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Circulation
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renal artery

renal vein

Slide 15

head and arms

head and arms

pulmonary artery

pulmonary vein

lungs

vena cave

aorta

liver

hepatic artery

hepatic vein

digestive system

hepatic portal vein

kidneys

renal artery

renal vein

legs

Slide 16

Blood

Blood

Slide 17

Red cells

Red cells

Slide 18

Red cells

Red cells

Do not have a nucleus

Biconcave discs

Contain the chemical haemoglobin.

Haemoglobin carries oxygen around the body.

At the centre of the haemoglobin molecule is an iron atom.

Slide 19

Red cells

Slide 20

air sac in the lung

air sac in the lung

Slide 21

air sac in the lung

air sac in the lung

oxygen

Slide 22

air sac in the lung

air sac in the lung

oxygen

1 as blood flows through the lungs the haemoglobin in the red cells picks up oxygen

Slide 23

air sac in the lung

air sac in the lung

oxygen

1 as blood flows through the lungs the haemoglobin in the red cells picks up oxygen

2 Haemoglobin and oxygen join to make oxyhaemoglobin

Slide 24

air sac in the lung

air sac in the lung

oxygen

1 as blood flows through the lungs the haemoglobin in the red cells picks up oxygen

2 Haemoglobin and oxygen join to make oxyhaemoglobin

3 when the blood flows past cells with very little oxygen in them the oxyhaemoglobin breaks down

Slide 25

air sac in the lung

air sac in the lung

oxygen

1 as blood flows through the lungs the haemoglobin in the red cells picks up oxygen

2 Haemoglobin and oxygen join to make oxyhaemoglobin

3 when the blood flows past cells with very little oxygen in them the oxyhaemoglobin breaks down

oxygen diffuses into the cells of the body

oxygen is used for respiration

Slide 26

air sac in the lung

air sac in the lung

oxygen

1 as blood flows through the lungs the haemoglobin in the red cells picks up oxygen

2 Haemoglobin and oxygen join to make oxyhaemoglobin

3 when the blood flows past cells with very little oxygen in them the oxyhaemoglobin breaks down

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