HEART & BLOOD FLOW
DOUBLE CIRCULATION · LIVE
prostudypk.com
Double Circulation
Right atrium
Right ventricle
Left atrium
Left ventricle
LUNGS (O₂ in)
BODY (O₂ out)
vena cava
pulmonary artery
pulmonary vein
aorta
72 / min
heart rate
phase (slow motion ×2)
0.8 s
one heartbeat
1. Two Circuits
Pulmonary:
right ventricle → lungs → left atrium
Systemic:
left ventricle → body → right atrium
blood passes through the heart twice in one circuit
2. Valves (open = green)
Tricuspid
RA → RV
Bicuspid
LA → LV
Pulmonary SL
RV → lungs
Aortic SL
LV → body
3. Remember
Arteries carry blood away from the heart, veins towards it
The pulmonary artery carries deoxygenated blood
MATRIC BIOLOGY · TRANSPORT · PUNJAB BOARDS
‹ Labs
↺
❚❚
1×
Next ›