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Related to bladders: gall bladders, Swim bladders


(blad'er), [TA]
A distensible musculomembranous organ serving as a receptacle for fluid, such as the urinary bladder or gallbladder. See: detrusor.
See: detrusor.
[A.S. blaedre]


a. Anatomy Any of various distensible membranous sacs, such as the urinary bladder or the swim bladder, that serve as receptacles for fluid or gas.
b. Medicine A blister, pustule, or cyst filled with fluid or air; a vesicle.
c. An item resembling one of the membranous sacs in animals: the bladder of a buoyancy compensator.


A membranous sac that serves as a reservoir for urine. It is fed via a ureter from each kidney, and empties urine via the urethra. It is lined by a specialised layer of epithelium (the urothelium) and is surrounded by two thick layers of smooth muscle.

Superior and inferior vesical arteries, umbilical artery, vaginal artery.

Vesical venous plexus.
Vesical nervous plexus.
Embryonal origin
Urogenital sinus.


Change of life, climacteric, 'time of life'  Gynecology The cessation of menstrual activity due to failure to form ovarian follicles, which normally occurs age 45–50 Clinical Menstrual irregularity, vasomotor instability, 'hot flashes', irritability or psychosis, ↑ weight, painful breasts, dyspareunia, ↑/↓ libido, atrophy of urogenital epithelium and skin, ASHD, MI, strokes and osteoporosis–which can be lessened by HRT. See Estrogen replacement therapy, Hot flashes, Male menopause, Premature ovarian failure, Premature menopause. Cf Menarche.
Menopause–”…what a drag it is getting old.” Jagger, Richards
Bladder Cystourethritis, frequency/urgency, stress incontinence
Breasts ↓ Size, softer consistency, sagging
Cardiovascular Angina, ASHD, CAD
Endocrine Hot flashes
Mucocutaneous Atrophy, dryness, pruritus, facial hirsutism, dry mouth
Neurologic Psychological, sleep disturbances
Pelvic floor Uterovaginal prolapse
Skeleton  Osteoporosis, fractures, low back pain
Vagina Bloody discharge, dyspareunia, vaginitis
Vocal cords Deepened voice
Vulva  Atrophy, dystrophy, pruritus


(blad'ĕr) [TA]
1. A distensible musculomembranous organ serving as a receptacle for fluid, as the gallbladder or urinary bladder.
See: detrusor
2. Synonym(s): urinary bladder. Synonym(s): vesica (1) .
[A.S. blaedre ]


Bladderclick for a larger image
Fig. 69 Bladder . Summary of bladder control.
Bladderclick for a larger image
Fig. 68 Bladder . The mammalian bladder.


a hollow muscular bag situated in the lower abdominal cavity of mammals serving as a reservoir for urine from the kidneys. The bladder is composed of an internal epithelium surrounded by a coat of smooth muscle running in both circular and longitudinal directions, contraction of which causes complete collapse of the bag-like shape. The flow of urine down the URETERS from kidneys to the bladder is continuous, the amount depending on body fluid levels. When the bladder is empty the opening to the outside is closed by an internal SPHINCTER of smooth muscle which, like the bladder muscle, is controlled by the AUTONOMIC NERVOUS SYSTEM. When full, the internal sphincter relaxes under nervous control and urine enters the URETHRA (the duct to the outside), but is prevented from being voided by contraction of an external sphincter of striated muscle. Regulation of the sphincter (and thus or urine release or ‘micturition’) is under voluntary nervous control.


The muscular sac or container that stores urine until it is released from the body through the tube that carries urine from the bladder to the outside of the body (urethra).

Patient discussion about bladder

Q. What is involved in Gall Bladder surgery?

A. If you refer to removal of the gal bladder due to stones, then it may be performed either in an open approach (using an arch-like incision in your right upper abdomen) or in a laparoscopic approach (using only three small incisions to insert devices into your abdomen). The operation itself is not long and not associated with significant problems after it.

Q. How to prevent getting a bladder infection? I am worried about getting another bladder infection like I just had now. I am during my second trimester. How can I avoid getting it again?

A. drink more cranberry juice,its 100% natural, and wont harm the baby in anyway.

Q. can a bladder infection affect male's ability to have sex?

A. I haven't heard about such an association However, this is only general statement, so if you have any concerns you may want to consult a doctor.

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More discussions about bladder
References in periodicals archive ?
Overactive bladder is a condition that occurs in various diseases such as Parkinson's disease, multiple sclerosis, stroke, and others.
The preclinical data demonstrated powerful and unique antitumor biology that can be elicited via continuous, targeted delivery of gemcitabine into the urinary bladder.
A It's possible that an artificial bladder rather than a bladder transplant is on the cards.
Results: Male students due to comparatively greater mean height and weight had significantly higher maximum capacity of bladder to hold urine independent of BMI.
Many formulas have been proposed over the years to calculate maximum urinary bladder capacity.
However, workers have observed deposition of new elastin fibres in the repaired arteries (27) and reconstructed urinary bladders with different graft materials (20,26).
Washington, Feb 10 ( ANI ): If you have an overactive bladder or incontinence, help could be on the way.
The study confirms the validity and reliability of three-dimensional ultrasound for measuring bladder sensory thresholds and offers a less invasive method for doing so, Dr.
Side effects can include diarrhea, hematuria, dysuria, nocturia, urinary frequency, urinary urgency, fatigue, and urinary bladder and skin irritation.
Conclusion: In this single institute study, the frequency of incidental gall bladder carcinoma was found to be 0.21 % and that too in elderly patients.
Complete duplication of the urinary bladder. Differential diagnosis: incomplete duplication of the urinary bladder, urinary bladder diverticulum and cloacal malformation.