the thymus reaches its maximal size at the age of puberty.
the thymus reaches its maximal size at the age of puberty.
at what age does the thymus reach its maximal size?
puberty
the thymus continues to grow after the birth reaching the maximum size by the end of the first year of life. after that its activity decreases sharply, which is called thymic involution. after the first year of life the thymic peri-vascular space grows proportionally in volume while the true thymic epithelial space decreases in size. in addition the connective tissue fills a part of the thymic volume. the process continues to proceed slowly after puberty – thymus decreases both in size and activity as the thymic peri-vascular space and connective tissue is replaced with fat (a phenomenon known as "organ involution"). the atrophy is due to the increased circulating level of sex hormones, and chemical or physical castration of an adult results in the thymus increasing in size and activity. fat cells are first visible in the walls between lobules, and then slowly spread throughout the cortex and then medulla.
thymus
bullet::::- "thymus citriodorus" ("thymus × citriodorus") syn. "t. fragrantissimus", "t. serpyllum citratus", "t. serpyllum citriodorum". – citrus thyme









































bullet::::- "thymus comosus"









































bullet::::- "thymus comptus"









































bullet::::- "thymus curtus"









































bullet::::- "thymus decussatus"









































bullet::::- "thymus disjunctus"









































bullet::::- "thymus doerfleri"









































bullet::::- "thymus glabrescens"









































bullet::::- "thymus herba-barona"









































bullet::::- "thymus hirsutus"









































bullet::::- "thymus hyemalis"









































bullet::::- "thymus inaequalis"









































bullet::::- "thymus integer"









































bullet::::- "thymus lanuginosus", syn. "t. serpyllum" – woolly thyme









































bullet::::- "thymus leucospermus"









































bullet::::- "thymus leucotrichus"









































bullet::::- "thymus longicaulis"









































bullet::::- "thymus longiflorus"









































bullet::::- "thymus mandschuricus"









































bullet::::- "thymus marschallianus"









































bullet::::- "thymus mastichina"









































bullet::::- "thymus membranaceus"









































bullet::::- "thymus mongolicus"









































bullet::::- "thymus moroderi"









































bullet::::- "thymus nervulosus"









































bullet::::- "thymus nummularis"
thymus (plant)