unds 2

• Penis


  The male organ used in sexual intercourse
• Scrotum


  The loose pouch-like sac of skin that hangs behind and below the penis, containing the testicles, nerves and blood vessels. It acts as a "climate control system" for the testes.
• Testicles (testes)


  Oval organs about the size of large olives that lie in the scrotum, responsible for making testosterone and generating sperm
• Epididymis


  A long, coiled tube that rests on the backside of each testicle, transporting and storing sperm cells, bringing them to maturity
• Vas deferens


  A long, muscular tube that transports mature sperm from the epididymis to the urethra in preparation for ejaculation
• Urethra


  The tube that carries urine from the bladder to outside the body, and also ejaculates semen during orgasm
• Seminal vesicles


  Sac-like pouches that attach to the vas deferens and produce a sugar-rich fluid to provide sperm with energy
• Prostate gland


  A walnut-sized structure below the bladder that contributes fluid to the ejaculate and helps nourish sperm
• Bartholin's glands


  Glands located beside the vaginal opening that produce a fluid (mucus) secretion
• Clitoris


  A small, sensitive protrusion comparable to the penis, covered by a fold of skin (prepuce)
• Vagina


  A canal that joins the cervix to the outside of the body, also known as the birth canal
• Uterus (womb)


  A hollow, pear-shaped organ that is the home to a developing fetus, divided into the cervix and the corpus
• Ovaries


  Small, oval-shaped glands located on either side of the uterus that produce eggs and hormones
• Fallopian tubes


  Narrow tubes attached to the upper part of the uterus that serve as tunnels for ova (egg cells) to travel from the ovaries to the uterus
• Erogenous zones


  Parts of the body that are particularly sensitive to touch, pressure and vibration, contributing to sexual arousal
• Phases of sexual response

  1. Arousal

  2. Plateau

  3. Orgasm

  4. Resolution
• Arousal phase


  Subjective sense of sexual pleasure, with physiological signs of penile tumescence (erection) and vasocongestion in males, and vaginal lubrication and nipple erection in females
• Plateau phase


  A brief period of time before the orgasm, where the body prepares for orgasm
• Orgasm phase


  An intense, highly pleasurable experience with rhythmic muscular contractions in the genitals, expelling semen in males and vaginal fluid in females
• Resolution phase


  A stage where the decrease of arousal (particularly in males) happens, and the genitals resume their unaroused state and shape, with blood pressure, breathing and heart rate returning to normal
• Diversity of sexual behavior

  • Heterosexuality
  • Homosexuality
  • Bisexuality
  • Pansexuality
  • Transsexuality
  • Transgenderism
• Heterosexuality


  Sexual attraction and behaviour directed to the other sex, including more than just male-female intercourse
• Homosexuality


  Romantic and/or sexual attraction between members of the same sex, either male-to-male or female-to-female
• Bisexuality


  Sexuality that can be romantically or sexually attracted to both the opposite sex and the same sex
• Pansexuality


  Sexuality that can be applied to all of the genders that are existing, whether romantically or sexually
• Transsexuality


  People who believe they were born with the body of the other gender and have undergone sexual surgeries or sex change
• Transgenderism


  People who see themselves as belonging to the third gender, including transvestites or cross-dressers
• Methods of contraception


  • Natural contraception
• Natural contraception


  Birth control methods that depend on observations of a woman's body through monitoring and recording different fertility signals during the menstrual cycle
• Penis


  The male organ used in sexual intercourse
• Scrotum


  The loose pouch-like sac of skin that hangs behind and below the penis, containing the testicles
• Testicles (testes)


  Oval organs about the size of large olives that lie in the scrotum, responsible for making testosterone and generating sperm
• Epididymis


  A long, coiled tube that rests on the backside of each testicle, transporting and storing sperm cells produced in the testes, and bringing the sperm to maturity
• Vas deferens


  A long, muscular tube that travels from the epididymis into the pelvic cavity, to just behind the bladder, transporting mature sperm to the urethra in preparation for ejaculation
• Urethra


  The tube that carries urine from the bladder to outside of the body, and also ejaculates semen when the man reaches orgasm
• Seminal vesicles


  Sac-like pouches that attach to the vas deferens near the base of the bladder, producing a sugar-rich fluid (fructose) that provides sperm with energy
• Prostate gland


  A walnut-sized structure located below the urinary bladder in front of the rectum, contributing additional fluid to the ejaculate and helping to nourish the sperm
• Bartholin's glands


  Glands located beside the vaginal opening, producing a fluid (mucus) secretion
• Clitoris


  A small, sensitive protrusion comparable to the penis in males, covered by a fold of skin (prepuce) similar to the foreskin
• Vagina


  A canal that joins the cervix (the lower part of uterus) to the outside of the body, also known as the birth canal