3.12: Understand the Roles of Oestrogen and Testosterone in the Development of Secondary Sexual Characteristics

SECONDARY SEXUAL CHARACTERISTICS IN MALES:

FEMALE	EFFECTS OF OESTROGEN
	Development of Breasts
	Growth of Body Hair
	Beginning of Menstrual Cycle

SECONDARY SEXUAL CHARACTERISTICS IN MALES:

MALE	EFFECTS OF TESTOSTERONE
	Growth of Penis and Testes
	Growth of Facial and Body Hair
	Muscle Development
	Voice Breaking
	Sex Drive
	Sperm Production