2006-06-21 00:16:51 · 6 answers · asked by sky 1 in Science & Mathematics ➔ Biology
Ovulation is the release of a oocyte (precursor to a egg cell) from the ovaries to fallopian tubes. Within the fallopian tubes the oocyte is fertilized and becomes a ovum which in turn becomes a zygote and then a fetus.
When one is pregnant hormone levels are kept at high levels which prevents the events which trigger ovulation.
This makes sense because the mother already has a fertilized egg and must now concentrate her resources to the developing fetus.
If estrogen and progesterone levels drop it will cause FSH and LH (these are all hormones) levels to rise and begin the cycle again. If this occurs it can result in a spontaneous natural abortion of an already fertilized zygote.
2006-06-21 00:28:56 · answer #1 · answered by kennvus 2 · 0⤊ 0⤋
during pregnancy the levels of hormones "progesterone " and "estrogen " are high and they inhibit follicle stimulating hormone . so the new follicle does not develop so no ovulation
2006-06-21 00:22:53 · answer #2 · answered by abhinav m 1 · 0⤊ 0⤋
because your periods have stopped cause when you did ovulate and you released and egg and it meet up with a sperm it implanted into the womb and you are pregnant so you cannot ovulate when you are already pregnant
2006-06-21 00:21:22 · answer #3 · answered by Anonymous · 0⤊ 0⤋
because fsh(follicle stimulating horomone) is not being produced by the pituitary gland to tell a message to the ovary to make another egg.
2006-06-21 13:10:08 · answer #4 · answered by boricua82991 3 · 0⤊ 0⤋
because you already have a fertilized egg and your hormones change stopping the production of eggs.
2006-06-21 00:20:21 · answer #5 · answered by Stacy R 6 · 0⤊ 0⤋
there is no need for it.
2006-06-21 00:50:13 · answer #6 · answered by Anonymous · 0⤊ 0⤋