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Among all primates, the human penis is the largest in girth, but is comparable to the chimpanzee penis and the penises of certain other primates in length. [13] Penis size is affected by genetics , but also by environmental factors such as fertility medications [ 14 ] [ unreliable medical source? ] and chemical/pollution exposure.
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.
Male sexual arousal. On the left, the male genitalia are in regular, flaccid state. On the right, the male is sexually aroused, the penis is erect and the scrotum is tense. Erection of nipples; Penile tumescence and erection; The veins in the penis may become more prominent; Tightening and/or retraction of the foreskin often exposing the glans ...
a small portable computer connected to two bands placed around the shaft of the penis which records penile tumescence, a band of paper tape with perforations (similar to coil postage stamps) that is fit snugly around the shaft of the penis and will break at the perforations during penile tumescence.
Penile penetration of the vagina with the glans of the penis touching the G-spot Well perfused labia and clitoral erection. Whether or not the clitoral glans is stimulated by the penis depends on the clitoris–urethral-meatus distance (CUMD) and on the positions and movements. Painting from the Kamasutra: Coitus with nipple stimulation
Erectile tissue is tissue in the body with numerous vascular spaces, or cavernous tissue, that may become engorged with blood. [1] [2] However, tissue that is devoid of or otherwise lacking erectile tissue (such as the labia minora, vestibule, vagina and urethra) may also be described as engorging with blood, often with regard to sexual arousal.
Erectile dysfunction (ED), also referred to as impotence, is a form of sexual dysfunction in males characterized by the persistent or recurring inability to achieve or maintain a penile erection with sufficient rigidity and duration for satisfactory sexual activity.
Boner's Ark, a comic strip about a sailing ship filled with animals; Other uses. Boner, a slang term for an erection; Boner, a slang term for an error;