Answer:
Step-by-step explanation:
A submandibular lymph node is a lymph node located under the lower edge of the jawbone, in the submandibular region. These lymph nodes are part of the body's lymphatic system, which is a network of tissues and organs that help to remove toxins, waste, and other unwanted materials from the body. Lymph nodes are small, bean-shaped structures that act as filters for the lymphatic fluid, which contains white blood cells, and they play a crucial role in the body's immune system by helping to fight infections and diseases. The submandibular lymph nodes are responsible for draining lymphatic fluid from the tongue, mouth, lips, cheeks, and part of the nose, and they may become swollen and tender in response to an infection or disease in these areas. Swollen submandibular lymph nodes can be a symptom of various conditions, such as dental infections, tonsillitis, and certain types of cancer.