Urinary system Flashcards
nephr/o, ren/o
kidneys
filters the blood to remove waste products, maintain electrolyte concentrations, and remove excess water to maintain the fluid volume within the body
pyel/o
renal/pelvis
collects urine produced by the kidneys
ur/o, urin/o
urine
liquid waste products to be excreted
ureter/o
ureters
transports urine from the kidneys to the bladder
cyst/o
urinary bladder
stores urine until it is excreted
urethr/o
urethra
transports urine from the bladder through the urethral meatus, where it is excreted
prostat/o
prostate
a gland of the male reproductive system that surrounds the male urethra. Disorders of this gland can disrupt the flow of urine
-cele
hernia, tumor, swelling
cyst/o
urinary bladder, cyst, or sac of fluid
dia-
through, between, apart, or complete
-ectasis
stretching, dilation, enlargement
glomerul/o
glomerulus
lith/o
stone, calculus
-lysis
breakdown, separation, setting free, destruction, loosening
nephr/o
kidney
-pexy
surgical fixation
pyel/o
renal pelvis, bowel of kidney
-tripsy
to crush
ur/o
urine, urinary tract
ureter/o
ureter
urethr/o
urethra
-uria
urination, urine
ablation
the removal of a body part of the destruction of its function
anuria
the absence of urine formation by the kidneys
benign prostatic hyperplasia
an abnormal enlargement of the prostate
chronic kidney disease
the progressive loss of renal function over months or years
cystitis
inflammation of the bladder
cystocele
a hernia of the bladder through the vaginal wall; also called a prolapsed bladder
cystolith
a stone located in the urinary bladder
cystopexy
the surgical fixation of the bladder to the abdominal wall
cystoscopy
the visual examination of the urinary bladder using a cystoscope
dialysis
a procedure to remove waste products from the blood of patients whose kidneys no longer function
diuresis
the increased output of urine
edema
excessive fluid accumulation in body tissues
end-stage renal disease
the final stage of chronic kidney disease that is fatal unless the functions of the failed kidneys are successfully replaced by dialysis or with a successful kidney transplant
enuresis
the involuntary discharge of urine
epispadias
the congenital abnormality affecting the opening of the urethral opening. In the male, the opening is located on the upper surface of the penis. In the female, the urethral opening is located in the region of the clitoris
extracorporeal shockway lithotripsy
the use of high-energy ultrasonic waves traveling through water or gel to break up kidney stones into fragments, which are then excreted in the urine
glomerulonephritis
a form of nephritis caused by inflammation of the glomeruli that causes red blood cells and proteins to leak into the urine
hemodialysis
a procedure that filers waste products directly from the patient’s blood to replace the function of damaged kidneys
hydronephorosis
the dilation of one or both kidneys that is the result of an obstruction of the flow or urine
hydroureter
distention of the ureter with urine that cannot flow because the ureter is blocked
hyperproteinuria
the presence of abnormally high concentrations of protein in the urine
hypoproteinemia
the presence of abnormally low concentrations of protein in the blood
hypospadias
a congenital abnormality in the placement of the urethral opening. In the male, the urethral opening is on the under surface of the penis. In the female, the urethral opening is into the vagina
incontinence
the inability to control the excretion of urine and/or feces
interstitial cystitis
a chronic inflammation within the walls of the bladder
intravenous pyelography
a radiographic study of the kidneys and ureters using a contrast medium to diagnose changes in the urinary tract
nephrolith
a stone located in the kidney; also known as renal calculus or a kidney stone
nephrolithiasis
the presence of a stone or stones in the kidney
nephrolysis
a freeing of a kidney from adhesions
nephrons
the microscopic functional units of each kidney where urine is produced through the processes of filtration, reabsorption, and secretion
nephropathy
any kidney disease including degenerative and inflammatory conditions
nephroptosis
the prolapse, or dropping down, of a kidney into the pelvic area where the patient stands; also known as floating kidney
nephropyosis
suppuration of the kidney
nephrostomy
the placement of a catheter to maintain an opening from the pelvis of one or both kidneys to the exterior of the body
nephrotic syndrome
a groups of conditions in which excessive amounts of protein are lost in the urine, resulting in abnormally low levels of protein in the blood
neurogenic bladder
a urinary problem caused by interference with the normal nerve pathways associated with urination
nocturia
frequent and excessive urination during the night
nocturnal enuresis
urinary incontinence during sleep
oliguria
scanty urination
percutaneous nephrolithotomy
the surgical removal of a nephrolith through a small incision in the back
peritoneal dialysis
dialysis in which the lining of the peritoneal cavity acts as the filter to remove waste from the blood
polycystic kidney disease
an inherited kidney disorder characterized by the growth of numerous fluid-filled cysts in the kidneys leading eventually to kidney failure
polyuria
excessive urination
prostatism
a disorder resulting from the compression or obstruction of the urethra due to benign prostatichyperplasia
pyelotomy
a surgical incision into the renal pelvis
suprapubic catherization
the placement of a catheter into the bladder through a small incision made in the abdominal wall just above the pubic bone
uremia
a toxic condition resulting from renal failure in which urea and other waste products are retained in the blood; also known as uremic poisioning
ureterectasis
the distention of a ureter
ureterolith
a stone located anywhere along the ureter
ureterorrhagia
the discharge of blood from a ureter
ureterorrhaphy
the surgical suturing of a ureter
urethritis
inflammation of the urethra
urethroplasty
the surgical repair of damage or a defect in the walls of the urethra
urethrorrhagia
bleeding the urethra
urethrostenosis
narrowing of the urethra
urethrotomy
a surgical incision into the urethra for relief of a stricture
urinary catheterization
the insertion of a tube into the bladder in order to procure a sterile specimen for diagnostic purposes, to drain urine from the bladder when the patient is unable to urinate, or to place medication into the bladder
vesicovaginal fistula
an abnormal opening between the bladder and the vagina
voiding cystourethrography
a diagnostic procedure in which fluoroscope is used to examine the flow of urine from the bladder and through the urethra
wilms tumor
a rare type of malignant tumor of the kidney that occurs in young children
Homeostasis
is the process through which the body maintains a constant internal environment.
