[Campbell Biology P.1083] Which of the following accurately describes events during the plate... | Practice Question

Which of the following accurately describes events during the plateau phase of the human sexual response cycle?

  • A: Vasocongestion is initiated, and the vagina begins to lubricate.
  • B: The uterus elevates, and the outer third of the vagina becomes vasocongested.
  • C: Rhythmic contractions of reproductive structures occur, lasting several seconds.
  • D: Vasocongested organs return to normal size, and muscles relax.

Explanation

The text states that in the plateau phase, 'the outer third of the vagina becomes vasocongested, while the inner two-thirds slightly expands. This change, coupled with the elevation of the uterus, forms a depression for receiving sperm at the back of the vagina.' Options A, C, and D describe events from other phases of the sexual response cycle.