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An erection (clinically: penile erection or penile tumescence) is a physiological phenomenon in which the penis becomes firm, engorged, and enlarged. Penile erection is the result of a complex interaction of psychological, neural, vascular, and endocrine factors, and is often associated with sexual arousal, sexual attraction or libido, although erections can also be spontaneous.
An erection is the stiffening expansion and orthogonal reorientation of the penis, which occurs during sexual arousal. Erections can occur in non-sexual situations; spontaneous non-sexual erections frequently occur during adolescence and sleep. In its flaccid state, the penis is smaller, gives to pressure, and the glans is covered by the foreskin.
Erections, also known colloquially as “boners,” occur when a man is sexually aroused and blood vessels in the penis open up and fill with blood, according to the Cleveland Clinic. This hardens ...
After their mid-forties, some men report that they do not always have an erection when they are sexually aroused. [9] Equally, a male erection can occur during sleep (nocturnal penile tumescence) without conscious sexual arousal or due to mechanical stimulation (e.g., rubbing against the bed sheet) alone. A young man—or one with a strong ...
At this point, if the subject was being sexually stimulated, orgasm and ejaculation would typically occur. After maximum erection is obtained, the subject’s penis subsequently becomes flaccid again (3:55). Also visible in this demonstration are the tightening of the subject’s scrotum and the elevating of his testicles during arousal.
3. Urinate. Fun fact: A full bladder pushes against the sacral nerve, which causes an erection. This is why men wake up with boners (aka morning wood).
On the contrary, stuttering priapism can occur spontaneously at any time of the day, but more commonly so during REM sleep. SP is a subtype of ischemic priapism that is characterized by recurrent, self-limiting, painful erections that often require maneuvers (compression, cold packs or a cold shower, voiding, or exercise, etc.) to aid detumescence.
Clitoral erection (also known as clitoral tumescence or female erection) [1] [2] is a physiological phenomenon where the clitoris becomes enlarged and firm. Clitoral erection is the result of a complex interaction of psychological, neural, vascular, and endocrine factors, and is usually, though not exclusively, associated with sexual arousal .
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