The Urinary system performs many functions that are important in maintaining homeostasis
Functions of homeostasis:
-Maintaining the proper balance of water, salts, and acids in the body by filtering the blood as it flows through the kidneys
-Constantly filtering the blood to remove urea, creatinine, uric acid, and other waste materials from the bloodstream.
-Converting these waste products and excess fluids into urine in the kidneys are excreting them from the body via the urinary bladder
urea
is the major waste product of protein metabolism
creatinine
is a waste product of muscle metabolism
urinary tract (system) consists of:
two kidneys, two ureters, one bladder and one urethra. The adrenal glands, which are part of the endocrine system, are located on the top of the kidneys
genitourinary tract
located in close proximity to the reproductive organs, so these two body systems are sometime referred together as this
kidney
constantly filter the blood to remove waste products and excess water. These are excreted as urine, which is 95% water and 5% urea and other body wastes
how many quarts are processed every day for the average person and how much urine does it produce
200 quarts of blood and an average of 2 quarts of urine. The kidneys also help the body maintain the proper level of fluid, hormones that control blood pressure and make red blood cells, and activate vitamin D to maintain healthy bones
renal
means pertaining to the kidneys
ren
means kidneys
retroperitoneal
means behind the peritoneum, which is the membrane that lines the abdominal cavity the kidneys are located here - one on each side of the vertebral column below the diaphragm and the lower edge of the rib cage
renal cortex
is the outer edge of the kidney. This layer of tissue contains more than one million microscopic units called nephrons.
cortex
means the outer portion of an organ
nephrons
are the microscopic functional units of each kidney. It is here that the urine is produced through the process of filtration, reabsorption, and secretion
reabsorption
is the return to the blood of some of the substances that were removed during filtration
glomerulus
which is a cluster of capillaries, surrounded by a cup-shaped membrane called the Bowman’s capsule, and a renal tubule
renal artery
blood enters the kidney through the renal artery and flows into the nephrons
renal vein
after passing through the filtration system of the glomerulus, the filtered blood containing protein and blood cells leaves the kidney and returns to the bloodstream through the renal vein
-the remaining filtrate flows into the renal tubules, where elements, including some water, sugar and salts, are returned to the bloodstream via a nearby capillary
-remaining waste products are continuously converted into urine, which is transported to the renal pelvis and collected in preparation for entry into the ureters. If waste products are not efficiently removed from the bloodstream, the body cannot maintain homeostasis, with a stable balance of salts and other substances
renal pelvis
is the funnel-shaped area inside each kidney that is surrounded by the renal cortex and medulla. This is where the newly formed urine from the nephrons collects before it flows into the ureters
ureters
are two narrow tubes, each about 10 to 12 inches long, which transport urine from the kidney to the bladder.
Peristalsis
which is a series of wave-like contractions, move urine down each ureter to the bladder. Peristalsis is also part of the digestive process
uretral orifices
urine drains from the ureters into the bladder through the ureteral orifices in the wall of the urinary bladder
orifice
means opening
urinary bladder
is an oval hollow, muscular organ that is a reservoir for urine before it is excreted from the body
-The bladder is located in the anterior portion of the pelvic cavity behind the pubic symphysis. The average adult bladder stores more than one pint of urine
-The the stomach, the bladder is lined with rugae. These folds allow it to expand when full and contract when empty
urethra
is the tube extending from the bladder to the exterior of the body.
urinary sphincters
there are two, one located at either end of the urethra. These muscular rings control the flow of urine from the bladder into the urethra and out of the urethra through the urethral meatus.
Sphincter
is a ring-like muscle that closes a passageway
urethral meatus
also known as the urinary meatus, is the external opening of the urethra
meatus
means the external opening of a canal
female urethra
is approximately 1.5 inches long, and the urethral meatus is located between the clitoris and the opening of the vagina. In the female, the urethra transports only urine
male urethra
is approximately 8 inches long, and the urethral meatus is located at the tip of the penis. The urethra transports both urine and semen
prostate gland
which is part of the male reproductive system, surrounds the urethra. Most disorders of the prostate affect the male’s ability to urinate.
urination
also known as voiding or micturition, is the normal process of excreting urine
-as the bladder fills up with urine, pressure is placed on the base of the urethra, resulting in the urge to urinate or micturate
-urination requires the coordinated contraction of the bladder muscles and relaxation of the sphincters. This action forces the urine through the urethra and out through the urethral meatus
nephrologist
is a physician who specializes in diagnosing and treating diseases and disorders of the kidneys
nephr
means kidney