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LOM CH. 7
URINARY SYSTEM
25
Medical
Undergraduate 1
09/14/2012

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Term
CALYX
Definition
CUP-LIKE  COLLECTING REGION OF THE RENAL PELVIS.
Term
CATHETER
Definition
TUBE FOR INJECTING OR REMOVING FLUIDS
Term
CORTEX
Definition
OUTER REGION OF AN ORGAN
Term
CREATININE
Definition
NITROGENOUS WASTE EXCRETED IN URINE.
Term
ELECTROLYTE
Definition
CHEMICAL ELEMENT THAT CARRIES AN ELECTRICAL CHARGE WHEN DISSOLVED IN WATER.  THEY ARE NECESSARY FOR FUNCTIONING OF MUSCLES AND NERVES.
Term
FILTRATION
Definition
PROCESS WHEREBY SOME SUBSTANCES, BUT NOT ALL, PASS THROUGH A FILTER. IN THE KIDNEY, BLOOD PRESSURE FORCES MATERIAL THROUGHT THE FILTER (GLOMERULUS).  ABOUT 180 QUARTS OF FLUID ARE FILTERED FROM THE BLOOD DAILY, BUT THE KIDNEY RETURNS 98% TO 99% OF THE WATER AND SALTS.  ONLY ABOUT 1 1/2 QUARTS (1500 ML) OF URINE ARE EXCRETED DAILY.
Term
GLOMERULAR CAPSULE
Definition
ENCLOSING STRUCTURE SURROUNDING EACH GLOMERULUS.  IT IS ALSO KNOWN AS BOWMAN CAPSULE AND IT COLLECTS THE MATERIAL THAT IS FILTERED FROM THE BLOOD THROUGH THE WALLS OF THE GLOMERULUS.
Term
GLOMERULUS
Definition
TINY BALL OF CAPILARIES (MICROSCOPIC BLOOD VESSELS) IN THE KIDNEY.
Term
HILUM
Definition
DEPRESSIN IN AN ORGAN WHERE BLOOD VESSELS AND NERVES ENTER AND LEAVE.
Term
KIDNEY
Definition
ONE OF TWO BEAN-SHAPED ORGANS ON EITHER SIDE OF THE BACKBONE IN THE LUMBAR REGION; IT FILTERS NITROGENOUS WASTES FROM THE BLOODSTREAM TO FORM URINE.
Term
MEDULLA
Definition
INNER REGION OF AN ORGAN. IT'S THE INNER REGION OF THE KIDNEY
Term
NEPHRON
Definition
COMBINATION OF GLOMERULUS AND RENAL TUBULE WHERE FILTRATION, REABSORPTION, AND SECRETION TAKE PLACE IN THE KIDNEY. IT IS THE FUNCTIONAL UNIT OF THE KIDNEY, EACH CAPABLE IF FORMING URINE BY ITSELF.  THERE ARE ABOUT 1 MILLION OF THESE IN A KIDNEY.
Term
RENAL ARTERY
Definition
BLOOD VESSEL THAT CARRIES BLOOD TO THE KIDNEY.
Term
RENAL PELVIS
Definition
CENTRAL COLLECTING REGION IN THE KIDNEY.
Term
RENAL TUBULE
Definition
MICROSCOPIC TUBES IN THE KIDNEY WHERE URINE IS FORMED AFTER FILTRATION.
Term
RENAL VEIN
Definition
BLOOD VESSEL THAT CARRIES BLOOD AWAY FROM THE KIDNEY AND TOWARD THE HEART.
Term
SODIUM (Na+)
Definition
AN ELECTROLYTE REGULATED IN THE BLOOD AND URINE BY THE KIDNEYS; NEEDED FOR PROPER TRANSMISSION OF NERVE IMPULSES, HEART ACTIVITY, AND OTHER METABOLIC FUNCTIONS.
Term
TRIGONE
Definition
TRIANGULAR AREA IN THE URINARY BLADDER.
Term
UREA
Definition
MAJOR NITROGENOUS WASTE EXCRETED IN URINE.
Term
URETER
Definition
ONE OF THE TWO TUBES LEADING FROM THE KIDNEYS TO THE URINARY BLADDER.
Term
URETHRA
Definition
TUBE LEADINF FORM THE URINARY BLADDER TO THE OUTSIDE OF THE BODY.
Term
URINARY BLADDER
Definition
HOLLOW, MUSCULAR SAC THAT HOLDS AND STORES URINE.
Term
DUODENUM
Definition
FIRST PART OF THE SMALL INTESTINE. IT MEASURES ABOUT 12 INCHES LONG.
Term
PYLORIC SPHINCTER
Definition
RING OF MUSCLE AT THE END OF THE STOMACH, NEAR THE DUODENUM.
Term
PHARYNX
Definition
THROAT, THE COMMON PASSAGEWAY FOR FOOD FROM THE MOUTH AND FOR AIR FROM THE NOSE.
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