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James Warren Evans 15 February 1990.

This may cause physical and psychological effects for the affected individual, which could include or pain during an erection.

The and muscles also compress the veins of the corpora cavernosa, limiting the venous drainage of blood.

Waiting for the erection to go away, including techniques for relaxing• The following table shows how common various erection angles are for a standing male.

A male reaches to between his forelegs when erect.

Moore, Keith; Anne Agur 2007.

Erection subsides when parasympathetic stimulation is discontinued; baseline stimulation from the of the autonomic nervous system causes constriction of the penile arteries and cavernosal sinosoids, forcing blood out of the erectile tissue via erection-related veins which include one deep dorsal vein, a pair of cavernosal veins, and two pairs of para-arterial veins between Buck's fascia and the tunica albuginea.

17 inches , while the average circumference of an erect human penis is 11.

Erections are common for children and infants, and even occur before birth.

Erection subsides when parasympathetic activity reduces to baseline.