Question

The diagram of the human lymphatic system is depicted here with few parts labelled i to v. Find their correct match from the options below.

• A. i - Spleen, ii - Tonsils, iii - Lymph nodes, iv - Thymus, v - Lymphatic vessels
• B. i - Tonsils, ii - Thymus, iii - Lymph nodes, iv - Spleen, v - Lymphatic vessels
• C. i - Peyer’s patches, ii - , iii - Lymph nodes, iv - Spleen, v - Lymphatic vessels
• D. i - Thymus, ii - Tonsils, iii - Lymph nodes, iv - Spleen, v - Lymphatic vessels

Answer 1

The correct option is B i - Tonsils, ii - Thymus, iii - Lymph nodes, iv - Spleen, v - Lymphatic vessels

The structures labelled in the diagram are as follows :
i - Tonsils - soft tissue found on the back side of throat, one on each side and are a part of lymphatic system, rich in lymphocytes
ii - Thymus - an endocrine gland in the chest region beneath the breast bone, helps T lymphocytes to attain maturity. It is a primary lymphoid organ.
iii - Lymph nodes are small structures that serve to trap the microorganisms or antigen moving in lymph.
iv - Spleen is a bean - shaped organ, filters blood by trapping blood - borne microorganisms and removing old and damaged RBCs. Also called as the ‘graveyard of RBCs’
v - Lymphatic vessel are tubes through which lymph flows