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chapter 17
renal
18
Physiology
Undergraduate 4
05/30/2012

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Term
urine is transported..
Definition
using peristalsis
Term
Detrusor muscles ..
Definition
line the wall of the bladder
Term
Internal Urethral Sphincter
Definition
composed of smooth muscle
Term
External urethral sphincter
Definition
composed of skeletal muscle
Term
Guarding reflex
Definition
prevents involuntary empyting of the bladder
Term
micturition center
Definition
located in the pons, alerts the brain the bladder has streched
Term
nephrons
Definition

functional units of kidney aid in urine production

 

consist of Glomerular Corpuscle, loop of henley, distal convoluted tubule, and collecting ducts

Term
glomerular corpuscle
Definition
Fenestrated-large pores allow water and solutes to leave but not blood cells and plasma proteins
Term
Sympathetic Nerve Effects on bladder
Definition
In fight/flight vasoconstriction occurs, which diverts blood to heart and muscles and decreases urine production
Term
Ascending loop of henley
Definition
walls are not permeable to water so osmosis does not occur
Term
Descending loop of henley
Definition
NOT permeable to salt but is permeable to water
Term
Secretion
Definition
Kidneys must also filter excess ions and wastes from the blood
Term
good way to test for renal health....
Definition
To measure glomular filtration rate
Term
Glycosuria
Definition

Too much glucose in the urine, indicated diabetes is present

 

extra glucose in blood results in poor water reabsorption and possible dehydration

Term
Electrolyte balance
Definition

kidneys match excretion to ingestion

NA, K, & CL

Term
Hyperkalemia
Definition
stimulates secretion of K but inhibits secretion of H , can lead to acidosis
Term
acid base regulation of kidneys
Definition
Kidneys maintain blood Ph by secreting H+ that is why urine is acidic
Term
Acute renal failure
Definition
the loss of ability of kidneys to regulate blood volume ph and solute concentrations which causes kidneys to crash in matter of days or hours
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