Breast: Anatomy, Development, Function, and Sexual Meaning
A breast is soft chest tissue containing fat, mammary glands, milk ducts, nerves, a nipple, and an areola, with roles in lactation, sensation, and body development.
Secondary Sex Characteristics: Meaning and Puberty Changes
Secondary sex characteristics are hormone-influenced physical traits that usually develop during puberty, such as breasts, facial hair, voice changes, and body-shape differences.