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Urinary Sys Exam CCC

Urinary System CCC PN 105

most important homeostatic organ in body kidneys
where are kidneys under back muscles just behind pareital peritoneum, just above waist
which kidney is a little lower right kidney
which kidney is a little higher left kidney
what protects the kidneys ribs, fat, and back muscles
outer layer of kidneys cortex
inner portion of kidneys medulla
triangular division of medulla in kidney pyramids
narrow, innermost end of pyramid in kidney papilla
expansion of upper end of ureter inside kidney pelvis
division of renal pelvis calyces
microscopic units of kidneys nephrons
parts of nephron renal corpuscle bowmans capsule, glomerulus
parts of nephron renal tubule proximal and distal convuluted tubules, loop of henle, collecting tubule
more than ____ total blood pumped by heart each minute enters the kidneys 20%
functions of kidneys excrete toxins and nitrogenous (urea, ammonia) wastes, regulate chemical levels in blood, maintain water balance
kidneys help regulate blood pressure by secretion of renin
hormone that constricts blood vessels and raises blood pressure renin
absence of urine anuria
small amounts of urine oliguria
large amounts of urine polyuria
normal urine output each day 1500-1600 mL
normal urine output each hour 60 mL
processes to form urine filtration, reabsorption, secretion
where does urine formation occur in nephron
process continually goes on in renal corpuscle filtration
movement of substances out of renal tubules reabsorption
movement of substances into urine secretion
anti-diuretic hormone, controls urinary volume by decreasing it ADH
narrow, long tubes with expanded upper end inside kidney and lined with mucous membrane ureters
ureters are located in renal pelvis
function of ureter drain urine from renal pelvis to urinary bladder
elastic, greatly expandable muscular organ lined with mucous membrane urinary bladder
function of urinary bladder storage of urine, voiding of urine
why is trigone portion of urinary bladder different has no rugae
narrow tube from urinary bladder to exterior, lined with mucous membrane urethra
opening of urethra to exterior urinary meatus
function of urethra passage of urine from bladder to exterior, also moves semen in men
passage of urine from body micturition
types of regulatory sphincters internal and external urethral
involuntary regulatory sphincter internal urethral sphincter
voluntary regulatory sphincter external urethral sphincter
function of regulatory sphincters seals off bladder for urine accumulation
amount of urine an average adult can hold 600 mL
permits urine storage with minimal increase in pressure bladder wall
urine produced but not voided urinary retention
no urine produced but bladder is normal urinary suppression
urine is voided involuntarily, may be caused by injury, stroke; urine retention can also cause incontinence
bladder infection, buildup of bacteria can spread and cause kidney infection cystitis
interstitial cystitis, need for frequent urination; amounts voided are small and extreme urgency and pain are common overactive bladder
Created by: cmp12345



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