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Medical Dictionary: u

UEupper extremity
ul/oscar, gums
ulcerA lesion on the surface of a organ or tissue, produced by the sloughing of inflammatory necrotic tissue.
-ulesmall, small one
ulnaThe inner and longer bone of the forearm.
ulnarPertaining to the ulna, the long medial bone of the forearm.
ultrasonographyThe visualization of deep structures of the body by recording the reflections of ultrasonic pulses directed into the tissues.
ultravioletElectromagnetic radiation that has shorter wavelengths than visible light.
-umstructure, tissue
umbilic-umbilicus (navel)
umbilicalPertaining to the opening in the abdominal wall where the blood vessels from the placenta enter.
umbilical cordThe flexible rope-like structure that connects a developing fetus to the placenta. The cord contains blood vessels which carry oxygen and nutrients from the mother to the fetus and waste products away from the fetus.
umbilicusThe depression in the center of the abdominal wall where the umbilical cord entered in the fetus. Also called the navel.
un-not, reversal of an action
unconsciousnessAbnormal loss of awareness of self and environment and lack of responsiveness to sensory stimuli.
uncusA hook-shaped structure.
ungualPertaining to the nails.
unguisA nail.
uran/ohard palate
ureaA compound formed in the liver which is the major nitrogenous end product of protein metabolism
uremiaPresence of excessive amounts of urea in the blood. May be a sign of renal disease or failure.
ureterOne of a pair of tubes that transports urine from the kidney pelvis to the urinary bladder.
ureteralPertaining to the ureter.
ureteroceleA cystic dilatation of the end of a ureter as it enters into the urinary bladder. It may obstruct urine flow.
ureterolithiasisFormation of stones in the ureter.
ureterostomySurgical creation of an external opening in the ureter for external drainage of the urine.
urethraA tube that transports urine from the urinary bladder to the outside of the body in both the sexes. It also has a reproductive function in the male by providing a passage for sperm.
urethralPertaining to the urethra.
urethritisInflammation of the urethra, causing painful and difficult urination.
URIupper respiratory infection
urin/ourine, urinary system
urinalysisLaboratory analysis of urine by chemical, physical, or microscopic means.
urinary bladderA muscular, membranous sac along the urinary tract that store urine until urination.
urinary cathetersCatheters inserted into the urinary bladder or kidney for therapeutic or diagnostic purposes.
urinary fistulaAn abnormal passage in any part of the urinary tract between itself or with other organs.
urinationDischarge of urine from the body.
urineThe fluid containing waste products and water secreted by the kidneys, then stored in the urinary bladder until urination.
urochesiaPassage of urine through the rectum.
urolithA stone in the urinary tract.
urolithiasisFormation of stones in any part of the urinary tract, usually in the kidney, urinary bladder or the ureter.
urologicPertaining to urology.
urologyA surgical specialty concerned with the study, diagnosis, and treatment of diseases of the urinary tract in both sexes, and the genital tract in the male.
urotheliumThe epithelial lining of the urinary tract.
URTupper respiratory tract
urticariaHives, which are welts on the skin that often itch
USPUnited States Pharmacopeia
ut. directed
uterinePertaining to the uterus.
uterine prolapseA condition where the uterus drops down into the vagina.
uterusThe womb. A female reproductive organ located between the bladder and the rectum.
UTIurinary tract infection
UVAultraviolet A light
uvealPertaining to the uvea.
uveitisInflammation of the uvea.
uvulaA fleshy extension at the back of the soft palate that hangs above the opening of the throat.

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