**Red Blood Cell Anatomy** Red blood cells (RBCs), also known as erythrocytes, are essential components of the blood that transport oxygen and carbon dioxide throughout the body. ### **Anatomy of Red Blood Cells**:
1. **Shape**: RBCs have a unique **biconcave disc shape**, which increases surface area for gas exchange and allows them to squeeze through tiny blood vessels.
2. **Membrane**: The cell membrane is flexible, allowing RBCs to deform and fit through capillaries.
3. **Hemoglobin…