The prostate anatomy and function
The prostate anatomy and function, The prostate, also called a prostate gland, is an approximately four centimeter large walnut-shaped gland. It sits just below the urinary bladder and encircles the urethral ring, which directs the urine from the bladder through the prostate and the penis to the glans. At the back, it borders the rectum.
In a twenty-year-old man, the prostate weighs about 20 grams. Their weight increases in the course of life and can grow to over 100 grams. Together with the testes, the prostate belongs to the reproductive organs of man.
The main function of the prostate is to produce a portion of the seminal fluid that carries sperm cells. This fluid is important for sperm motility and thus for fertilization. Another part of the seminal fluid is produced in the two seminal vesicles, which rest on the outside of the prostate. In the case of ejaculation, the muscles of the prostate contract and press the fluid through the numerous glands of the gland into the urethra. At the same time, the secretions produced by the seminal vesicles and the sperm from the testes are also introduced into the urethra. In the region of the prostate, therefore, urinary and seminal pathways converge.
Growth and function of the prostate are controlled by the male sex hormone testosterone, which is mainly formed in the testes (to a small extent but also in the adrenal glands). Without the stimulation by the hormone, the gland remains undeveloped and does not form secretion.
The fact that the prostate is subject to the influence of testosterone can be used to treat prostate cancer .
In the prosthesis, a substance called PSA, short for prostate-specific antigen, is formed next to the seminal fluid. It is detectable not only in the seminal fluid, but also in the blood. PSA plays a key role in the early detection of prostate cancer, since in prostate cancer the PSA blood level may be increased.
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