2007-02-12 22:59:13 · 2 answers · asked by Anonymous in Science & Mathematics ➔ Biology
Eliminates the slow swimmers in the sperm gene pool. Only the strong survive.
2007-02-12 23:04:15 · answer #1 · answered by Labsci 7 · 1⤊ 0⤋
Other cells in the tube's inner lining or endothelium nourish the egg and lubricate it's path during its stay inside the fallopian tube. Once inside the fallopian tube, the egg and sperm meet and the egg is fertilized. During its week-long journey through the fallopian tube, a fertilized egg is nourished by cells lining the tubal lumen while the egg divides many times. When the outer membrane of the egg breaks apart, allowing the embryo to "hatch", it is able to implant itself into the uterine lining or endometrium. Implantation usually occurs about 1 week after ovulation. If an egg doesn't become fertilized within 24 to 36 hours after ovulation, it will deteriorate and be removed by the body's immune system like any other dead cell in the body.
2007-02-19 09:51:57 · answer #2 · answered by ATP-Man 7 · 0⤊ 0⤋