Lymphoid tissue reaches twice its adult size during which age range?

• A. Ages 8-10
• B. Ages 10-12
• C. Ages 12-14
• D. Ages 14-16

Answer: (B)

Lymphoid tissue follows a growth pattern tied to immune system development, expanding to support increasing immune activity in children and then gradually shrinking as puberty approaches. The period when lymphoid structures are notably larger than in adults—about twice their adult size—occurs around preadolescence, roughly ages 10 to 12. After this window, the tissues begin to involute toward adult dimensions as maturation proceeds. That’s why this age range best fits the idea of lymphoid tissue reaching twice its adult size. Earlier ages may show ongoing growth, while later ages move into the involution phase.