Submental lymph nodes

Submental Lymph Nodes

Diagram showing the network of lymph nodes in the human body. The submental lymph nodes are located under the chin.

The Submental Lymph Nodes are a group of lymph nodes located in the submental region, which is the area beneath the chin. They are part of the lymphatic system, which plays a crucial role in the body's immune response.

Anatomy

The submental lymph nodes are typically small, ranging from 5 to 8 in number. They are located in the submental space, a triangular region on the neck beneath the mandible (lower jawbone) but above the hyoid bone. The nodes are embedded in the submental fat, close to the midline, and are usually located near the anterior belly of the digastric muscle.

Function

The primary function of the submental lymph nodes, like other lymph nodes in the body, is to filter lymph. Lymph is a clear fluid that circulates throughout the lymphatic system, carrying cells that help fight infection and disease. The submental lymph nodes specifically drain the central lower lip, the floor of the mouth, and the apex of the tongue.

Clinical Significance

Enlargement of the submental lymph nodes, known as lymphadenopathy, can be a sign of infection or disease. This can include oral infections, periodontal disease, or various types of cancer, including oral cancer and lymphoma. In such cases, the lymph nodes may become palpable and tender.

See Also

• Lymphatic system
• Lymph node
• Lymphadenopathy