Pulmonary Circulation: Understanding Blood Flow to and from the Lungs
Blood flows in two circuits:
1. Pulmonary Circulation (Blood to Lungs)
- Deoxygenated blood from right ventricle → pulmonary artery → lungs
- In alveoli: CO₂ exchanged for O₂
2. Systemic Circulation (Blood from Lungs)
- Oxygenated blood via pulmonary veins → left atrium → left ventricle → aorta → body
- Delivers O₂/nutrients to tissues
Pulmonary circulation oxygenates blood; systemic circulation distributes it.
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