In which phase does sexual arousal remain relatively stable?

The plateau phase is characterized by heightened sexual arousal that remains relatively stable before the onset of orgasm. During this phase, physiological responses such as increased heart rate, blood pressure, and muscle tension continue to build, but they do not fluctuate dramatically. This stability allows for enhanced sexual pleasure and anticipation leading into orgasm.

In contrast, the excitement phase is where arousal begins to increase, leading to physiological changes, while ejaculation marks the climax of sexual activity and is associated with a sudden release of tension rather than stability. Myotonia refers to muscle tension that can occur during sexual activity, but it is not a recognized phase of the sexual response cycle in the same context as the others. Thus, the plateau phase is correctly identified as the stage where sexual arousal remains relatively stable.