Ch.16 Urinalysis Flashcards
Function of the urinary system
To regulate fluid and electrolyte balance of the body, to remove waste products
Function of the bladder
To store and expel urine
External opening of the urethra
Urinary meatus
A tube that extends from the bladder to the outside of the body
Urethra
Functional unit of the kidney
Nephron
Filters waste substances from the blood and diluted them with water to produce urine
Nephron
Four organic waste products found in urine
Urea, uric acid, ammonia, creatinine
Derived from breakdown of protein
Urea
Some inorganic waste products in urine are
Chloride, sodium, potassium, calcium, magnesium, phosphate, sulfate
A normal adult excreted approximately how many mLs of urine per day
750 - 2000 mL
An excessive increase in urine output
Polyurea
A decreased or scanty urine output
Oliguria
The normal act of voiding urine
Micturition
Failure of the kidneys to produce urine
Anuria
Secretion and passage of large amounts of urine
Diuresis
Difficult or painful urination
Dysuria
The condition of having to urinate often
Frequency
Blood present in the urine
Hematuria
Excessive voluntary urination during the night
Nocturia
Inability to control urination during sleep
Nocturnal enuresis
Pus presente in the urine
Pyuria
Inability to empty the bladder
Retention
Immediate need to urinate
Urgency
Inability to retain urine
Urinary incontinence