small medium sized lymphatic vessels has

Correct Answer: B

Rationale: Small to medium lymphatic vessels have thin walls to facilitate lymph flow, but diameter and lumen size vary, so not all apply.

Correct Answer: C

Rationale: Lingual tonsils are lined by stratified squamous epithelium, not pseudostratified (A is incorrect); adenoids refer to pharyngeal tonsils ; they have crypts and are non-capsulated (C is correct).

Correct Answer: C

Rationale: Paracortex venules are lined with cuboidal (high) endothelium ; it's T-lymphocyte-rich, not B , and not between spleen structures or lined with plasma cells .

Correct Answer: A

Rationale: NK cells are innate immune cells from a lymphoid progenitor; they're not adaptive (C, D) and not myeloid-derived .

Correct Answer: B

Rationale: PRRs (pattern recognition receptors) recognize PAMPs and DAMPs as danger signals ; C is a subset, A and D are incorrect.