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The prostate is a exocrine gland of the male reproductive system. In adults, it is about the size of a walnut, [2] and has an average weight of about 11 grams (0.39 oz), usually ranging between 7 and 16 grams (0.25–0.56 oz). [3] The prostate is located in the pelvis. It sits below the urinary bladder and surrounds the urethra.
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.
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 ]
Three accessory glands provide fluids that lubricate the duct system and nourish the sperm cells. Seminal vesicles: two glands behind the bladder that secrete many of the semen's components. Prostate gland: a gland located below the bladder that produces seminal fluid and helps regulate urine flow.
English: Chromogenic immunohistochemistry of benign gland (left) and adenocarcinoma (right) using the PIN-4 cocktail. The adenocarcinoma lacks the basal epithelial cells (stained dark brown by p63, CK-5 and CK-14).
Transrectal ultrasonography, or TRUS in short, is a method of creating an image of organs in the pelvis, most commonly used to perform an ultrasound-guided needle biopsy evaluation of the prostate gland in men with elevated prostate-specific antigen or prostatic nodules on digital rectal exam.
Bladder location and associated structures in the male. In males, the prostate gland lies outside the opening for the urethra. The middle lobe of the prostate causes an elevation in the mucous membrane behind the internal urethral orifice called the uvula of urinary bladder. The uvula can enlarge when the prostate becomes enlarged.
The ejaculatory ducts pass through the prostate gland before opening separately into the verumontanum of the prostatic urethra. [2] The vesicles are between 5–10 cm in size, 3–5 cm in diameter, and have a volume of around 13 mL. [3] The vesicles receive blood supply from the vesiculodeferential artery, and also from the inferior vesical artery.
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