The document summarizes key anatomical structures in human sexuality, including both male and female genitals. It describes the penis, scrotum, testicles, and internal male reproductive organs. It also outlines the vulva, vagina, uterus, ovaries and their functions. Key structures are defined such as the glans, frenulum, labia, clitoris, G-spot, and cervix. Menstruation and the menstrual cycle are also briefly covered. Diagrams are referenced throughout to illustrate the anatomical structures.

1. Human Sexuality Chapter 2