Why does a ovum got follicles in the oviduct?
@ganeshie8 @Mertsj @hartnn @aaronq
@electrokid
your question seems incorrect. Follicles are present in "Ovaries" from which some mature to form "ova" or "eggs"
Yes, but there is got a picture with follicels and spermcells.
oh ok so, this Egg is a mature follicle
I don't understand how foliclles can be in the oviduct.
and the germcell in in this follicle. When this "oocyte" is released during a menstrual cycle, the whole structure contains the nutients required to sustain the "germ cell" within it till the cycle completes and the egg is washed out of the uterus
why not? sperm only need the head to fertilize. but they have a mitochondrion only to help in motion. An egg has so many functions to do, it has to recognize the uterine wall, embed iwthin it, make the necessary preparations for the possible fertilization
Look at this picture.
@electrokid
Is that an egg in the oviduct with follicles?
in the oviduct is a follicle that has the egg
But, an egg only needs one follicel? why he got more?
oviduct = the tube that "connects" ovaries with the uterus follicle = a capsule that contains the egg egg = egg ovaries contain numerous immature follicles. Every menstrual cycle, one of these follicles develops to contain an egg and leaves the ovaries and travels to the uterus. There it waits to get fertilized. If it does, well and good. otherwise, it leaves the body as a dead cell
Yes, but that egg is already in the oviduct?
the follicle development is a specific sequence called as folliculogenesis. http://www.lmgtfy.com/?q=folliculogenesis
egg is In the follicle. That follicle is in the oviduct
the diagram that you are looking at is after the follicle matured, left the ovary and landed in the oviduct
on its way to the uterus
Hmm, in the ovary eggs are created from follicles? And the egg goes to the oviduct, why does the egg in the oviduct than have follicels, because it's already and egg, and do't need follicles anymore?
eggs DO NEED follicles till the end after fertilization, the follicle develops to form the yolk sac and houses the embryo.
a small cell in the follicle develops to the Egg Follicle is a capsule
Okay, and why does an egg got 2 polar bodies?
how many cells do you get at the end of Meiosis?
One egg and two polar bodies.
NO
Meiosis gives you "4" daughter cells.
That is for the spermcells?
no Meiosis if to create ANY germcell. sperm or egg same process. After that we have cell differentiation. This is what separates the things.
in case of female germcells, the secondary oocyte differentiates un-equally. The "egg" gets the major cytoplasm. the other "3" daugher cells get small portions. usually one daughter cell does not get enough nourishment and withers away. The remaining two cells become helper cells for the egg and help during embryogenesis. These two remaining cells are called as "polar bodies" because they are present on the two opposite poles of the follicle.
Thx!
yw
Join our real-time social learning platform and learn together with your friends!