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Ulcer
A lesion in which the tissue surface is eroded away.
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Ultrasound/Ultrasonography
A technique used to get the image of a deep structure within the body by directing ultrasound waves at it and recording the reflections (echoes) from it.
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Umbilicus
The area of the body where the umbilical cord is attached; the belly button.
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Ununited anconeal process (UAP)
The anconeal process never unites with the ulna, can detach and form a loose body in the joint, called a joint mouse.
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Urate
A chemical compound which contains uric acid and is made by the body, and can form crystals and stones in the urinary bladder. Uric acid is a waste product from the breakdown of certain proteins.
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Urea
Wasteproduct of protein metabolism that is removed from the body by the kidneys.
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Urease
An enzyme that breaks down urea. Urea is a wasteproduct of protein metabolism that is removed from the body by the kidneys.
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Ureter
A small tubular structure leading from the kidney to the bladder. There are 2 ureters, one from each kidney.
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Urethra
The tubular structure that transports urine from the urinary bladder to the outside and in the male, carries semen to the outside.
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Urinary Incontinence
A phrase used to describe the inability to control urination.
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Urinary Obstruction
A blockage in the urinary system, most often occuring in the urethra, the tube that leads from the urinary bladder to the outside of the body.
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Urinary Retention
A condition in which the urinary bladder does not rid itself of all urine it contains during the process of urination.
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Urticaria
Hives; development of small swellings which may itch; usually caused by an allergic reaction.
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Uterus
The female organ in which the fetus develops. Composed of a body and 2 horns.
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Uveitis
Inflammation of the eye.
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