How Red Blood Cells Deliver Oxygen

Oxygen Shuttles: RBCs carry oxygen from your lungs to your tissues.
Unique Shape: Their donut-like form increases surface area for gas exchange.
Hemoglobin Power: Each cell carries millions of oxygen-binding molecules.
No Nucleus: RBCs ditch their nucleus for extra oxygen space.
Constant Flow: They circle your body in under a minute.
Flexible Travelers: They bend to pass through tiny capillaries.
Two-Way Trip: They carry carbon dioxide back to the lungs.
Short Lifespan: RBCs live about 120 days before replacement.
Massive Production: Bone marrow makes millions every second.
Essential Delivery: Without oxygen transport, tissues shut down quickly.