Since the Titan is such an all-inclusive sex toy for both individuals and couples, the chances of it remaining on your nightstand are high and thus, the discretion of the overall design is quite convenient. It must be combined with adequate thrusting to be successful. A series of muscular contractions delivers semen, containing male gametes known as sperm cells or spermatozoa , from the penis. It can be felt as a hardened lump or "vein" even when the penis is flaccid, and is even more prominent during an erection.
It has been shown that the deeper the thrusting, the larger the semen displacement. Since the Titan is such an all-inclusive sex toy for both individuals and couples, the chances of it remaining on your nightstand are high and thus, the discretion of the overall design is quite convenient. Ejaculation has two phases: It can be felt as a hardened lump or "vein" even when the penis is flaccid, and is even more prominent during an erection. In diabetes , peripheral neuropathy can cause tingling in the penile skin and possibly reduced or completely absent sensation. A popping or cracking sound and pain is normally associated with this event. Ejaculates can travel up to centimetres at a time which, when combined with its placement at the highest point of the vaginal tract, acts to increase a male's chances that an egg will be fertilised by his sperm as opposed to a potential rival male's sperm , thus maximising his paternal certainty. However, males have to ensure they do not displace their own sperm. Female phenotypic quality A female's phenotypic quality is a key determinant of a male's ejaculate investment. Despite atrophy of blood vessels and nerves, the arteries , veins , nerves and the corpora spongiosa were successfully matched. Anejaculation is the condition of being unable to ejaculate. A series of muscular contractions delivers semen, containing male gametes known as sperm cells or spermatozoa , from the penis. Circumcision causes the coronal ridge to be more pronounced, and it has been hypothesised that this could enhance semen displacement. The human testicles are moderately sized when compared to other animals such as gorillas and chimpanzees, placing somewhere midway. Priapism lasting over four hours is a medical emergency. It is usually the result of sexual stimulation , which may include prostate stimulation. Another reason for this adaptation is due to the nature of the human posture, gravity creates vulnerability for semen loss. This study shows that in the future it could be possible to produce artificial penises for replacement surgeries or phalloplasties. However, that is usually only the case if the organ is broke out and injured because of it. The causative mechanisms are poorly understood but involve complex neurological and vascular factors. A variety of treatments exist, most notably including the phosphodiesterase type 5 inhibitor drugs such as sildenafil citrate, marketed as Viagra , which work by vasodilation. Prompt medical attention lowers the likelihood of permanent penile curvature. Ejaculation may occur spontaneously during sleep known as a nocturnal emission or wet dream. Penile fracture can occur if the erect penis is bent excessively. Diphallia , or penile duplication PD , is the condition of having two penises.
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