Natural Science. Term 1

 Contents

- Vital functions

- Function of nutrition:

 * Digestive system.

 * Respiratory system.

 * Circulatory system.

 * Excretory system.

        A balanced diet

- Function of reproduction.

VITAL FUNCTIONS

   Nutrition: All living things need food. We get nutrients from our food. Nutrients give us energy! Energy helps us to grow and repair damage in our bodies.

 

   

Animals can be:                      

• Carnivorous               
• Herbivorous                       
• Omnivorous

  

Plants make their own food through photosynthesis. They use water, carbon dioxide and energy from the sun.

 

Interaction: All living things respond to their environment. We interact with the world around us. Our senses detect information and we decide how to respond.

​                        

  Reproduction: When a living thing produces another living thing.

• Viviparous reproduction
• Oviparous reproduction
• Seed reproduction

     

    Digestive system

This system breaks down food into simple substances.

PARTS: pharynx, oesophagus, stomach, liver, pancreas, small and large intestines and rectum.

Respiratory system.

This system let us inhale oxygen and exhale carbon dioxide. 

Process Inhalation - Gas exchange  - Exhalation

PARTS: larynx, trachea, bronchi, bronchioles, alveoli, lungs and diaphragm.

Circulatory system.

This system distributes nutrients and oxygen to different parts of the body.

PARTS: heart, blood, blood vessels (capillaries, veins and arteries)

Excretory system.

This system helps the body to eliminate waste substances.

                                Urinary system                                                                    Sweat glands

.                    

.Reproductive system

                 Male reproductive system                                Female reproductive system

Pregnancy

First step - Fertilisation

Second step - Pregnancy

Third step - Delivery (Birth)

VIDEOS

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THE REPRODUCTIVE SYSTEM

WORKSHEET 1

The vital functions, una ficha interactiva de Paloma_91
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WORKSHEET 2

NUTRITION 3 - Respiratory System, una ficha interactiva de tercerocossio
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WORKSHEET 3

The circulatory system, una ficha interactiva de PaulaMinana

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WORKSHEET 4

The excretory system, una ficha interactiva de joseam
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