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A corpus cavernosum penis (singular) (from Latin, characterised by "cavities/ hollows" [2] of the penis, pl.: corpora cavernosa) is one of a pair of sponge-like regions of erectile tissue, which contain most of the blood in the penis of several animals during an erection.
Erectile tissue exists in external genitals such as the corpora cavernosa of the penis and their homologs in the clitoris, also called the corpora cavernosa. [2] During penile or clitoral erection , the corpora cavernosa will become engorged with arterial blood, a process called tumescence . [ 3 ]
The body or shaft of the penis is the free portion of the human penis that is located outside of the pelvic cavity. [1] It is the continuation of the internal root, which is embedded in the pelvis and extends to the glans. [2] It is made up of the two corpora cavernosa and the corpus spongiosum on the underside.
In human male anatomy, the radix (/ r eɪ. d ɪ k s /) [1] or root of the penis is the internal and most proximal portion of the human penis that lies in the perineum.Unlike the pendulous body of the penis, which is suspended from the pubic symphysis, the root is attached to the pubic arch of the pelvis and is not visible externally.
Penile discharge is liquid from the urethra at the end of the penis that is not urine or semen. [2] The dripping of clear fluid (pre-ejaculate) when sexually excited is normal. [2] There may be pain or burning when passing urine, soreness inside the penis or feeling of wanting to pass urine frequently. [6]
The corpora cavernosa are innervated by lesser and greater cavernous nerves and form most of the penis containing blood vessels that fill with blood to help make an erection. [8] The crura are the proximal parts of the corpora cavernosa. The corpus spongiosum is an erectile tissue surrounding the urethra.
Figure 1: Normal penile anatomy, dorsal and cross-sectional view showing two hypoechoic images corresponding to the corpora cavernosa, with an echoic line that surrounds them and corresponds to the tunica albuginea. Figure 2: Longitudinal section of the penis under right lateral access.
One study analysing the self-reported Kinsey data set found that the average penis of a homosexual man was larger than the average penis of their heterosexual counterparts (6.32 inches [16.05 cm] in length amongst gay men versus 5.99 in [15.21 cm] in heterosexuals, and 4.95 inches [12.57 cm] circumference amongst gay men versus 4.80 in [12.19 ...