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.
Many infertility concepts are based on tracking the LH surge, since this heralds the release of the egg, and is your fertile period. The average egg lives only 24 hours, so it needs to be quickly after its release from the ovary. If an ova is to be fertilized, it is usually within 12 hours of ovulation, so the sperm must be ready. The average male ejaculate contains 200-300 million sperm, 60-90% are physically normal -- fewer than 200 of these sperm even get close to the egg, and only one sperm fertilizes the single egg released at ovulation.