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.
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.perm can live up to 72 hours once ejaculated. Sometimes the egg is found within 45 minutes for fertilization, while sometimes it can take as long as 12 hours. If the egg isn't yet released from the ovary, it is thought that the sperm can go into a holding pattern for about 24-48 hours while awaiting release of the egg.