Chapter 26 - Urinary Flashcards
Chapter 26 - Urinary
functions of urinary system
retaining water ion regulation nitrogen waste removal Vit D hormone RBC production hormone, etc
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what happens when water is retained?
increases blood volume and blood pressure
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what increases acidity
H+ ions
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organs of urin sys
kidney
ureter
bladder
urethra
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organs impacting urin sys
adrenal
heart
posterior pituitary
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urination also called
micturation
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kidneys are ________ shaped
bean shaped
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where are kidneys located
L-2
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what supports kidneys
renal capsule
adipose capsule
renal fascia
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what is on top of kidneys
adrenal glands
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where do the blood vessels enter kidney
hilus
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just below the celiac trunk are the ________ branching off to the kidnesy
right/left renal arteries
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leaving the kidneys are the right/left
renal veins
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________ and ________ are weaved around the renal pyramids
interlobular and arcuate arteries and veins
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the arteries eventually become the ________, ________, and ________
afferent and efferent arterioles
pepitubular capillaries
vasa recta
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outer layer of kidney
cortex
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inner “core” of kidney
medulla
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anatomy parts of kidney
calyx - major and minor
renal (medullary) pyramid
renal papilla
renal pelvis
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what opens to the ureter
renal pelvis
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functional units in kidney
nephrons
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what nephrons are located in cortex
cortical nephrons
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what % of nephrons in cortex
85%
Chapter 26 - Urinary
what surrounds the cortical nephrons
peritubular capillaries
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other neprhons in kidney
juxamedullary
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where are juxamedullary nephrons founds
cortex and medulla
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what surrounds the juxamedullary
vasa recta
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nephron consists of
glomerular PCT Henle loop DCT collecting duct papillary duct
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another name for glomerular
bowman’s capsule
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what does glomerular contain
glomerulus
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what surrounds the glomerulus
podocytes
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PCT
proximal convoluted tubule
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2 arms of Henle loop
ascending/descending
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DCT
distal convoluted tubule
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where does blood enter in nephron
glomerulus
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________ is what is filtered from the blood in the nephron
filtrate
Chapter 26 - Urinary
where does the filtrate go
capsular space
Chapter 26 - Urinary
blood flow:
blood - afferent arteriole - glomerulus - efferenent arteriole
blood in glomerulus - filtrate into capsular space - PCT - Henle Loop - DCT - collecting duct - papillary duct - minor calyx - major calyx- renal pelvis - ureter - urinary bladder - urethra - discharge
blood to urine flow
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DCT is next to the
arterioles
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“dense spot”
macula densa
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________ are specialized cells which have receptors which detect sodium ions.
macula densa
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what receptors are in macula densa
chem & osmo
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if sodium ions are low, smooth muscle between the DCT and glomerulus ________ release renin
JG (juxtaglomerular)
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hormonal pathway from JG
renin-angiotensin
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renin-angiotensin leads to
increased BP and BV
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________ acts on bone marrow to increase the production of rbc
erythropoietin
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________ is the hormone that completes the Vit D chain
calcitriol
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wastes associated with kidney
urea creatinine ammonia uric acid urobilin/bilirubin
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what is largest % of waste from kidney
urea
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uric acid is from
RNA (purines)
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what gives urine its color
urolilin (bilirubin)
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processes associated with kidney
filtration
reabsorption
secretion
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kidney filtration goes into
capsular space
Chapter 26 - Urinary
kidney reabsorption involves
water
ions removed
Chapter 26 - Urinary
kidney secretion goes into
tubular lumen
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rate of filtration is called
Glomerular Filtration Rate (GFR)
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what is GFR
about 50 gals/day (both kidneys)
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where does most filtration go
back in the blood stream
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what affects GFR?
bp
bv
hormones
stress
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hormones that can change GFR
renin
atrial natriuretic peptide (ANP)
ANF
ANH
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which part of NS impacts GFR
mostly sympathetic
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transport in kidney uses
tubules
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to transport in kidneys means to cross
barriers
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how are barriers crossed in kidney transport
diffusion (gas)
channels (ion)
protein carrier by exchange pump
cotransporter
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active transport requires
ATP
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nephron/filtration:
PCT
water loss
some ion
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nephron/filt
Henle loop descending
water loss, goes to blood stream
Chapter 26 - Urinary
nephron/filt
Henle loop ascending
Na Cl loss, goes to blood stream
Chapter 26 - Urinary
nephron/filt
DCT
some NACl loss
some water loss (via ADH)
NA/K pump - K in filtrate
Chapter 26 - Urinary
nephron/filt
Collecting duct
water loss via ADH
some NA+ loss
Na, K= - K in filtrate
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nephron/fil
Papillary duct
urea loss
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henle loop desc is impermeable to
solutes
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henle loop desc is permeable to
water
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henle loop asc is imperable to
water
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henle loop asc uses
active solute transport
Chapter 26 - Urinary
which henle loop is thicker
ascending
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DCT: part is permeable to water
ADH
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part of DCT - sensitive to
aldosterone
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pathology of DCT
hypokalemia
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________ is low K+ in blood from high alderstone
hypokalemia
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what might cause hypokalemia
long term stress
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collecting duct permeable to
water
Chapter 26 - Urinary
papillary duct permeabl to
urea
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________ is ADH - water reabsorption - highly concentrated urine
ADH effect
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what increase urine output
diuretics
coffee
alcohol
thiazieds
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kidney is involved with a ________ system
buffer
Chapter 26 - Urinary
-H+ + HCO3 –} H2CO3 –} CO2 + H2O
bicarbonate and carbonic acid
buffer system
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________ increase protein in urine
marathon, distance swimmer
proteinuria
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________ blood in urine
stone passing, kidney problems, etc
hematuria
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________ kidney failyer, permt damage
renal failure
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________ glucose in urine
high carbo, diabetes mellitus
glycosuria
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________ increase in amino acids in urine
high protein
aminoaciduria
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________ ketone bodies excreted
atkins/low carb
ketonuria
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________ are long tubes
ureters
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the ureters re between
kidneys and bladder
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where are kidney stones usually felt
ureter
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bladder has what type of epithelium
transitional
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how much can bladder hold
1 liter
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important muscle in bladder
detrusor muscle
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what is function of detrusor muscle
expels contents of uretha
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neck of bladder contains
internal urethral sphincter
Chapter 26 - Urinary
what overrides the external urethral sphincter
internal urethral sphincter
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which sphincter is under involuntary control
internal
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which sphincter is under voluntary control
external
Chapter 26 - Urinary
where is the external urethral sphincter located
urethra
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urethra same size in all
no. men larger