In which of the following areas are lymph nodes usually highly concentrated?

• A. Feet.
• B. Chest.
• C. Hands.
• D. Neck.

Answer: (D)

Verified step by step guidance

1. Understand the function of lymph nodes: Lymph nodes are small, bean-shaped structures that are part of the lymphatic system. They filter lymph fluid and house immune cells that help fight infection.
2. Identify common locations of lymph nodes: Lymph nodes are typically found in clusters in areas where the body can effectively monitor and respond to pathogens. These areas include the neck, armpits, chest, abdomen, and groin.
3. Consider the anatomical significance of the neck: The neck is a crucial area for lymph nodes because it connects the head to the rest of the body, allowing for efficient monitoring of pathogens entering through the mouth, nose, and ears.
4. Compare the concentration of lymph nodes in the neck to other areas: While lymph nodes are present throughout the body, they are particularly concentrated in the neck due to its role in filtering lymph from the head and upper respiratory tract.
5. Conclude why the neck is the correct answer: Given the high concentration of lymph nodes in the neck, it is the most likely area among the options provided where lymph nodes are highly concentrated.