The prostate is a gland that produces the fluid that carries sperm during ejaculation. The prostate gland surrounds the urethra, the tube through which urine passes out of the body. An enlarged prostate means the gland has grown bigger. An enlarged prostate is often called benign prostatic hyperplasia BPH. It is not cancer, and it does not raise your risk for prostate cancer.
Scroll to Accept. Visit be. Gettman MT, et al. Untreated, urinary problems might lead to obstruction of the urinary tract. The treatment you choose will be based on how bad your symptoms are and how Glan prostate they bother you. Prostate cancer that's detected Glan prostate — when it's still confined to the prostate gland — has a better chance Glann successful treatment.
Feet cumshots. Prostate gland
BJU International. Original story on Live Science. Sign up now. Ashfaq A, et al. Send securely. Conrad CA, et al. Choline C injection prescribing information. We buy, test, review and rank pet products to help you avoid the bad stuff and purchase only what's best for prosatte and your dog. The prostate gland is located just below the bladder Glan prostate men and surrounds the top portion of the tube that drains urine from the bladder Glan prostate. To function properly, the prostate needs androgens male hormonessuch as testosterone and dihydrotestosterone DHT. During ejaculation, millions of sperm move from Glan prostate testes through tubes called the Superhot blonde deferens into the area of the prostate. Oncological outcomes following radical prostatectomy for patients with pT4 prostate cancer. Anim Reprod Sci. International Journal of Surgery.
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- A n enlarged prostate is a common condition that affects men in their senior years.
- At normal size, the prostate gland is about the size and shape of a walnut or golf ball.
Anatomically, the prostate can be subdivided in two ways: by zone or by lobe. It does not have a capsule ; rather an integral fibromuscular band surrounds it. The prostate also contains some smooth muscles that also help expel semen during ejaculation. The function of the prostate is to secrete a fluid which contributes to the volume of the semen. In comparison with the few spermatozoa expelled together with mainly seminal vesicular fluid, those in prostatic fluid have better motility , longer survival, and better protection of genetic material.
Disorders of the prostate include enlargement, inflammation , infection, and cancer. The prostate is a gland found in males. In adults, it is about the size of a walnut. Within it sits the urethra coming from the bladder is called the prostatic urethra and merges with the two ejaculatory ducts. A study stated that prostate volume among patients with negative biopsy is related significantly with weight and height body mass index , so it is necessary to control for weight.
One can sub-divide the prostate in two ways: by zone or by lobe. The prostate is incompletely divided into five lobes:. The prostate has been described as consisting of three or four zones. The tissue of the prostate consists of glands and stroma. The stroma of the prostate is made up of fibrous tissue and smooth muscle. Over time, thickened secretions called corpora amylacea accumulate in the gland.
Three histological types of cells are present in the prostate gland: glandular cells, myoepithelial cells, and subepithelial interstitial cells. The prostatic part of the urethra develops from the middle, pelvic, part of the urogenital sinus , of endodermal origin. Condensation of mesenchyme , urethra , and Wolffian ducts gives rise to the adult prostate gland, a composite organ made up of several tightly fused glandular and non-glandular components.
To function properly, the prostate needs male hormones androgens , which are responsible for male sex characteristics. The main male hormone is testosterone , which is produced mainly by the testicles. It is dihydrotestosterone DHT , a metabolite of testosterone, that predominantly regulates the prostate. The prostate gland enlarges over time, until the fourth decade of life. During male seminal emission, sperm is transmitted from the vas deferens into the male urethra via the ejaculatory ducts, which lie within the prostate gland.
Stimulation sends nerve signals via the internal pudendal nerves to the upper lumbar spine; the nerve signals causing contraction act via the hypogastric nerves. It is possible for some men to achieve orgasm solely through stimulation of the prostate gland, such as prostate massage or anal intercourse. Prostatitis is inflammation of the prostate gland.
It can be caused by infection with bacteria, or other noninfective causes. Inflammation of the prostate can cause painful urination or ejaculation, groin pain, difficulty passing urine, or constitutional symptoms. A culprit bacteria may grow in a urine culture. Acute prostatitis and chronic bacterial prostatitis are treated with antibiotics.
Benign prostatic hyperplasia refers to a non-malignant enlargement hyperplasia of the prostate that is very common in older men. Symptoms include needing to urinate often frequency , or taking a while to get started hesitancy. If the prostate grows too large, it may constrict the urethra and impede the flow of urine, making urination difficult and painful and, in extreme cases, completely impossible, causing urinary retention. BPH can be treated with medication, a minimally invasive procedure or, in extreme cases, surgery that removes the prostate.
Uncommonly, such cancers may cause weight loss, urinary retention, or other symptoms due to lesions outside of the prostate, such as back pain.
