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 throught de 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.
A) Circulatory System
1) The System of organs that produce, collect, and eliminate urine.
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
Material creat per Marian Ruiz Simón- Projecte AICLE- Escola Túrbula 2014-15
Classify these organs in the chart Stomach Trachea
Veins Arteries
Kidneys
Lungs
Heart
Intestine
Capillaries
Liver
Bronchi
Bladder
SYSTEMS AND ORGANS THAT TAKE PART IN NUTRITION Digestive
Respiratory
Excretory
Circulatory
Material creat per Marian Ruiz Sim贸n- Projecte AICLE- Escola T煤rbula 2014-15
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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Two bean-shaped organs that filter waste from the blood and produce urine return useful nutrients back into the bloodstream
Renal Veins
Two thin tubes that take pee from the kidney to the bladder
constantly transport blood to the kidneys.
renal arteries
A sac that holds pee until it’s time to go to the bathroom
The tube that carries urine from the bladder out of the body when you pee
Facts of the Urinary Tract
for example
make free (of)
Body processes such as digestion and metabolism (when the body turns food into energy) produce wastes. The body produces pee as a way to get rid of rubbish
waste and extra water that it doesn't need. Before leaving your body, urine travels through the urinary tract.
accumulate
If they didn't do this, toxins (bad stuff) would quickly build up in your body and make you sick.
Material creat per Marian Ruiz Simón- Projecte AICLE- Escola Túrbula 2014-15
Kidneys: Filter blood- 2, 000 L/day Remove waste products and reabsorb water, other valuable substances.
Metabolism produces toxic
1.5
L
of urine/day.
substances as nitrogen. We
Urine is made of water
eliminate nitrogen as urea-
(95%)
water soluble.
substances (5%).
and
waste
Nephrons are where blood filtering takes place in the kidneys. They are found at the end of blood vessels, and separate blood cells from plasma. There are about one million nephrons in each of your two kidneys. The first part of the nephron separates the larger parts of blood (red blood cells, white blood cells and platelets) from the smaller parts (water, supplies and wastes).
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CO2
Sweat glands eliminate excess heat, salt
Material creat per Marian Ruiz Simón- Projecte AICLE- Escola Túrbula 2014-15
ENGLISH
CATALÀ
DEFINITION
AMMONIA
AMONÍAC
a colorless liquid which emits a strong smell, a waste product of the human body.
BLADDER
BUFETA URINÀRIA
the part of the body that holds urine until time to eliminate.
CARBON DIOXIDE
DIÒXID DE CARBONI
a gas found in the atmosphere, also a waste product of the human body.
KIDNEYS
RONYÓ
a kidney shaped organ that helps process urine
NEPHRONS
NEFRONA
the structural and functional unit of the kidney
UREA
UREA
URETER
URÈTER
URETHRA
URETRA
URINE
ORINA
a poisonous by-product of digesting protein
muscular tube that push urine from the kidneys to the urinary bladder.
a channel through which urine leaves the body.
a liquid waste product created by the kidneys
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Material creat per Marian Ruiz Simón- Projecte AICLE- Escola Túrbula 2014-15
1.Order the steps in the excretion process: __ . The kidneys filter the blood. __. Urine is expeled through the urethra. __. Urine is carried by the ureters. __. Blood goes through the kidneys. __. Urine is formed. __. Urine is stored in the bladder.
Now write the text using the writing frame:
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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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