In the second stage, the primary follicles develop into secondary and eventually tertiary, or graafian follicles.

第二阶段，初级卵形成次级卵，最终形成第三极卵，即格拉夫卵。

FSH is produced by the body to stimulate the follicles in the ovaries that produce eggs.

卵刺激素由体内产，以刺激卵巢中的卵产卵子。

Progesterone is produced by the empty follicle in the ovary.

黄体酮是由卵巢中的空卵产的。

The presence of high levels of FSH indicates lower numbers of eggs.

高数值卵刺激素则意味着更少的卵子。

The follicles respond by pumping out estrogen.

卵的成熟，会进一步促进雌性激素的分泌。

When they reach the ovaries, they encourage the internal egg cells to grow and mature.

当它们到达卵巢后，会促进子卵巢内卵的发育和成熟。

The protein follistatin, has an antagonist effect to myostatin, diminishing myostatin's muscle limiting effect.

卵抑素蛋白肌抑素存在拮抗作用，它能降低肌抑素对肌肉的限制。

All the developing follicles secrete loads of estrogen, which negatively inhibits pituitary FSH.

所有发育中的卵分泌足量的雌激素，通过负反馈作用抑制垂体分泌FSH。

In females, the theca cells respond to luteinizing hormone by producing progesterone and androstenedione.

在女性中，卵膜细胞对促黄体成素产反应，从而产孕酮和雄烯二酮。

These hormones travel to the follicles within the ovaries.

这些激素最终进入卵巢内的卵中。

The follicles are small clusters of granulosa and theca cells that protect the developing egg cell.

卵是由颗粒细胞、卵膜细胞组成的小簇，保护发育中的卵细胞。

These are follicle stimulating hormone, or FSH, and luteinizing hormone, or LH.

这包括卵刺激素（FSH）、促黄体成素（LH）。

There are two other hormones also involved — the follicle-stimulating hormone, or FSH, and the luteinizing hormone, or LH.

另外还有两种激素——促卵激素（FSH）和黄体成素（LH）。

FSH causes the egg to mature in the ovary, and it also stimulates the ovaries to release estrogen.

促卵刺激素使卵子在卵巢成熟，同时也刺激卵巢释放雌激素。

Fertility experts regard a high FSH level as a key indicator of having a low egg count.

育专家将卵刺激素的数值作为重要指标来衡量女性体内卵子数量，数值高则卵子数量少。

Each follicle contains one egg, and on average, only one follicle becomes fully mature.

每个卵含有一个卵子，平均只有一个卵完全成熟。

The estrogen then stops FSH being produced, so that only one egg matures in the cycle.

然后雌激素会阻止卵刺激素的产，这样在一个周期内只有一个卵子成熟。

At birth, a woman has millions of follicles, each ready and excited to do its job.

女性在出时，体内就有数以百万计的卵，每个卵都跃跃欲试，准备完成它的工作。

The last kind of functional cysts are theca lutein cysts.

最后一种功能性囊肿，是卵膜黄素囊肿。

First, there are functional cysts, which result when the normal, cyclic development of the ovarian follicles is disrupted.

第一类是功能性囊肿，由正常、周期性的卵发育过程被打乱而导致。