Identify the three conditions necessary for conception, and at least three methods of contraception, identifying the necessary condition that each of these methods disrupts

Question

What will be an ideal response?

Answer 1

Answer: Conception requires: (1) a viable egg; (2) a viable sperm; and (3) access to the egg by the sperm. Examples of methods of contraception and the necessary condition they disrupt would include:
• Hormonal birth control methods that suppress ovulation are effective in altering condition (1), the viable egg. Moreover, fertility awareness methods attempt to ensure that a viable egg is not present in the woman's reproductive tract at the same time as viable sperm.
• Although many conditions—such as exposure to heat or certain medications—can alter the health, number, and motility of sperm, no reliable method of contraception currently exists to safely and effectively oppose condition (2), the viable sperm.
• Male sterilization prevents sperm from entering the ejaculatory duct. Female sterilization, withdrawal, and barrier methods such as male and female condoms and spermicide all prevent an encounter between viable sperm and viable egg. These methods alter condition (3), access. In addition, IUDs are thought to block fertilization by affecting the movement of egg and sperm.