Ch 20 Urinary System (ECPI University)
4 steps in the urinary pathway - ANS - 1: Filtration
2: Reabsorption
3: Secretion
4: Excretion
\Anatomical features of the kidney - ANS - Reddish-brown bean-shaped organ
Size of small fist
Enclosed in a tough, fibrous capsule
Left kidney is slightly higher than the right kidney
Surrounded by connective tissue (renal fascia) and masses of adipose tissue (renal fat)
\ascending limb - ANS - portion of nephron loop of renal tubule leading to distal
convoluted tubule
Reabsorption of sodium, chloride, and potassium ions (active transport)
\automatic bladder - ANS - Whenever bladder is filled with any amount of urine, there is
an automatic voiding of the bladder
most likely to result from injury to the spinal cord above the sacral region
\Blood pathway in kidney - ANS - Renal artery
Segmental artery
Interlobar artery
Arcuate artery
Cortical radiate artery
Afferent arteriole
Glomerulus
Efferent arteriole
Peritubular capillaries
—From the nephron, venous blood returns to the renal vein through:
Cortical radiate veins
Arcuate veins
Interlobar veins
Segmental veins
Renal veins
\Bowman's capsule - ANS - cuplike structure that encases the glomerulus
collects filtrate from the blood
\calyc- - ANS - small cup
\collecting ducts - ANS - several nephrons share a collecting duct which serve to carry
urine to the renal pelvis
Reabsorption of water (osmosis)
4 steps in the urinary pathway - ANS - 1: Filtration
2: Reabsorption
3: Secretion
4: Excretion
\Anatomical features of the kidney - ANS - Reddish-brown bean-shaped organ
Size of small fist
Enclosed in a tough, fibrous capsule
Left kidney is slightly higher than the right kidney
Surrounded by connective tissue (renal fascia) and masses of adipose tissue (renal fat)
\ascending limb - ANS - portion of nephron loop of renal tubule leading to distal
convoluted tubule
Reabsorption of sodium, chloride, and potassium ions (active transport)
\automatic bladder - ANS - Whenever bladder is filled with any amount of urine, there is
an automatic voiding of the bladder
most likely to result from injury to the spinal cord above the sacral region
\Blood pathway in kidney - ANS - Renal artery
Segmental artery
Interlobar artery
Arcuate artery
Cortical radiate artery
Afferent arteriole
Glomerulus
Efferent arteriole
Peritubular capillaries
—From the nephron, venous blood returns to the renal vein through:
Cortical radiate veins
Arcuate veins
Interlobar veins
Segmental veins
Renal veins
\Bowman's capsule - ANS - cuplike structure that encases the glomerulus
collects filtrate from the blood
\calyc- - ANS - small cup
\collecting ducts - ANS - several nephrons share a collecting duct which serve to carry
urine to the renal pelvis
Reabsorption of water (osmosis)
