what is the relationship between an oocyte and a follicle?
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The oocyte enlarges, and the follicular cells divide. A follicle that has two layers of follicular cells is called a primary follicle. These cells continue to hypertrophy and proliferate to form many layers surrounding the oocyte. Eventually these cells become known as 'granulosa' cells.
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Normally, ovarian follicles contain egg cells, which are released during ovulation. In polycystic ovary syndrome, abnormal hormone levels prevent follicles from growing and maturing to release egg cells. Instead, these immature follicles accumulate in the ovaries. Affected women can have 12 or more of these follicles.
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Every mature sized follicle could release an egg, and that egg could become fertilized. If you have two follicles, you could conceive twins. Or you might conceive one baby. Or, you might not conceive at all.
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Solution : Primary oocyte is a diploid cell formed in foetal ovary when the gamete mother cell, oogonia is arrested at prophase-I of meiosis. Secondary oocyte is the haploid cell formed from primary oocyte that completes its first meiotic division, during puberty and produces the female gamete ova(n).
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In women, follicle-stimulating hormone helps to mature the ovarian follicles that release the eggs. Men's bodies use FSH to support the growth and development of sperm. Without the release of FSH, a woman cannot continue her reproductive cycle, as her ovaries will not release an egg.
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Fertilization occurs when the nucleus of both a sperm and an egg fuse to form a diploid cell, known as zygote. The successful fusion of gametes forms a new organism.
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A dominant ovarian follicle refers to the follicle that enlarges to release an ovum during a menstural cycle. Usually approximately 10 Graafian follicles begin to mature where one becomes a dominant follicle and the rest become atretic ovarian follicles.
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Fertilization takes place in the fallopian tubes, which connect the ovaries to the uterus. Fertilization happens when a sperm cell successfully meets an egg cell in the fallopian tube. Once fertilization takes place, this newly fertilized cell is called a zygote.
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In the ovaries of the female reproductive system, an ovarian follicle is a fluid-filled sac that contains an immature egg, or oocyte. These follicles are found in the ovaries. During ovulation, a mature egg is released from a follicle.
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You may feel disappointed when you find out only one or two follicles are big enough to ovulate. However, remember that more isn't necessarily a good thing. Every mature sized follicle could release an egg, and that egg could become fertilized. If you have two follicles, you could conceive twins.
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The egg develops in a follicle which is a small fluid filled cyst within the ovary which grows from 2 to 20 mm in an average of two weeks. Normally there is one egg in each fully grown follicle and often the term "follicles" may be used synonymously with eggs.
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The egg cell, or ovum (plural ova), is the female reproductive cell, or gamete, in most anisogamous organisms (organisms that reproduce sexually with a larger, "female" gamete and a smaller, "male" one).
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Follicles consist of the oocyte (germ cell) surrounded by and forming intercellular connections with specialized somatic cells called granulosa cells, which are in turn surrounded by and make connections with specialized somatic cells called theca cells (Fig. 4.1).
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The Graafian follicle is the stage after the first meiotic division has completed but before ovulation. ... The follicle is characterized by a large follicular antrum that makes up most of the follicle. The secondary oocyte, having undergone the first meiotic division, is located eccentrically.
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Oogenesis. Oogenesis occurs in the outermost layers of the ovaries. As with sperm production, oogenesis starts with a germ cell, called an oogonium (plural: oogonia), but this cell undergoes mitosis to increase in number, eventually resulting in up to one to two million cells in the embryo.
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Oogenesis is the process through which (ova) female gametes are formed and this female gamete is known as an ovum. Spermatogenesis and Oogenesis have following similarities: 1)Both process occurs inside the gonads (testes and ovaries). 2)Both are completed in three phase ; multiplicative, growth and maturation phase.
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Human oocytes pack the mother's DNA into 46 chromosomes. When they divide into eggs -- a process called meiosis -- these 46 chromosomes gather along the midline of the oocyte and are pulled in two directions by spindle fibers. The final product of meiosis is an egg cell with 23 chromosomes.