The term "lymph nodes" is defined by which combining form?

The term "lymph nodes" is accurately represented by the combining form that is associated with glands or tissues that produce lymphocytes, the immune cells found within the lymphatic system. Lymph nodes play a key role in filtering lymphatic fluid and providing an immune response.

The combining form "lymphaden/o" specifically refers to lymph nodes. The prefix "lymph-" pertains to lymphatic fluid, and the suffix "-aden" indicates a gland or a node. Therefore, the combination effectively conveys the notion of lymphatic glands or nodes responsible for filtering lymph and producing immune responses.

In contrast, the other terms involve different structures. The combining form "lymphangi/o" relates specifically to lymphatic vessels rather than nodes. The forms "mandibul/o" and "maxill/o" pertain to the jaw and upper jawbones, respectively, and do not have relevance to the lymphatic system at all. Thus, the option that correctly designates lymph nodes is "lymphaden/o."