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Bassett Collection of Stereoscopic Images of Human Anatomy

Dissection of male pelvis from a lateral approach

Prostate and sphincter of bladder, viewed from above

Image #171-3

KEYWORDS: Muscles and tendons, Urinary tract.

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Higher resolution images are available for a fee. Contact Drew Bourn, PhD, MLIS.

Dissection of male pelvis from a lateral approach
Prostate and sphincter of bladder, viewed from above
All of the bladder has been taken away with the exception of the right half of the sphincter (9), which has been preserved to illustrate the intimate relation of the bladder musculature to the base of the prostate. The prostatic part of the urethra has been opened by means of an anterior midline incision.
1 . Superior fascia of pelvic diaphragm
2 . Ductus deferens
3 . Inferior vesical artery
4 . Seminal vesicle
5 . Ampulla of ductus deferens
6 . Obturator fascia
7 . Tendinous arch of pelvic fascia
8 . Levator ani muscle (visible through opening in fascia)
9 . Vesical sphincter muscle (preserved on right side of specimen)
10 . Puboprostatic ligament
11 . Coccygeus muscle (in background)
12 . Ductus deferens (cut off)
13 . Aberrant vesicle from ductus deferens (blind terminal part cut off approximately 2 mm. from its tip)
14 . Seminal vesicle
15 . Base of prostate (pointer on middle lobe)
16 . Left lobe of prostate
17 . Internal urethral opening (opened, pointer on mucosa)
18 . Upper pointer: Seminal colliculus (lying in opened prostatic part of urethra) Lower pointer: Prostatic sinus
19 . Urethral crest
20 . Membranous part of urethra

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