is noncapsulated with aggregation of lymphocyte

Correct Answer: B

Rationale: Lymphatic nodules are non-capsulated lymphocyte aggregations; diffuse lymphocytes are scattered, not aggregated.

Correct Answer: A

Rationale: Thymus cortex contains lymphoblasts (immature) externally and mature T-lymphocytes internally.

Correct Answer: D

Rationale: Palatine tonsils have nodules and diffuse tissue ; they're in the oropharynx (not nasopharynx, A), non-keratinized , glands open at crypt surfaces (C is incorrect).

Correct Answer: C

Rationale: Goblet cells primarily produce mucus in the respiratory tract; they lack cilia , P450 enzymes , or surfactant (D, alveolar cells).

Correct Answer: D

Rationale: MHC II presents exogenous peptides to CD4+ Th cells ; endogenous and killer T cells are MHC I, not on all cells .