性反应-性刺激与性反应
The Sexual Response - Stimulus and Response

基本模式：积累张力-骤然释放

性活动使身体产生许多变化，像脉搏增快、血压增高、性器官膨胀、肌肉收缩、腺体分泌和许多其他积累兴奋的征象，直至最终，这种张力以愉悦的、痉挛样反应而释放，这就是众所周知的性高潮。随后，性器官的膨胀会消退，身体恢复到此前的静息状态。

The Basic Pattern: Mounting Tension - Sudden Release

Sexual activity produces many changes in the human body, such as an increase in pulse rate and blood pressure, the swelling of the sex organs (tumescence), muscular contractions, glandular secretions, and many other signs of mounting excitement until, eventually, the tension is released in a pleasurable, seizure-like reaction known as orgasm. As a result, the swelling of the sex organs decreases (detumescence) and the body returns to its former unexcited state.