Written by the Fiveable Content Team • Last updated September 2025
Verified for the 2026 exam
Verified for the 2026 exam•Written by the Fiveable Content Team • Last updated September 2025
Definition
Hemoglobin is an iron-containing protein found in red blood cells that binds oxygen molecules for transport around our bodies.
Related terms
Oxygen Transport: The process by which oxygen is carried from our lungs via our bloodstream to all parts of our bodies. Hemoglobin plays a crucial role here as it binds with oxygen for this transportation purpose.
A mineral that is crucial in the formation of hemoglobin. Without enough iron, your body can't produce enough hemoglobin for red blood cells.
Erythrocytes: Also known as red blood cells, these are the cells that contain hemoglobin and transport oxygen and carbon dioxide to and from our tissues.