Lymph sacs

Lymph Sacs

The Lymph sacs are an integral part of the lymphatic system, which plays a crucial role in the body's immune response. They are the primitive counterparts of the lymph nodes in the developing embryo.

Etymology

The term "lymph" is derived from the Latin word "lympha," which means "connected to water," while "sac" comes from the Latin "saccus," meaning "bag."

Development

The lymph sacs develop from the venous system during the fifth week of embryonic development. They are initially six in number - two jugular, one retroperitoneal, one cisterna chyli, and two posterior lymph sacs. These sacs are the primitive counterparts of the lymph nodes and are responsible for the lymphatic system's development in the body.

Function

The primary function of the lymph sacs is to act as a reservoir for the lymph, a fluid that contains white blood cells, especially lymphocytes, which are essential for the body's immune response. The lymph sacs also play a crucial role in the absorption and transportation of fats from the digestive system.

Related Terms

• Lymphatic system
• Lymph nodes
• Lymphocytes
• Venous system

See Also

• Lymphatic vessel
• Lymphatic fluid
• Immune system

Lymph sacs Resources
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