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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.
The bulb of penis is the proximal/posterior bulged [1] end of the (unpaired median) corpus spongiosum penis. Together with the two crura (one crus on each side of the bulb), it constitutes the root of the penis. [2] It is covered by the bulbospongiosus. Proximally/posteriorly, the bulb of penis extends towards the perineal body. The bulb ...
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.
They continue into the dorsal aspect of the shaft forming the two corpora cavernosa that are separated by the septum of the penis. [5] During arousal, the root and the corpora cavernosa engorge with blood and become rigid . Meanwhile, the corpus spongiosum remains pliable making the urethra a viable channel for semen during ejaculation. [6]
The function of the corpus spongiosum in erection is to prevent the urethra from pinching closed, thereby maintaining the urethra as a viable channel for ejaculation. To do this, the corpus spongiosum remains pliable during erection while the corpora cavernosa penis become engorged with blood.
The tunica albuginea is the fibrous envelope that extends the length of the corpus cavernosum penis and corpus spongiosum penis. It is a bi-layered structure that includes an outer longitudinal layer and an inner circular layer. [1]
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 ]
cp. Elevation which becomes clitoris or penis (genital tubercle) cc. Corpus cavernosum clitoridis: cp. Corpus cavernosum penis cut short ug. Sinus urogenitalis: C. Greater vestibular gland, and immediately above it the urethra: C. Bulbourethral gland of one side f. Abdominal opening of the left uterine tube: g. Round ligament, corresponding to ...