| Zinn's corona | <anatomy, nerve> A network of branches of the short ciliary arteries on the sclera around the point of entrance of the optic nerve. Synonym: circulus vasculosus nervi optici, circulus arteriosus halleri, circulus zinnii, Haller's circle, Zinn's corona, Zinn's vascular circle. (05 Mar 2000) |
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| zona corona | An irregularly disposed collection of visible veins seen in the skin of people usually of or past middle age; it has no specific connection with any deep structure, such as the diaphragm, and no necessary connection with underlying visceral disease. Synonym: zona corona. (05 Mar 2000) |
| arteria bulbi penis | A branch of the internal pudendal artery which supplies the bulb of the penis including the bulbar urethra. Synonym: arteria bulbi penis, arteria bulbi urethrae. (05 Mar 2000) |
| arteria dorsalis penis | The dorsal terminal branch of the internal pudendal artery in the male. Synonym: arteria dorsalis penis. (05 Mar 2000) |
| arteriae helicinae penis | The coiled terminal branches of the deep and dorsal arteries of the penis. Parasympathetic stimulation causes them to uncoil, allowing blood at arterial pressure to fill the cavernous tissue causing erection. Synonym: arteriae helicinae penis. (05 Mar 2000) |
| arteria profunda penis | Origin, terminal branch (with dorsal artery of penis) of the internal pudendal artery; distribution, corpus cavernosum of the penis via capillary beds and via helcine arteries and arteriovenous anastomoses to produce erection. Synonym: arteria profunda penis. (05 Mar 2000) |
| arteries of penis | See: dorsal artery of penis, deep artery of penis. (05 Mar 2000) |
| artery of bulb of penis | A branch of the internal pudendal artery which supplies the bulb of the penis including the bulbar urethra. Synonym: arteria bulbi penis, arteria bulbi urethrae. (05 Mar 2000) |
| bifid penis | A rare congenital anomaly in which the penis is partly or completely duplicated; may be symmetrical, or placed one above the other; often there are associated urogenital or other anomalies; occurs when two genital tubercles develop. May also be associated with exstrophy of the urinary bladder. Synonym: bifid penis. Origin: G. Di-, two, + phallos, penis (05 Mar 2000) |
| body of penis | The free pendulous portion of the penis, consisting of shaft and glans penis. Synonym: corpus penis, scapus penis. (05 Mar 2000) |
| bulb of penis | The expanded posterior part of the corpus spongiosum of the penis lying in the interval between the crura of the penis. Synonym: bulbus penis, bulb of corpus spongiosum, bulb of urethra, bulbus urethrae. (05 Mar 2000) |
| bulbus penis | The expanded posterior part of the corpus spongiosum of the penis lying in the interval between the crura of the penis. Synonym: bulbus penis, bulb of corpus spongiosum, bulb of urethra, bulbus urethrae. (05 Mar 2000) |
| buried penis | Normal penis obscured by suprapubic fat. (05 Mar 2000) |
| radix penis | The proximal attached part of the penis, including the two crura and the bulb. Synonym: radix penis. (05 Mar 2000) |
| vein of bulb of penis | A tributary of the internal pudendal vein that drains the bulb of the penis. Synonym: vena bulbi penis. (05 Mar 2000) |