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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.
Vasoconstriction can be a contributing factor to erectile dysfunction. [15] An increase in blood flow to the penis causes an erection. Improper vasoconstriction may also play a role in secondary hypertension. [citation needed]
Sexual arousal causes various physical responses, most significantly in the sex organs (genital organs). Sexual arousal for a man is usually indicated by the swelling and erection of the penis when blood fills the corpus cavernosum. This is usually the most prominent and reliable sign of sexual arousal in males.
May improve erectile dysfunction. Nitric oxide is essential to penile function, helping to facilitate erections by signaling blood vessels to widen and smooth muscles in the penis to relax. ED can ...
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.
Oxytocin is another chemical in the feel good cocktail that orgasm produces and one that affects women more so than men—namely because “when female brains develop in utero there are more ...
Odour is sensory stimulation of the olfactory membrane of the nose [1] by a group of molecules. [2] Certain body odours are connected to human sexual attraction. [3] [4] Humans can make use of body odour subconsciously to identify whether a potential mate will pass on favourable traits to their offspring.
Penile erection for men is a vascular event caused by the innervation of both autonomic (sympathetic and parasympathetic) and somatic nervous systems (sensory and motor). [4] Sensory information is received from the genitals towards these nervous systems, in which neurotransmitters such as serotonin , dopamine , noradrenaline , and adrenaline ...
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