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35 Cards in this Set

  • Front
  • Back
most physiological wastes are removed by
the urinary system
three major functions of the urinary system
1. excretion
2. elimination
3. homeostatic regulation of the volume & solute concentration of blood plasma
the removal of organic waste products from body fluids
excretion
the discharge of waste products into the environment
elimination
performs the excretory functions of the urinary system
kidneys
organs that produce urine
kidneys
fluid containing water, ions, and small soluble compounds
urine
urine leaving the kidneys flows along...
the urinary tract
the urinary tract consists of:
ureters
paired tubes of the urinary tract
ureters
transports urine toward the urinary bladder
ureter
temporarily stores urine prior to elimination
bladder
conducts urine to exterior (and in males, transports semen as well)
urethra
responsible for the elimination of urine
bladder and urethra
process of elimination of urine
urination/micturition
covers the outer surface of the kidney & lines the renal sinus
fibrous capsule
an internal cavity within the kidney
renal sinus
the kidney has an outer ____ & and inner ______
-outer cortex
-inner medulla
superficial portion of the kidney that is in contact with the fibrous capsule
renal cortex
consists of 6-18 renal pyramids
renal medulla
conical or triangular structures that make up the renal medulla
renal pyramids
the tip of each renal pyramid that projects into the renal sinus
renal papilla
band of cortical tissue that separates each renal pyramid and extends into the medulla.
renal columns
consists of a renal pyramid, the overlying area of renal cortex, and adjacent tissues of the renal columns
renal lobe
urine production occurs in the:
renal lobes
ducts within each renal papilla discharge urine into the cup-shaped drain called a:
minor calyx
four or five minor calyces merge into a :
major calyx
two or three major calyces form the:
renal pelvis
large funnel shaped chamber that fills most of the renal sinus and is connected to the ureter, which drains the kidney
renal pelvis
urine production begins in microscopic, tubular structures
nephrons
nephrons are located...
in the cortex of each renal lobe
each kidney receives blood through a:
renal artery
the renal artery enters through the ___ and provides blood to ___
-renal sinus
-segmental arteries
segmental arteries further divide into:
interlobar arteries
radiate outward through renal columns between the renal pyramids
interlobar arteries