Adrenarche refers to a type of secondary sexual characteristic where the adrenal glands mature. 

Adrenarche

During puberty, a number of physical changes occur that signal sexual maturation. Which of the following changes is a sign of this maturation but is NOT directly involved in the biological process of reproduction?

Secondary sexual characteristics are the physical signs of sexual maturation that are not directly involved in reproduction. These characteristics develop during puberty and include the development of breasts and hips in females, and the growth of facial hair and a deepening voice in males.

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Despite the considerable variance between adolescents in the onset and pace of puberty, the sequence of physical changes themselves are predictable. These changes can be divided into two categories: 

- Primary Sexual Characteristics 
- Secondary Sexual Characteristics

Physical Development During Adolescence 

Spielman, R. M., Jenkins, W. J., & Lovett, M. D. (2020, April 22). Psychology (2nd ed.). OpenStax. https://openstax.org/books/psychology-2e/pages/1-introduction

OpenStax Psychology (2nd ed.) Textbook

Primary sexual characteristics are the organs that are specifically required for reproduction. During puberty, these characteristics develop and mature. Examples include the uterus and ovaries in females, and the testes in males.

Primary Sexual Characteristics

Puberty is the transitional process of physical changes through which a child's body matures into an adult body capable of sexual reproduction. While the sequence of these physical changes is predictable, the timing of onset and the pace of development can vary significantly among individuals.

Puberty

Gonadarche is a key physical change during puberty characterized by the maturation of the sex glands (gonads).

Gonadarche

Secondary Sexual Characteristics

Analyze the following scenario and explain why Jordan's concern about being 'behind' in their physical development might be unfounded.

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