True about Tanner stage 3,
Penis increases in length
Penis increases in width
Scanty hair at the base of the penis
Darkening of scrotum
Tanner staging of sexual maturity in boys STAGE 1 - Testicular volume <3ml(prepubeal) STAGE 2 - Reddening of scrotum, testicular volume reaching 4 ml, scanty hair at penile base. STAGE 3 - Increase in the length of penile shaft, fuher increase in testicular volume, pubic hair begins to curl and darken. STAGE 4 - Increase in the gih of penis and glans, Darkening of scrotum, Coarse abundant and curly pubic hair STAGE 5 - Adult size scrotum and penis, Adult type pubic hair spreading over to medial thighs. Ref: GHAI , 9th edition, Page 61.
General anatomy