxide and other waste products are returned to the bloodstream.
goes back
Blood leaves the left side of the heart and travels through arteries which gradually divide into capillaries.
goes through
The blood then travels in veins back to the right side of the heart, where it is pumped directly to the lungs.
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In the lungs, carbon dioxide is exchanged for oxygen, and this renewed blood flows back to the left side of the heart, and the whole process begins again.
THE HUMAN BLOOD CIRCULATION IS DOUBLE, BECAUSE BLOOD PASSES TWICE THROUGH THE HEART, AND COMPLETE, BECAUSE OXYGENATED BLOOD NEVER GETS MIXED WITH DEOXYGENATED BLOOD. Material creat per Marian Ruiz Sim贸n- Projecte AICLE- Escola T煤rbula 2014-15
Blood vessels and heart form two main circuits: • Pulmonary circulation is the movement of blood between the heart and lungs. • Systemic circulation is the movement of blood between the heart and the rest of the body.
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Material creat per Marian Ruiz Simón- Projecte AICLE- Escola Túrbula 2014-15
ENGLISH
CATALÀ
ARTERY
ARTÈRIA
BLOOD
BLOOD VESSELS
CAPILLARY
HEART
VEIN
DEFINITION
a tube that carries blood away from your heart
to the rest of the body.
SANG
a fluid found in humans and other animals which provides nutrients and oxygen to all parts of the body, carries away waste, and helps fight disease.
VASOS SANGUÍNIS
the tubes that carry blood around the body: arteries, capillaries, veins
CAPIL·LARS
a tiny, thin-walled blood tube that connects small arteries ( arterioles ) and small veins ( venules ) to form a network throughout the body.
COR
the muscular organ composed that is responsible for pumping blood throughout the body.
VENA
a tube that returns blood to the heart from the rest of the body
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Material creat per Marian Ruiz Simón- Projecte AICLE- Escola Túrbula 2014-15
Complete these sentences: Blood that is rich in oxygen appears... Blood that is poor in oxygen appears... Blood leaving the heart travels in... Blood returning to the heart travels in...
Write each word in the correct place: Heart - blood vessels – blood The __________________ are the tubes that carry the blood.
The __________________ takes the oxygen and nutrients to all parts of the body. The __________________ pumps the blood.
Match:
Capillaries
are blood vessels which carry blood away from the heart.
Veins
are tiny blood vessels which connect arteries to veins.
Arteries
are vessels which carry blood into the heart.
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Put the pieces of the text in order:
…
then travels …
Now write the text using the writing frame:
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Material creat per Marian Ruiz Sim贸n- Projecte AICLE- Escola T煤rbula 2014-15
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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