Tumescence

性反应-女性性反应
The Sexual Response - The Female Response

性反应周期：观察到的模式，非标准模式

1. 兴奋期

膨胀（Tumescence）：
在性兴奋期，性器官充血，也就是它们膨胀（tumescence，自拉丁语：tumescere 肿胀）。在女性，首先和最明显的性兴奋和膨胀的征象是阴道润滑。作为有效性刺激的反应，阴道壁分泌一些清亮的液体，不久液体在整个阴道壁上形成润滑层，为性交做好准备。如果没有这种润滑，阴茎对阴道的插入能使两个性伴都产生疼痛。（在男性，膨胀的相应征象是阴茎勃起。简而言之，当阴茎为进入阴道做好了准备时，阴道为接纳阴茎也做好了准备。）

左：阴道壁“发汗”（沁出渗透液）；右：阴道血管与清亮渗透液（A），阴道肌肉壁（B），润滑性“发汗”（C）。

Left: The “sweating” (transudation) of the vaginal walls. Right: Vaginal blood vessels and clear fluid (A), muscular wall of the vagina (B), lubricating “sweat” (C).

The Response Cycle: An Observed Pattern, not a Norm

1. Excitement

Tumescence:
During sexual excitement, the sex organs become engorged with blood, i.e. they become tumescent (from lat. tumescere: to swell). In females, the first and most obvious sign of sexual excitement and tumescence is the lubrication of the vagina. In response to effective stimulation, the vaginal walls begin to secrete a clear fluid which soon provides a moist coating for the entire vagina in preparation for coitus. Without such lubrication, the insertion of a penis into a vagina could be painful for both partners. (The corresponding sign of tumescence in males is the erection of the penis. In short, as the penis becomes ready to enter the vagina, the vagina becomes ready to receive it).


	[Course 1] [Vagina] [Tumescence] [Tenting Effect]