4271356
Description
Mind Map by jaeg lawson, updated more than 1 year ago
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Created by Scott Church
almost 9 years ago
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Copied by jaeg lawson
almost 9 years ago
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1_Blood & Circulation
- Red Blood Cells
- Contain no nucleus ( have a dip in the centre)>more oxygen carried
- Large surface area compared to volume > oxygen close to surface
- Contain no nucleus ( have a dip in the centre)>more oxygen carried
- Platelets
- Platelets clot the blood after a wound > prevents infection and blood loss
- People with haemophilia have a faulty gene for the clotting process
- Platelets clot the blood after a wound > prevents infection and blood loss
- 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
- Larger than red blood cells, flexible shape to help engulf disease organism
- Plasma
- Contains mostly water, dissolved food, urea, hormones and carbon dioxide
- Pale yellow fluid carries blood cells, useful substances and
waste around the body through blood vessels
- Contains mostly water, dissolved food, urea, hormones and carbon dioxide
- 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
- heart
- how is works
- blood flows into the atrias from the vena cava and pulmonary vein
- atria contracts pushing blood into the ventricles
- ventricles contract forcing blood to the lungs through
the pulmonary artery and to the body through the aorta
- blood flows to the heart from the bady through the vena
cava and from the lungs through the pulmonary vein
- this refills the atrias and restarts the process
- this refills the atrias and restarts the process
- blood flows to the heart from the bady through the vena
cava and from the lungs through the pulmonary vein
- ventricles contract forcing blood to the lungs through
the pulmonary artery and to the body through the aorta
- atria contracts pushing blood into the ventricles
- blood flows into the atrias from the vena cava and pulmonary vein
- how is works
- blood vessels
- Arteries = Away
- Arteries have thick walls because the blood pressure
is very high. They also have thick elastic walls
- Arteries have thick walls because the blood pressure
is very high. They also have thick elastic walls
- Capillaries = Small cells
- walls are one cell thick to allow
substances to be transferred
- walls are one cell thick to allow
substances to be transferred
- veins=away
- veins have valves to
prevent backflow
- veins have valves to
prevent backflow
- Arteries = Away
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