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80361
Heart
Description
Mind Map on Heart, created by rachbreen on 09/05/2013.
Mind Map by
rachbreen
, updated more than 1 year ago
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Created by
rachbreen
almost 11 years ago
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Resource summary
Heart
Four chambers
Right side
Deoxygenated blood
Vena Cava
Right atrium
Tricuspid valves
Right ventricle
Semilunar valves
Pulmonary artery
Left side
Oxygenated blood
Pulmonary vein
Left atrium
Bicuspid valves
Left ventricle
Semilunar valves
Aorta
Features
In ventricles there are TENDINOUS CORDS
Attach to valves and walls to prevent valves inside out - backflow of blood
Ventricular septum
Separates the ventricles
Deoxygenated / oxygenates separate
Valves
Are pocket tissues
Fill with blood and close
Blood pressure
Thin atria walls, blood only goes to ventricles
Left ventricle thickest
Pump to whole body
Right ventricle thickish
Only going to lungs which is close
Fine capillaries in lungs burst under high pressure
The cycle
Sino-atrial nodes
Atria walls
atrio ventricular nodes
purkyne tissue
Ventricle walls
Diastole
Atrial systole
Ventricular systole
Ventricles contract - blood forced into arteries.
Atria contract - blood forced into ventricles, AV valves close
Relaxed - blood flow into ventricles
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