A digital rectal examination and the measurement of a prostate specific antigen PSA level are usually the first investigations done to check for prostate cancer. PSA values are difficult to interpret, because a high value might be present in a person without cancer, and a low value can be present in someone with cancer.
Prostate cancer that is only present in the prostate is often treated with either surgical removal of the prostate or with radiotherapy or by the insertion of small radioactive particles brachytherapy  Cancer that has spread to other parts of the body is usually treated with hormone therapy, to deprive a tumour of sex hormones androgens that stimulate proliferation.
This is often done through the use of GnRH analogues or agents that block the receptors that androgens act at, such as bicalutamide ; occasionally, surgical removal of the testes may be done instead.
Radiotherapy may also be used to help with pain associated with bony lesions. Sometimes, the decision may be made not to treat prostate cancer. If a cancer is small and localised, the decision may be made to monitor for cancer activity at intervals "Active surveillance" and commence treatment. John E. McNeal first proposed the idea of "zones" in McNeal found that the relatively homogeneous cut surface of an adult prostate in no way resembled "lobes" and thus led to the description of "zones".
The prostate is found as a male accessory gland in all placental mammals excepting edentates , martens , badgers and otters. The gland is particularly well developed in dogs, foxes and boars, though in other mammals, such as bulls, it can be small and inconspicuous. They excrete this fluid along with their urine to mark their territory.
This mixes with and coagulates semen during copulation to form a mating plug that temporarily prevents further copulation. Prostatic secretions vary among species. They are generally composed of simple sugars and are often slightly alkaline. The prostate gland originates with tissues in the urethral wall. This means the urethra , a compressible tube used for urination, runs through the middle of the prostate. This leads to an evolutionary design fault for some mammals, including human males.
The prostate is prone to infection and enlargement later in life, constricting the urethra so urinating becomes slow and painful. Skene's gland is found in both female humans and rodents. Historically it was thought to be a vestigial organ, but recently it has been discovered that it produces the same protein markers, PSA and PAB , as the male prostate. Monotremes and marsupial moles lack prostates, instead having simpler cloacal glands that carry their function.
A prostate gland also occurs in some invertebrate species, such as gastropods. From Wikipedia, the free encyclopedia. This is the latest accepted revision , reviewed on 22 October This article is about the male prostate gland. For the equivalent female prostate gland, see Skene's gland. For the "prostrate" body position, see Prostration. For the journal, see The Prostate. Main article: Prostate massage. Main article: Prostatitis. A digital rectal examinations may be performed to investigate how large a prostate is, or if a prostate is tender which may indicate inflammation.
A diagram of prostate cancer pressing on the urethra, which can cause symptoms. Micrograph showing an inflamed prostate gland, the histologic correlate of prostatitis. A normal non-inflamed prostatic gland is seen on the left of the image.
Micrograph showing normal prostatic glands and glands of prostate cancer prostatic adenocarcinoma — right upper aspect of image.
HPS stain. Prostate biopsy. Main article: Benign prostatic hyperplasia. Main article: Prostate cancer. The Vertebrate Body. The Histochemical Journal. Online Etymology Dictionary. Retrieved Annals of the Royal College of Surgeons of England.
Henry Am J Physiol. Wheater's functional histology: a text and colour atlas 6th ed. Philadephia: Elsevier. Prostate Cancer and Prostatic Diseases. Clinical Anatomy. Urology Match. The Journal of Urology. Archived from the original on Langman's medical embryology 14th ed. Philadelphia: Wolters Kluwer. Ganong's review of medical physiology.
Barman, Susan M. New York. Human Sexuality: From Cells to Society. Cengage Learning. Retrieved September 17,
New York, NY: Springer; Any data you provide will be primarily stored and processed in the United States, pursuant to the laws of the United States, which may provide lesser privacy protections than European Economic Area countries. Part of the capsule. June 2, What is benign prostatic hyperplasia? Prostate Zones The prostate is divided into several anatomic regions, or zones. Give today.
Glan prostate. Comparing normal and enlarged prostate glands
The site where the vas deferens meets the seminal vesicles is known as the ejaculatory duct. The prostate contracts during ejaculation, closing off the opening between the bladder and urethra and pushing semen through at speed.
This is why it is impossible to urinate and ejaculate at the same time. The milky fluid produced by the prostate — prostatic fluid — makes up around 30 percent of the total fluid ejaculated the rest is sperm and fluid from the seminal vesicles.
It contains a number of ingredients, including enzymes, zinc, and citric acid. Although prostatic fluid is slightly acidic, the other components of semen make it alkaline overall; this is to counteract the acidity of the vagina and protect the sperm from damage. To function properly, the prostate needs androgens male hormones , such as testosterone and dihydrotestosterone DHT.
