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59 Cards in this Set

  • Front
  • Back
excretory functions of urinary system are performed by _______
kidney produce?
urine: fluid contained water, ions, and soluble compounds
when urine leaves the kidneys it travels along the?
the ureters lead to the?
urinary bladder
urinary bladder
a muscular sac for the temporary storage of urine
the urine travels from the bladder to?
the function of the urethra?
to conduct urine to the exterior
the renal vein and the renal artery
hillus: prominant medial indentation
hilus is a point of ENTRY for?
renal artery and renal nerves
hilus is a point of EXIT for?
renal vein and ureter
what covers the outer surface of the kidney?
renal capsule
the renal capsule lines the?
renal sinus
renal sinus
internal cavity within the kidney
what passed thrugh the hilus and braches within the renal sinus
renal blood vessels and the ureter
the superficial portion of the kidney
renal cortex
description of the cortex
reddish brown and granular
conical or tirangular structires
renal pyrimids
6-18 renal pyrimids make up?
renal medulla
ducts within the renal papilla discharge urine into cup-shaped drain called?
minor calyx
4 or 5 minor calyx makes up a?
major calyx
2 or 3 major calyx form together to make the?
renal pelvis
renal pelvis
large funnel shaped chamber
Flow of blood to the kidneys
1- renal artery, 2-segmental artery, 3- interlobar artery, 4- arcuate artery, 5- afferent arterioles
flow of blood to the kidneys inside the nephron
6- glomerulus, 7- efferent arteriole, 8- peritubular capillaries
nephron functions
filtration, secretion, and reabsorbtion
a sperical structure consisting of Bowman's capsule
renal corpuscle
Bowman's capsule
a cup shaped chamber approximately 200 nanometers in diameter
capillary network
bllod arrives at the renal corpusle by the?
afferent arteriole
how many convoluted segemtns does hte renal tubule have?
renal tube segments?
1- proximal convoluted tube
2- distal convoluted tube
the renal tube segments are separated by?
loop of Henle
tubular cell walls absorb organic nutrients, ions, water, plasma proteins, from the tubular fluid and release them into the peritubular fluid
peritubular fluid
the intestinal fluid surrounding the renal tubule
the acute bend of the PCT turns into
renal tubule toward the Renal Medulla
PCT bends makes?
loop of Henle, or nephron loop
epitelia cells taller near DCT near renal corpuscle, nuclie are clustered together
macula densa
macula densa plus juxtaglomerlular cells form the?
juxtaglomerular apparatus
endocrine structure that secretes the hormone erythropoietin and the enzyme renin
juxtaglomerular apparatus
the last segment of the nephron
the distal convoltuted tube
opens into the collecting system
consist of collecting ducts and papillary ducts
collecting system
DCT functions
water(varies); secretion: hydrogen ions, ammonium ions, creatine, drugs, toxins
hydrostatic pressure forces water across the membrane, and solute molecules are selected on the basisof size
urea, chloride ions, lipid-soluble materials may diffuse out of the PCT in this way
passive reabsorbiton of ions
PCT actively transoprts ions including:
sodium, potassium, magnesium, bicacrbonate, phosphate, sulfate
sodium and chloride are passively treansported out of:
the thick ascending limb and into the peritubular fluid
1-DCT and collecting system become permeable to water
2- osmotic concentration of urine= deepest portion of the medulla
under maximum ADH stimulation
ureter epithelum (inside to out)
1- transitional
2- smooth muscle
3- outer connective tissue layer
transitional epithelium
inner mucosa and the surrounding lamina propria
ureter epithelium from the ______ muscle
detrusor muscle
contraction of the detrusor muscle causes...
compresses the urinary bladder and expels its contents into the urethra
streth receptors provide adequate stimulation to parasympathetic preganglionic neurons
micturation reflex
action potentials are carried by...
efferent fibers located within the pelvic nerves
efferent fibers then stimulate...
ganglionic neurons in the wall of the urinary bladder
ganglionic neurons then stimulate...
contraction of the detrusor muscle
micturation reflex problems
muscle looses muscle tone, less effective at voluntary movement
involuntary release of urine
a slow leakage