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
Blood oxygenation refers to the amount of oxygen present in the blood. It is an important measure of how well oxygen is being delivered to different parts of the body, including the brain.
Related terms
Hemoglobin: Hemoglobin is a protein found in red blood cells that carries and releases oxygen throughout the body.
Functional Magnetic Resonance Imaging (fMRI): fMRI is an imaging technique that measures changes in blood flow and blood-oxygen levels in different areas of the brain, providing information about brain activity.
Oxygen Saturation: Oxygen saturation refers to the percentage of hemoglobin molecules carrying oxygen compared to its total capacity.