Home >> Surgery >> ForumTopic: Urethra injury
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| superbdoc Total Posts: 273 | Posted: Tue Oct 14, 2008 07:22 am Question from AIIMS mock 942 Qn 22 The most common site of injury to the urethra is ? A) Bulbar B) Membranous C) Penile D) Prostatic Correct Answer: A Please explain...I thought that Bulbar and Penile urethra were synonyms.. 
Also give me more useful data to take in my brain  |
| indent Total Posts: 54 | Posted: Tue Oct 14, 2008 07:38 am As far as i remember - Parts of urethra A. Prostatic B. Membranous C. Bulbar (At the beginning of the corpus spongiosum) D. Penile of which external urethral meatus is the narrowest part and Prostatic is the most dilatable part. |
| superbdoc Total Posts: 273 | Posted: Tue Oct 14, 2008 03:23 pm Which is the longest part..?? |
| mady007 Total Posts: 8 | Posted: Tue Oct 14, 2008 03:53 pm penile is the longest |
| mady007 Total Posts: 8 | Posted: Tue Oct 14, 2008 04:19 pm The membranous part of the urethra is the shortest (c.1.5 cm), least dilatable and, with the exception of the external orifice, the narrowest, section of the urethra. After an injury to the bulbar urethra, urine usually extravasates between the perineal membrane and the membranous layer of the superficial fascia (clinically known as Colles' fascia). As both of these are attached firmly to the ischiopubic rami, extravasated fluid cannot pass posteriorly because the two layers are continuous around the superficial transverse perineal muscles. Laterally, the spread of urine is blocked by the pubic and ischial rami. Urine cannot enter the lesser pelvis through the perineal membrane if this remains intact, so it makes its way anteriorly into the loose connective tissue of the scrotum and penis and thence to the anterior abdominal wall. If the posterior urethra is injured, urine is extravasated into the pelvic extraperitoneal tissue: if the perineal membrane is torn as well extravasation may also occur into the perineum |
| juhidr Total Posts: 149 | Posted: Wed Oct 15, 2008 02:10 am Yes, Penile is the longest Prostatic - 3 cm Membranous - 1.5 cm Bulbar + Penile = 15 cm (most of which is penile) |