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The Tanner scale (also known as the Tanner stages or sexual maturity rating (SMR)) is a scale of physical development as pre-pubescent children transition into adolescence, and then adulthood. The scale defines physical measurements of development based on external primary and secondary sex characteristics , such as the size of the breasts ...
James Mourilyan Tanner (1 August 1920 – 11 August 2010) was a British paediatric endocrinologist who was best known for his development of the Tanner scale, which measures the stages of sexual development during puberty. He was a professor emeritus of the Institute of Child Health at the University of London. [1] [2] [3]
The first physical sign of puberty in females is usually a firm, tender lump under the center of the areola of one or both breasts, occurring on average at about 10½ years of age. [51] This is referred to as thelarche. By the widely used Tanner staging of puberty, this is stage 2 of breast development (stage 1 is a flat, prepubertal breast ...
The Tanner scale for measuring breast maturation during puberty. Main article: Tanner scale Tanner staging can be used to assess the developmental state of the breasts during puberty , from childhood (Tanner stage 1) to adulthood (Tanner stage 5).
English: Male Tanner scale matrix with intact foreskin. In top-left corner there are two symbols: black triangle that represents pubic hair and semioval with semicircle representing penis and scrotum respectively - in other words, rows show development stages of genitals and columns show development stages of pubic hair.
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Starting puberty significantly early — younger than age 8 in girls, 9 in boys — may have health effects lasting into adulthood, including higher risks of breast cancer, diabetes and heart disease.
English: The Tanner scale (also known as the Tanner stages/staging) - Male. The (average) size of the testis [cm] and the capacity in mL The (average) size of the testis [cm] and the capacity in mL Français : Echelle de Tanner - hommes.