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kidney
test 3
40
Pathology
Undergraduate 1
03/15/2013

Additional Pathology Flashcards

 


 

Cards

Term
Three componets of urine
Definition

Filtration

reabsoprtion

secretion

Term
what is a podocyte
Definition
hold capillaries away from each other so that fluyid can pass easy
Term
Purpose of glomerulus
Definition
  • get rid of waste
  • return good looking blood to body
  • control flow
  • control bp, bv
Term
filtrate is sim to plasma except
Definition
there are no protien RBC, WBC, that get out
Term
how does glomerular filtration occure
Definition
  • Glomerular cells sit on B membrane
  • Epithelium cells sit along b membrane and stand on pseudopods
  • Fluid filter between pseudopod legs ( to get in blood)
Term
Why are pseduopods important?
Definition
allows fluid to be filtered (ist filtration_) to get out of capillary
Term
What is Vasa Recta
Definition

Netrwork of blood vessels that surround nephrone

 

How reabsoprtion and secretion takes place

Term
Goal of Nephron
Definition
Return blood to body as perfect as possible
Term
Filtration
Definition
Blood enters bowmans capsule- initial formation of urine
Term
Reabsoprtion
Definition
Get rid of everything water electrolytes aminoacids return to blood
Term
Secretion
Definition

Bring some back in appropriate amounts

  • distal tubule
  • Fine adjustment
Term
What does the Juxtaglomerular apparatus concists of?
Definition
  • Maculadensa= check na content
  • Juxtaglomerular cells = Check pressure
Term
What is the purpose of the J apparatus
Definition

Control urine Flow

&BP

Term
What is responsible for the release of renin ( starting whole RAA)
Definition
J cells
Term
How J cells work
Definition
  • Sence stretch on afferent arteriole as blood goes in
  • Maculadensa check na content and pressure
  • adjust GFR
Term
When urine reaches the D- tubule (explain)
Definition
  • Jcells measure b/f in afferent arteriole and urine flow & comp @ the distal tubuels
  • Renin released in responce to decrease pressure and increase urine sodium
Term
In crease na means?
Definition

Hypertonic

need more fluid

Term
Renin Release initiates the RAA ( explain)
Definition
  • Renin convert angiotensinogen
  • angiotension 1 (mild vasoconstrict)
  • a1 hook up with ace in lungs
  • create angio 2 (strong)
  • release aldosterone na water reabsorbed, bv increase k+ excreted decreased k+
Term
Release of Renin causes
Definition
water & na reabsorbed
Term
Release of aldosterone will do what?
Definition
decrease k+
Term
ADH explain
Definition
  • Hypothalmus sense increase osmolality
  • send message to post pituitary release ADH
  • ADH make collect duct more perm
  • water is reabsorbed from urine to blood
Term
What is ANP
Definition

overstretched Atria

- to much fluid, to much preload coming back to hrt

Term
What is B type? BNP
Definition

overstretched vent

decreased in stretch turns BNP off

Term
ANP & BNP cause
Definition
  • Kidneys stop reabsorbing na, H20
  • decrease bV, BP
  • decrease stretch & wrk load of hrt
Term

Pt with severe renal disease why?

anemia?

weak bones?

Definition

o erythropoeitin

or may be undergoing hemodialysis

 

o vit d activation, can't absorb ca+

Term
Gold standard renal function?
Definition
Serum creatin
Term
Horse shoe Kidney
Definition

Don't sep

congenital

can be benign

can be addressed surgically

Term
inherited kidney disorder
Definition

nephrophisis

polycystic kidney disease

Term
Nephronphisis
Definition

childhood

distal tubular

atrophy/sclerosis

urine tubes thick sclerotic

complete renal problems

Term

Polysytic kidney disease

(autosomal dom)

Definition

assystemic-(onekidney)

associated with vasular disease

AAA or cerbral aneurysms

Term

Polysystic kidney disease

(recessive)

Definition

bilateral

other problems

lung imparment

portal HTN, liver disease increase mortality

Term
Cystic disorders of cystine disease of kidney
Definition

Fluid sac w/i tubules

  1. simple:- don't affect renal function
  2. acuired:- result from hemodialysis
Term
Medullary cystic disease
Definition

disease of collecting ducts

sponge-like cysts

cause stasis urine/infection

Term
consequences of cysttic dilation of renal tubules or tract
Definition
  • Hyronephrosis
  • Staisis of urine
Term
Compartment Syndrome
Definition

tissue exspand decrease bf

 

decrease bf=tissue ishemia= injury= inflammation process

Term
explain obstruction renal calculi (theroies)
Definition

Sat- supersat

Matric- organic

inhibitor- absence/ defic enzyme that inhibits stone formation

Term
four stone types
Definition

calcium- oxlate

struvite- mag, ammonia phosphate

uric acid= gout

cystine= genetic

Term
tx renal calculi
Definition

increase fluid

diet

drugs that bind to ca+ oxalating so its not absorbed

diet change increase or decrease ph

thiazide diuretics

lithrotripsy-open removal

Term
Uti
Definition

Usually ascending from bladder

natural defences we have

  1. washout
  2. protective mucous
  3. local immune + iga
  4. nf
Term
contributes to uti
Definition
short eurethra
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