Along the pathway, the lymph vessels have at certain points, masses of connective tissue, where lymphocytes are present; these are:
Correct answer: B. Lymph nodes
- A. Lymphoid masses
- B. Lymph nodes
- C. Thymus
- D. Adenoid
Explanation
Several lymphoid masses are present in the walls of digestive tract, in the mucosa and sub-mucosa. The larger masses spleen and thymus, tonsils and adenoids are all lymphoid masses. These produce lymphocytes.
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