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excitement stage

physiology
Also known as: excitement phase

Quick Summary

The excitement phase is the initial stage of the sexual response cycle. During this phase, physiological changes prepare the body for sexual activity. These include an increased heart rate and blood pressure, more rapid breathing, and increased blood flow to the surface of the body, leading to flushing and swelling of erectile tissues like the penis and breasts. Genital fluids are secreted, and muscle tension generally increases. In males, the penis becomes erect, while in females, the vaginal walls moisten, the inner vagina widens, and the clitoris enlarges.12

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