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Biology - The Heart - Coggle Diagram
Biology - The Heart
Four chambers
L + R atrium
L + R ventricle
Double Circulatory System
1st circuit
Right ventricle
deoxygenated blood to lungs - take in oxygen
oxygenated blood returns to heart
2nd circuit
Left ventricle
oxygenated blood around organs
blood gives up oxygen to body cells
deoxygenated blood returns to heart
blood flows into 2
atria
from
vena cava
and
pulmonary vein
atria contract - push blood into
ventricles
ventricles contract - force blood into
pulmonary artery
and
aorta
out of heart
blood flows to organs
Valves
blood flows in right direction
Walls of heart
muscle tissue
Contracts to pump blood around the body