The prostatic urethra, the widest and most dilatable part of the
urethra
The urethra (: urethras or urethrae) is the tube that connects the urinary bladder to the urinary meatus, through which Placentalia, placental mammals Urination, urinate and Ejaculation, ejaculate.
The external urethral sphincter is a striated ...
canal, is about 3 cm long.
It runs almost vertically through the prostate from its base to its apex, lying nearer its anterior than its posterior surface; the form of the canal is spindle-shaped, being wider in the middle than at either extremity, and narrowest below, where it joins the
membranous portion.
A transverse section of the canal as it lies in the
prostate
The prostate is an male accessory gland, accessory gland of the male reproductive system and a muscle-driven mechanical switch between urination and ejaculation. It is found in all male mammals. It differs between species anatomically, chemica ...
is horse-shoe-shaped, with the convexity directed forward.
The keyhole sign, in ultrasound, is associated with a dilated bladder and prostatic urethra.
Additional images
File:Illu prostate lobes.jpg, Lobes of prostate
File:Illu prostate zones.jpg, Zones of prostate
File:Illu penis.jpg, Structure of the penis
A penis (; : penises or penes) is a sex organ through which male and hermaphrodite animals expel semen during copulation (zoology), copulation, and through which male placental mammals and marsupials also Urination, urinate.
The term ''pen ...
File:Gray1156.png, Vertical section of bladder, penis, and urethra.
File:Prostate - Gray1153.png, Vesiculæ seminales and ampullæ of ductus deferentes, seen from the front.
References
External links
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* - "The Male Pelvis: The Prostate Gland"
Chronic Prostatitis- Four Major Symptoms and Three Lifestyle To Follow
Prostate
Male urethra
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