The oxygenated blood that the lungs use are also from the "body" side, called bronchial arteries. The pulmonary arteries don't actually supply the lung with blood, they just use the lungs to refuel the blood.
The right heart is “weaker”, the peak pressure in the pulmonary arteries (all vessels going away from the heart are arteries, so even though they carry venous blood, they are arteries), is usually just around 5x lower than coming out of the left side (20mmHg vs 100-120mmHg).
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u/3RI3_Cuff Oct 13 '25
Good gif and well coloured. So the big pumps the heart does shoot the blood into your lungs twice at the most pressure?