At what Tanner stage does a male show a testicular volume between 1.6 and 6 ml?

In Tanner staging, which is a system used to assess the sexual maturity in children and adolescents, Tanner Stage II for males is characterized by specific physical changes related to puberty. At this stage, the testes begin to enlarge, typically with a testicular volume ranging between approximately 1.6 and 6 ml. This stage signifies the onset of pubertal changes, such as the elongation of the penis and the development of pubic hair, which are secondary sexual characteristics.

Understanding Tanner Stage II is essential as it marks a significant developmental milestone during adolescence where hormonal changes prompt these physical transformations. It is in this stage that boys will start to experience testicular growth, which is often one of the first signs of puberty.

The other stages describe more advanced levels of development, with Tanner Stage I indicating pre-pubertal status and stages III and IV reflecting further progression in testicular and penile development. Thus, the correct identification of Tanner Stage II as the stage where a male exhibits a testicular volume between 1.6 and 6 ml helps in evaluating and monitoring normal pubertal progression in adolescent males.