MICROANATOMY

Detailed explanation-1: -Answer and Explanation: Lymph nodes are densely clustered in all of the following body areas except (a) the brain. The axilla, groin, and cervical regions are the three sites of the largest clusters of lymph nodes. The cervical lymph nodes filter lymph from the head.

Detailed explanation-2: -Where are lymph nodes located? Lymph nodes are located throughout the body, including the neck, armpits, groin, around the gut, and between the lungs. Lymph nodes drain lymph fluid from nearby organs or areas of the body.

Detailed explanation-3: -Lymph nodes are clustered throughout the body in key locations. These include the armpits, neck, groin, upper abdomen, and mediastinum (the area between the lungs that contains all the principal organs of the chest).

Detailed explanation-4: -They are embedded in the popliteal fat. One lies just deep to the popliteal fascia and drains the saphenous vein territory e.g. the superficial regions of the lateral leg and the sole of the foot. A second node lies near the popliteal artery. This receives lymphatic vessels from the knee joint.