Puberty
A period of rapid skeletal and sexual maturation that occurs mainly in early adolescence
Androgens
The class of sex hormones that predominate in males produced by the testes in males and by the adrenal glands in both males and females
Estrogens
The class of sex hormones that predominate in females, produced mainly by the ovaries
Emerging Adulthood
The transitional period from adolescence to adulthood, spanning approximately 18 to 25 years of age
Sex
The properties of a person that determine his or her classification as male or female
Sex Chromosomes
In humans, the pair of genes that differs between the sexes and determines a person’s sex as male or female
Gonads
Glands that produce sex hormones and generate ova (eggs) in females and sperm in males; collectively called gametes, the ova and sperm are the cells that eventually will be used in reproduction
Secondary Sex Characteristics
Traits that differ between the two sexes but are not part of the reproductive system; they include breasts in females and facial hair in males
Relational Aggression
Behavior that is meant to harm the social standing of another person
Human Sexual Response Pattern
Masters and Johnson’s model of human sexual response, consisting of four phases: excitement, plateau, orgasm, and resolution