Grade 5 CW chapter 1- organ system circulatory, respiratory and reproductive system notes for grade five students

organ system in detail

1. Science
Unit 1 - The Human Body
Keywords:I.
1.Circulation
2.
Vertebrates
3.Respiration


Diaphragm
4.
Capillaries5.

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2. 9.Blood Vessels
10.
Parasites
2.
Fill in the blanks:II.
Pulse rate is caused by the pressure of the blood as the heart pumps it to the rest of the body.1.

Fertilisation
Menstruation
Hormones
6.
7.
8.
The number of times we breathe in and out in one minute is called breathing rate.
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3. PTO
The air tube that carries the air we breathe in down to the lungs is the windpipe or trachea.3.
Why do we need three different types of blood vessels? Q1.
Answer the following:III.
5.Vectors are living things that spread diseases but do not get the diseases themselves.
Hormones are chemicals in the body that causes the body changes that happens during puberty.4.
Ans: We have three different types of blood vessels, each have different jobs to do to ensure that all parts of the body get


food and oxygen, and that waste products are removed from different parts of the body. Arteries carry blood

containing oxygen and food to all parts of the body. Veins carry blood from different parts of the body back to the heart.


4. Capillaries join arteries and veins, bring oxygen and food to the body cells and take away waste. 

Describe to your partner the pathway of blood around the body. Make a cycle diagram to show this pathway. Q.2.
The heart pumps blood in arteries to the lungs to pick up oxygen. The oxygen-rich blood travels back in veins to theAns:

heart. The heart pumps the oxygen-rich blood in other arteries to the rest of the body. The blood from the rest of the
body, which is now low in oxygen, travels back to the heart in veins.
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5. What is the main function of the respiratory system?Q.3.
broken skin.
germs from the wound. We must cover it with a plaster to stop any germs from getting into the body through the
Ans:
Explain why we should clean cuts and wounds and cover them with a plaster.Q.4.
to the body which is required for breaking down of substances to release energy and removes carbon dioxide, which
Ans:
is the metabolic waste.
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The respiratory system controls the exchange of gases between the body and the atmosphere.They provide oxygen
The skin is a barrier that stops germs from entering the body. If we get a cut or wound, we must clean it to remove

6. What are the methods to prevent the spread of different types of diseases in food, in


Q. 5.
In food - Wash raw unpeeled fruits and vegetable before eating them. Keep food covered. Wash your hands withAns:
soap and water. Do not leave food at room temperature.
use rivers or other bodies of water as a toilet.
water and in body fluids?
In water - Only drink safe, clean water. Boil water from rivers or reservoirs, or treat it with bleach to kill germs. Do not
In body fluids - Cover your nose and mouth when you cough or sneeze. Keep wounds covered with a plaster and do
not touch other people’s open wounds.