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Mod 2 Ch. 31

Ch. 31 Urinary System

ureter connects kidneys to bladder
3 functions of the kidneys 1. Filtration 2. Reabsorbtion 3. Secretion
Filtration -work done by the nephron on the blood -water, wastes, and other substances form filtrate
Reabsorbtion -occurs in the network of tubules within the kidneys -99% of water is reabsorbed and returned to bloodstream -good material is reabsorbed back into the body
Secretion -waste products from filtrate are mixed with water to make urine -urine is secreted from tubules into calyx, then into the renal pelvis -from there it goes into the ureters, stored in the bladder, and then emptied through the urethra out of the body
renal pelvis located at the top portion of the ureter
nephron -functional unit of kidney -1 million / kidney -Bowman's capsule (glomerular) and glomurulus
glomerulonephritis -aka glomerular disease -inflammation of the kidneys that primarily affects glomeruli
bladder -can store 16 oz / 500 mL of Urine
physical characteristics of urine -clear, not cloudy -straw colored -mildly aromatic odor -slightly acidic pH of 6
hilum -located on the curved-in portion of the kidney -contains the calyx and renal pelvis
anuria absence of urination
oliguria scanty or little urination
polyuria excessive urination
cystitis inflammation of bladder
dysuria painful, burning, or difficult urination
incontinence lack of urinary control -stress -overactive bladder -urge -overflow -enursis (while sleeping) -transient
renal calculi kidney stones which cause obstructive disorder of the kidney
lithotripsy shock waves used to break up stones (renal calculi) in the body
renal colic pain that's caused by kidney stones
ESRP -End-stage renal disease -qualifies for Medicare -last stage of kidney failure
dietary restrictions for those prone to kidney stones control intake of foods containing calcium and oxalate
calcium-containing foods dairy, leafy, dark green vegetables, almonds, and sardines
oxalate-containing foods beets, chocolate, tea, coffee, cola, nuts, rhubarb, strawberries, wheat bran,
renal medulla inner layer of kidney
renal cortex outer layer of kidney
papilla open into this structure renal calyx
Inside a nephron is the renal corpuscle which contains: -Bowman's capsule -glomerulus
urethra tube that carries urine from the body
nocturia urination at nite
nephritis kidney infection
bacteria causes a UTI
micturition urination
500 mL how much urine a bladder can hold
Created by: vanstellee