Sexual Arousal - Physiological Changes

Physiological Changes

Sexual arousal causes different physical changes, most significantly in the sex organs (genital organs). Sexual arousal for a man is usually indicated by the swelling and erection of the penis when blood fills the corpus cavernosum. This is usually the most prominent and reliable sign of sexual arousal in males. In a woman, sexual arousal leads to increased blood flow to the clitoris and vulva, as well as vaginal transudation - the seeping of moisture through the vaginal walls which serves as lubrication.

In females:

 In males:

  • Erection of nipples
  • Vaginal lubrication
  • Vasocongestion of the vaginal walls
  • Tumescence and erection of the clitoris and labia
  • Elevation of the cervix and uterus, and expansion of the back of the vagina
  • Change in shape, color and size of the labia majora and labia minora
  • Pupil dilation
  • Penile tumescence and erection
  • The veins in the penis may become more prominent
  • Tightening and/or retraction of the foreskin often exposing the glans penis
  • Emission of pre-ejaculatory fluid
  • Swelling of the testes
  • Ascension of the testes
  • Tensing and thickening of the scrotum
  • Pupil dilation

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