Excitement
Sexual excitement may occur very quickly or build up over a long period of time. In these very early stages arousal may be repressed or ceased altogether by anxieties or distractions, but this becomes increasingly more diffucult as the tension mounts. Also known as the arousal phase, the body becomes stimulated by physical or mental stimulation as it prepares for coitus.
Notable observations
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Erection: the arteries in the penis dilate causing blood to flow into the erectile tissue of the corpus cavernosum and spongiosum in the penis causing it to become tumescent and swell and stiffen.
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Scrotum: the skin thickens.
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Testicles: muscles within the scrotum and the spermatic cords contract to cause the elevation of the testicle.
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Cardiovascular system: heart rate increases as the contractility and force increases, causing an elevation in blood pressure.
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Respiratory system: the rate of respiration increases along with increased heart rate.
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Nipples: although less common in men than women, erection of the nipples occurs in many men.
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Skin: a symptom known as vasocongestion occurs in a number of people. Commonly known as the sex flush, this redness to the skin, often disappears soon after orgasm.
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Muscles: Myotonia occurs in certain groups of muscles and can be voluntary or involuntary.
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References
The information on this page is sourced from:
- https://www.askdrkhaled.com/normal%20male%20sexual%20function/6The%20Male%20Response.htm
- Image is hand produced by authors.
