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The prostatic urethra, the widest and most dilatable part of the urethra 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.
The prostate is a gland of the male reproductive system. In adults, it is about the size of a walnut, [3] and has an average weight of about 11 grams, usually ranging between 7 and 16 grams. [4] The prostate is located in the pelvis. It sits below the urinary bladder and surrounds the urethra.
Prostatic sinus. Vesiculae seminales and ampullæ of ductus deferentes, seen from the front. Dissection of the prostate showing the prostatic urethra. The prostatic ducts are seen opening into the prostatic sinus (unlabeled), which lies on either side of the urethral crest and seminal colliculus. On either side of the urethral crest is a ...
The prostatic utricle (Latin for "small pouch of the prostate ") is a small indentation in the prostatic urethra, at the apex of the urethral crest, on the seminal colliculus ( verumontanum ), laterally flanked by openings of the ejaculatory ducts. It is also known as the vagina masculina, [a] uterus masculinus or (in older literature) vesicula ...
The membranous urethra or intermediate part of male urethra is the shortest, least dilatable, and, with the exception of the urinary meatus, the narrowest part of the urethra. [citation needed] It extends from the apex of the prostate proximally to the bulb of urethra distally. It measures some 12 mm in length.
The prostatic urethra is a common site of obstruction to outflow of urine in BPH patients Transitional: membranous urethra: A small (1 or 2 cm) portion passing through the external urethral sphincter. This is the narrowest part of the urethra. It is located in the deep perineal pouch.
Benign prostatic hyperplasia ( BPH ), also called prostate enlargement, is a noncancerous increase in size of the prostate gland. [1] Symptoms may include frequent urination, trouble starting to urinate, weak stream, inability to urinate, or loss of bladder control. [1] Complications can include urinary tract infections, bladder stones, and ...
The pelvic cavity is a body cavity that is bounded by the bones of the pelvis. Its oblique roof is the pelvic inlet (the superior opening of the pelvis). Its lower boundary is the pelvic floor . The pelvic cavity primarily contains the reproductive organs, urinary bladder, distal ureters, proximal urethra, terminal sigmoid colon, rectum, and ...