Penis etc.

性反应-男性性反应
The Sexual Response - The Male Response

性反应周期:观察到的模式,非标准模式

2.平台期

阴茎与睾丸等器官的变化
在平台期,勃起的阴茎此刻没有大的新变化。然而,睾丸却显著地膨大,而且被拉升靠近腹部。

尿道球腺的变化
尿道球腺分泌一些可能显露在阴茎顶端的清亮液珠。(这种液珠里可能含有一些游离的精子。想要避孕的夫妇应该铭记这一事实。)

性红晕
早先提及到的性红晕此刻可能首次出现,或如果在此之前已经出现的话,就变得更加明显。再复述一遍,我们应该记住,不是所有的男性都有性红晕出现,某些人出现只是偶尔现象。

肌肉张力、脉搏频率和血压的变化
伴随逐渐增加的性刺激,包括随意肌和不随意肌的全身肌肉张力增强。同时,脉搏频率和血压持续加快和升高,呼吸加快。

乳头勃起
乳头勃起也是事实。但是,如果乳头在平台期会有勃起的话,这种状态将维持到其余的性反应阶段。

The Response Cycle: An Observed Pattern, not a Norm

2. Plateau

Penis and Testicles
During the plateau phase, the now erect penis does not undergo any new major changes. However, the testicles swell noticeably and are pulled close to the abdomen.

The Bulbourethral (Cowper's) Glands
The bulbourethral (Cowper's) glands secrete a few drops of a clear liquid which may appear at the tip of the penis. (Such a drop may contain some stray sperm cells. This fact should be remembered by couples who want to avoid pregnancy.)

Sex Flush
The sex flush mentioned earlier may now appear for the first time or, if it had been visible before, grow more obvious. Again, it should be remembered that not all men show a sex flush, and that some show it only occasionally.

Muscular Tension, Pulse Rate and Blood Pressure
With increasing sexual stimulation, the entire body experiences an increase in muscular tension, both voluntary and involuntary. At the same time, the pulse rate and blood pressure continue to rise, and breathing becomes faster.

Erection of Nipples
The same is true for the erection of the nipples. However, if the nipples should become erect during the plateau phase, they will remain so through the other phases.

[Course 1] [2. Plateau] [Penis etc.]