All characters of lymph Node Capsule except

Correct Answer: D

Rationale: Lymph node capsule has smooth muscle at hilum , adipose tissue , and is pierced by afferent vessels ; it divides into cortex and medulla, but not regularly (D is incorrect).

Correct Answer: D

Rationale: Epithelial reticular cells have tonofilaments and desmosomes for structural support.

Correct Answer: A

Rationale: Thymus-dependent zone in spleen is the periarteriolar lymphatic sheath (PALS) around the central arteriole .

Correct Answer: A

Rationale: Hyperinflation results from loss of lung elasticity , as in emphysema; fibrosis (B, C) restricts expansion, bronchiectasis causes dilation, not hyperinflation.

Correct Answer: A

Rationale: APCs use B7 to bind CD28 on T cells for co-stimulation ; CD4/CD8 (B, C) are T-cell co-receptors, CD40 is for B cells.