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The bulbus glandis (also called a bulb or knot) is an erectile tissue structure on the penis of canid mammals. [1][2][3][4][5][6] During mating, immediately before ejaculation the tissues swell up to lock (tie) the male's penis inside the female. The locking is completed by circular muscles just inside the female's vagina; this is called "the ...
A dog's glans consists of two sections: Behind the lower, long part (pars longa glandis) lies the "knot" (Bulbus glandis) [1] which expands only after penetrating the vagina and causes the male dog to remain inside the bitch ("Tie") for some time after ejaculation (typically between 15 and 30 min).
Male felids are able to urinate backwards by curving the tip of the glans penis backward. [55] [56] In cats, the glans penis is covered with spines. Penile spines also occur on the glans of male and female spotted hyenas. [55] In male dogs the glans penis is smooth and consists of two parts called the bulbus glandis and pars longa glandis. [57]
The bulbourethral glands are compound tubulo-alveolar glands, each approximately the size of a pea in humans. In chimpanzees, they are not visible during dissection, but can be found on microscopic examination. [7] In boars, they are up to 18 cm long and 5 cm in diameter. [6] They are composed of several lobules held together by a fibrous covering.
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 two crura of penis (one crus on each side) constitute the root of penis along with the bulb of penis. The two crura flank the bulb - one to each side of the bulb. Each crus is attached at the angle between the perineal membrane and ischiopubic ramus. The deep artery of the penis enters the anterior portion of the crus.
Corona of glans overhanging the neck of the erect and aroused penis. The corona of glans penis (or, directly from the Latin, the corona glandis penis[1]) or penis crown refers to the rounded projecting border or flare that forms at the base of the glans in human males. The corona overhangs a mucosal surface, known as the neck of the penis ...
Genitorinary system of a male raccoon (Procyon lotor) Canine penises have a structure at the base called the bulbus glandis. [22] [23] During copulation, the spotted hyena inserts his penis through the female's pseudo-penis instead of directly through the vagina, which is blocked by the false scrotum.