陰道的反應高漲的性興奮會使陰道產生兩個大的變化：
1. 充血，也就是膨脹（tumescence）2. 使陰道腔的上2/3擴張，也就是穹隆效應（tenting effect）。
The Response Cycle: An Observed Pattern, not a Norm
The VaginaMounting sexual excitement produces two major changes in the vagina:
1. An engorgement with blood, i.e. tumescence 2. A widening of the inner two thirds of the vaginal barrel, i.e. a tenting effect.
