Which best describes lymph nodes?

Question

Quizplus · Accepted Answer

Lymph nodes are concentrated at areas where appendages join the thorax, such as the armpits, groin, and neck.

Answer: D
 Lymph nodes are considered primary or central lymphoid organs, along with the bone marrow and thymus. They are responsible for filtering lymph and helping to form immune responses.

Therefore, choices A and C are incorrect because lymph nodes do not line the interior of small blood vessels and are not approximately 12 cm in size.

Which Best Describes Lymph Nodes