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THE HEART AND CIRCULATORY SYSTEM 1. Students will be able to identify the organs in the circulatory system. 2. Students will be able to describe the heart and the main blood vessels and their role. 3. Students will be able to describe the role of the ‘double pump.’ Learning objectives:

T HE HEART AND CIRCULATORY SYSTEM 1. Students will be able to identify the organs in the circulatory system. 2. Students will be able to describe the heart

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Page 1: T HE HEART AND CIRCULATORY SYSTEM 1. Students will be able to identify the organs in the circulatory system. 2. Students will be able to describe the heart

THE HEART AND CIRCULATORY SYSTEM

1. Students will be able to identify the organs in the circulatory system.

2. Students will be able to describe the heart and the main blood vessels and their role.

3. Students will be able to describe the role of the ‘double pump.’

Learning objectives:

Page 2: T HE HEART AND CIRCULATORY SYSTEM 1. Students will be able to identify the organs in the circulatory system. 2. Students will be able to describe the heart

ARTERIES Carry blood away from the heart.

The blood in the arteries is under high pressure and so:•Arteries have thick outer walls•Arteries have thick layers of muscles and elastic fibres

VEINSCarry blood to the heart.

The blood in the veins is under low pressure and so:•Veins have thin walls•Veins have thin layers of muscle and elastic fibres.

Page 3: T HE HEART AND CIRCULATORY SYSTEM 1. Students will be able to identify the organs in the circulatory system. 2. Students will be able to describe the heart

Unlike arteries, veins have one-way valves in them to keep the blood moving in the correct direction.

Page 4: T HE HEART AND CIRCULATORY SYSTEM 1. Students will be able to identify the organs in the circulatory system. 2. Students will be able to describe the heart

Oxygenated blood -

•Blood that contains oxygen •Mainly found in arteries

Deoxygenated blood -

•Blood that does not contain oxygen•Mainly found in veinshttp://www.bbc.co.uk/schools/gcsebitesize/science/21c/disease/heartdiseaserev2.shtml

http://www.bbc.co.uk/schools/gcsebitesize/science/21c/disease/heartdiseaserev3.shtml

Page 5: T HE HEART AND CIRCULATORY SYSTEM 1. Students will be able to identify the organs in the circulatory system. 2. Students will be able to describe the heart

The heart is a muscular pump that keeps blood moving.

Page 6: T HE HEART AND CIRCULATORY SYSTEM 1. Students will be able to identify the organs in the circulatory system. 2. Students will be able to describe the heart
Page 7: T HE HEART AND CIRCULATORY SYSTEM 1. Students will be able to identify the organs in the circulatory system. 2. Students will be able to describe the heart

1.Complete worksheet titled ‘The heart and the circulatory system.’

2.Label the diagram of the heart

TASK:

Page 8: T HE HEART AND CIRCULATORY SYSTEM 1. Students will be able to identify the organs in the circulatory system. 2. Students will be able to describe the heart

The heart is a DOUBLE PUMP:

1st - blood is pumped to the lungs & returns to the heart,2nd - blood is pumped to respiring muscles & back to the heart again.

1. Deoxygenated blood is pumped from the heart to the lungs

2. The blood receives oxygen and is pumped back to the heart

4. The oxygen leaves the blood to be used for respiration in the body and the blood goes back to the heart

3. The oxygenated blood is then pumped to the rest of the body

Page 9: T HE HEART AND CIRCULATORY SYSTEM 1. Students will be able to identify the organs in the circulatory system. 2. Students will be able to describe the heart

DISSECTION