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Endogenous stones: These are small stones formed within the acini of the prostate. They have a higher correlation with age. [3] Extrinsic stones: These stones are usually larger and formed due to the reflux of urine into the prostate. [3] The exact mechanism of the development of prostatic calculi is still unclear. [3]
A calculus (pl.: calculi), often called a stone, is a concretion of material, usually mineral salts, that forms in an organ or duct of the body. Formation of calculi is known as lithiasis ( / ˌ l ɪ ˈ θ aɪ ə s ɪ s / ).
The prostate is covered in a surface called the prostatic capsule or prostatic fascia. [4] The internal structure of the prostate has been described using both lobes and zones. [5] [2] Because of the variation in descriptions and definitions of lobes, the zone classification is used more predominantly. [2]
Seminal fluid continues down the ejaculatory duct into the prostate gland, where an alkaline prostatic fluid is added. [4] This addition provides the texture and odor associated with semen. [ 4 ] The alkalinity of the prostatic fluid serves to neutralize the acidity of the female vaginal tract in order to prolong the survival of sperm in this ...
The male accessory glands are the ampullary gland, seminal vesicle, prostate, bulbourethral gland, and urethral gland. [5]The products of these glands serve to nourish and activate the spermatozoa, to clear the urethral tract prior to ejaculation, serve as the vehicle of transport of the spermatozoa in the female tract, and to plug the female tract after placement of spermatozoa to help ensure ...
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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 ]
A number of structural proteins (filaggrin, keratin), enzymes (e.g. proteases), lipids, and antimicrobial peptides contribute to maintain the important barrier function of the skin. Keratinization is part of the physical barrier formation ( cornification ), in which the keratinocytes produce more and more keratin and undergo terminal ...