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Is Lymph Oxygenated or Deoxygenated?

Published in Lymph Physiology 2 mins read

Lymph is deoxygenated compared to blood. This means it carries less oxygen.

Lymph vs. Blood: Oxygen Content

The difference in oxygen content is a key distinction between blood and lymph. Here's a breakdown:

Feature Blood Lymph
Oxygen Content Carries more oxygen Carries less oxygen
Nutrients Carries more digested food and nutrients Carries less digested food and nutrients
Proteins Contains plasma proteins Lacks plasma proteins

As shown in the table derived from the reference, lymph carries less oxygen and digested food compared to blood.

Key Points About Lymph

  • Lymph is a fluid that circulates through the lymphatic system.
  • It plays a crucial role in the immune system.
  • Lymph originates from blood plasma that has passed through capillary walls into the tissue spaces.
  • The reduced oxygen content of lymph compared to blood is because much of the oxygen is used by the body tissues before the fluid becomes part of the lymphatic system.
  • The primary function of lymph is not to transport oxygen.
  • Lymph carries important substances such as proteins and fats, which play an important part in the immune function.

Why Does Lymph Have Less Oxygen?

  • Blood carries oxygen from the lungs to tissues in the body.
  • Tissues extract oxygen from the blood, and the remaining fluid that becomes lymph contains less oxygen.
  • This process means lymph is essentially a waste product after tissue cells have taken oxygen, and therefore it carries less oxygen.

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