The prostate is surrounded by connective tissue containing many muscle fibers; this capsule makes the prostate feel elastic to the touch. Scientists often split the prostate into four zones that encircle the urethra like layers of an onion. Anterior fibromuscular zone stroma — made of muscular and fibrous tissue.
Part of the capsule. Central zone — surrounds the ejaculatory ducts and makes up around one-quarter of the prostate's total mass. Transition zone — this is the smallest part of the prostate and surrounds the urethra; it is the only portion of the prostate that continues to grow throughout life.
Around 1 in 39 men die of prostate cancer. It makes it difficult to urinate and, in rare, serious cases, can prevent urination entirely. Prostatitis — an inflammation of the prostate; this is sometimes caused by an infection. Digital rectal examination — the doctor inserts a finger into the rectum and feels the prostate. This can detect lumps, nodules, and cancer. Prostate-specific antigen PSA — blood tests can assess the levels of this protein.
High levels indicate an increased risk of prostate cancer. Prostate biopsy — a needle inserted into the prostate via the rectum can take a sample of tissue to be tested in the lab. Prostate ultrasound — also called a transrectal ultrasound , a probe is inserted into the rectum, positioning it close to the prostate. Sometimes a biopsy is taken at the same time. The prostate, a small muscular gland, produces an important fluid that transports sperm and keeps them safe.
Although not vital for life, the prostate is vital for reproduction. Article last updated by Tim Newman on Thu 11 January All references are available in the References tab. Bhavsar, A. Anatomic imaging of the prostate. BioMed Research International, How does the prostate work? Key statistics for prostate cancer. Know your prostate. Prostate cancer. MLA Newman, Tim. MediLexicon, Intl. APA Newman, T. MNT is the registered trade mark of Healthline Media.
Any medical information published on this website is not intended as a substitute for informed medical advice and you should not take any action before consulting with a healthcare professional.
It is important for reproduction, because it supplies the seminal fluid, which mixes with sperm from the testes. Seminal fluid helps the sperm to travel and survive. Download or order a print copy of the Prostate Cancer Patient Guide. The prostate sits deep inside the groin.
The seminal vesicles are rabbit-eared structures that sit on top of the prostate and store and secrete a large portion of the ejaculate. The neurovascular bundle is a collection of nerves and vessels that run along each side of the prostate, and helps to control erectile function.
In some men, these nerves run a short distance away from the prostate, but in others, they attach to the prostate itself. The bladder is like a balloon that gets larger as it fills with urine. The urethra, a narrow tube that connects to the bladder, runs through the middle of the prostate and along the length of the penis, carrying both urine and semen out of the body. It is the hose that drains the bladder. The rectum, which sits right behind the prostate, is the lower end of your intestines and connects to the anus.
Prostate Zones The prostate is divided into several anatomic regions, or zones.
Prostate - Wikipedia
The prostate not prostrate is a small, squishy gland about the size of a ping-pong ball, located deep inside the groin, between the base of the penis and the rectum.
It is important for reproduction, because it supplies the seminal fluid, which mixes with sperm from the testes. Seminal fluid helps the sperm to travel and survive. Download or order a print copy of the Prostate Cancer Patient Guide.
The prostate sits deep inside the groin. The seminal vesicles are rabbit-eared structures that sit on top of the prostate and store and secrete a large portion of the ejaculate. The neurovascular bundle is a collection of nerves and vessels that run along each side of the prostate, and helps to control erectile function.
In some men, these nerves run a short distance away from the prostate, but in others, they attach to the prostate itself.
The bladder is like a balloon that gets larger as it fills with urine. The urethra, a narrow tube that connects to the bladder, runs through the middle of the prostate and along the length of the penis, carrying both urine and semen out of the body.
It is the hose that drains the bladder. The rectum, which sits right behind the prostate, is the lower end of your intestines and connects to the anus. Prostate Zones The prostate is divided into several anatomic regions, or zones. Difficulty with urination is usually not a symptom of prostate cancer.
Keep on top of the latest news about prostate health. Sign up for news alerts. What Does the Prostate Do? The prostate is not essential for life, but it is important for reproduction.
Healthy semen is the perfect consistency and environment for sperm transit, survival, and for fertilization. Semen includes enzymes like PSA which is often measured as part of screening for prostate cancer , as well as other substances made by the seminal vesicles and prostate, such as zinc, citrate, and fructose, that actually give sperm energy to make the journey to the egg.
Semen also contains substances like antibodies that may protect the urinary tract and sperm from bacteria and other pathogens. The prostate typically grows during adolescence, under the control of the male hormone testosterone and its byproduct dihydrotestosterone DHT. Testosterone is primarily made in the testes, but a smaller amount it is also made in the adrenal glands above your kidneys. Bacteria, Infection, Inflammation… Cancer?
Guess what? This may be bad news for people like TV survival expert Bear Grylls, who often resorts Prostate Gland.