The term navicular bone tends to refer to a bone at the top of the foot, located in close proximity to where foot and ankle meet. While most people will now accept this as the location of the bone, a bone in the wrist, most often called the scaphoid bone, used to be called the navicular too.
24 hours is the usual life span of the ovum. That's why it is important to have intercourse in the days just before you ovulate. Sperm should be waiting inside the fallopian tube when the egg is released to increase the odds of getting pregnant.The days just before ovulation are your most fertile days to conceive.4 hours is the usual life span of the ovum. That's why it is important to have intercourse in the days just before you ovulate. Sperm should be waiting inside the fallopian tube when the egg is released to increase the odds of getting pregnant.
In an ideal situation (e.g., healthy/motile sperm, an abundance of fertile-quality cervical mucus), sperm can live about five days inside the vagina and womb. Given this ideal, the duration of the fertile window will be six days: the five days preceding ovulation and the 24 hours following the release of the ovum.