The circulatory system consists of blood, blood vessels, and the heart. Blood transports nutrients and oxygen to cells while removing waste. Blood vessels are tubes that transport blood throughout the body. The heart acts as a pump to circulate blood. The circulatory system has two circuits - pulmonary circulation and systemic circulation. Pulmonary circulation transports blood to the lungs to exchange gases, while systemic circulation transports blood to tissues to exchange nutrients and waste. The excretory system includes the kidneys, ureters, bladder, and urethra. The kidneys filter waste from the blood to produce urine. The ureters carry urine from the kidneys to the bladder, which stores urine until it is expelled

1. by Rafael
Rodríguez
Pérez
PRESENTATION without answers

4. Numbered heads together strategy. What function do these parts
of the circulatory system have?
The circulatory system consists of…
- BLOOD
- BLOOD VESSELS
- THE HEART
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5. Numbered heads together strategy. What function do these parts
of the circulatory system have?
The circulatory system consists of…
- BLOOD
- BLOOD VESSELS
- THE HEART
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- It is a liquid substance in our body that gives
nutrients and oxygen to all the body cells. It also
transports waste products and CO2.
- They are tubes that transport blood throughout
the body.
- It is a special type of muscle and acts as a pump
to send blood around the body.
1-2-group strategy. Match the parts of the
circulatory system and their definitions.

6. - Plasma. It is a clear fluid which transports nutrients and waste
around the body.
- Red blood cells. These carry oxygen from the lungs to all body
cells.
- White blood cells. These protect the body from germs and
disease.
- Platelets. These are
fragments of old cells.
They help to stop bleeding
from wounds.
Cooperative reading. Look, read and answer.
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a) What are the three types of
blood cells?
b) What do they do?
c) Why do you think blood is
red?

7. Look and think. What blood vessel do nutrients, oxygen and
carbon dioxide (CO2) exchanges take part?
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8. Look and think. What blood vessel do nutrients, oxygen and
carbon dioxide (CO2) exchanges take part?
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Capillaries have
very thin walls. This
allows for nutrients
and oxygen to pass
into the body cells,
and for carbon dioxide
(CO2) and other waste
products to leave the
cells.

9. Work in pairs. Watch these two videos and draw a
diagram of a heart and its movements in your notebook. Then, check your
partner’s diagram.
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10. BLOOD SAVES LIVES
In Spain, a blood transfusion is needed every two minutes! Blood
transfusions are required after traffic accidents, in a lot of operations and
in the treatment of some illnesses.
- Where can you donate blood?
- Should everyone donate?
- Why is it important to
volunteer?
Reading twins strategy. Take a quick look at the text
(15 seconds), write a hypothesis about the text in your notebook. Later,
tell it to your reading twin and read cooperatively the text to check your
hypotheses.
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EXTRA CREDIT
Research what the
different blood types are
and tell me what is yours.

12. CIRCULATION
Blood moves constantly in the circulatory system through two
separate circuits: the pulmonary circuit and the systemic circuit.
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Team work. Watch this video about pulmonary and
systemic circulation. Then, contribute to make up a P.E. circuit to explain
circulation.
Taking notes
while watching
the video is a
good idea. So
you should do
it.

13. CIRCULATION AND HEALTH
In order to look after our circulatory system...
-We should eat a healthy diet. Consume vegetable fats, like olive
oil, and foods that are high in iron, like pulses.
-We shouldn’t eat too many carbohydrates and fats.
-We should use salt in moderation.
-We should exercise regularly.
-We shouldn’t smoke.
-We shouldn’t consume
excessive alcohol.
2
Individual activity. Read and design a mini poster for your town.

15. Excretion is the elimination of waste products from the blood.
These substances are toxic and need to be eliminated.
3
Read, look and discuss: How is each system related to
excretion?

16. a) What do you think your kidneys do?
b) What would happen if your kidneys did not work well?
c) Could you live without kidneys?
d) What can you find in your bladder?
3
Pencils in the centre strategy. Place your pencils in the centre of
the table, talk about the answer for each question and, when you think
everyone has the answer, take your pencil and write it in your notebook.
Work in pairs. Watch this video and
draw a diagram about the
functioning of the excretory system.
Then, explain it to your partner.

17. 3
1-2-group strategy. Read and match organs and functions.
1. BLADDER
2. URETHRA
3. KIDNEYS
4. URETERS
a. They carry urine from the kidneys to the
bladder.
b. It stores urine until it leaves the body.
c. It is a tube that releases urine out of the body.
d. They filter the blood, retain waste products and
use them to produce urine. They also reabsorb
good nutrients and water and return them to the
blood.

18. 3
TPR. Let’s sweat! Stand up, listen and do.
Freeze
the
image!
TEACHER

19. 3
TPR. Let’s sweat! Stand up, listen and do.
- Take a walk around the classroom.
- March in place.
- Do 20 push-ups.
- Hop on your right foot.
- Hop on your left foot.
- Squat 15 times.
REPEAT SOME ACTIONS UNTIL CHILDREN
SWEAT.

20. 3
Think in groups. What components does your sweat contain?
Write a list.
Sweat consists of:
- ____________.
- ____________.
- ____________.
Mini teaching activity.
Look at the picture and explain to
your partner what a sweat gland is and
what it looks like.

21. 3
Read and write TRUE or FALSE. Correct false sentences.
a. Sweat is formed in sweat glands.
b. Sweat has very little water.
c. Sweat cools our body when we are hot.
d. Waste products are not eliminated by sweating.
e. Sweat glands are not considered part of the excretory
system.

22. 3
1-2 strategy. Copy this introduction and these two columns,
listen and complete the table. Then, check your answers in pairs.
It is very important to look after our excretory system, so we...
SHOULD SHOULDN’T
drink 1.5 litres of water every
day.
consume drugs.
have a shower every day with
warm water and mild soap.
consume junk food.
clean our skin to prevent
infections.
smoke.
drink 6 glasses of water every
day.
drink alcohol.

23. NUTRITIO
N II
CIRCULATORY
SYSTEM
BLOOD
-_______
-______________
-______________
-________
EXCRETORY
SYSTEM
transport
oxygen
protection
stop bleeding
BLOOD VESSELS
-_______
-Veins
-__________
go to all the body
go to the ______
nutrients and gas exchange
HEART
-_________
-Ventricles
CIRCULATION
-Pulmonary circulation
-Systemic circulation
exchange of gases
in ____________exchange of
nutrients, gases
and waste in
_________
EXCRETORY
SYSTEM
-_______
-_______
-_______
-_______
blood filtration
transports urine
stores urine
expels urine
SWEAT GLANDS
-They eliminate
_______
___________.
-They cool your body.
RESPIRATORY
SYSTEM
-They expel
________________.