★Systemic & Pulmonary circuits: pathway of blood. ← side of ♥ receives oxygenated blood from lungs and pumps throughout the body. The blood vessels that carry blood to and from all body tissues form the systemic circuit. → side of ♥ receives deoxygenated blood from body tissues and pumps to the lungs to pick up O2 and dispel CO2. The blood vessels that carry blood to and from the lungs form the pulmonary circuit.
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