IMMUNOLOGY

Detailed explanation-1: -Clusters of lymph nodes are found in the neck, axilla (underarm), chest, abdomen, and groin.

Detailed explanation-2: -Lymph nodes are not present in the central nervous system. There are three superficial regions on each side of the body where lymph nodes tend to cluster. These areas are the inguinal nodes in the groin, the axillary nodes in the armpit, and the cervical nodes in the neck.

Detailed explanation-3: -Lymph nodes are found at the convergence of major blood vessels, and an adult will have approximately 800 nodes commonly sited in the neck, axilla, thorax, abdomen, and groin. These filter incoming lymph and play a role in infection as well as in malignancy.

Detailed explanation-4: -Axillary lymph nodes (armpits) Cervical lymph nodes (neck) Inguinal lymph nodes (groin) Mediastinal lymph nodes (in the chest cavity)

Detailed explanation-5: -Lymph contains white blood cells called lymphocytes (LIM-fuh-sites) and chyle (KYE-ul), which is made of fats and proteins from the intestines. This is important because water, proteins, and other substances are always leaking out of tiny blood capillaries into the body tissues around them.