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4271355
Blood & Circulation
Description
GCSE Biology Mind Map on Blood & Circulation, created by jaeg lawson on 05/01/2016.
No tags specified
blood & circulation
triple biology
biology
gcse
Mind Map by
jaeg lawson
, updated more than 1 year ago
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Created by
Scott Church
over 8 years ago
Copied by
jaeg lawson
over 8 years ago
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Resource summary
Blood & Circulation
Red Blood Cells
Contain no nucleus (doesn't have a dip in the centre)> more oxygen carried
Large surface area compared to volume > oxygen close to surface
Platelets
Platelets clot the blood after a wound > prevents infection and blood loss
People with haemophilia have a faulty gene that codes for the clotting process
White Blood Cells
Larger than red blood cells, flexible shape to help engulf disease organism
Protects against infection by digesting harmful microbes, bacteria digested inside WBC
Able to squeeze out of capillaries to defend different tissues
Has a dip in the centre and has a nucleus
Plasma
Contains mostly water, dissolved food, urea, hormones and carbon dioxide
Pale yellow fluid carries blood cells, useful and waste substances around the body through blood vessels
Arteries = Away
Arteries have thick walls because the blood pressure is very high. They also have thick elastic walls
veINs = IN
Capillaries = Small cells
Valves = Open and close to let blood through and to prevent back flow
Heart is made out of muscle
Capillaries take blood to small cells
The heart has a double circulation, meaning blood can be pumped to the lungs and body at the same time
Pulmonary Artery > Carries blood from the heart to the lungs
Aorta (Artery) > Carries blood from heart to body
Pulmonary Vein > Carries blood from lung to heart
Vena Cava (Vein) > Carries blood from body to heart
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