Renal Flashcards
ammoniotelic
majority of aquatic animals
excrete ammonia through gills after breaking down a.a
ureotelic
terrestrial animals
excrete urea from liver
uricotelic
avian. reptiles
excrete uric acid
osmoconformers
osmolarity adjusts to surroundings
hyperosmotic regulator
osmolarity greater than surroundings
water constantly going into soft parts exposed
hypoosmotic regulator
osmolarity less than surrounding
water constantly going out, excrete Na/Cl in glls
specific gravity
density of volume of fluid in relation to density of water
afferent arteriole
vascular smooth muscle
variable resistor to blood flow, dilates or constricts
take toward the glomerulus
efferent arteriole
vascular smooth muscle
variable resistor to blood flow, dilates or constricts
take away from glomerulus
JGA
next to glomerular apparatus
associated with afferent arteriole
helps to control vascular resistance
mesangial
between JGA and efferent arteriole
macula densa
above all the “action”
autoregulation
kidneys own ability to control variable resistors in the arterioles
kidney can sense changes in pressure and flow
hypovolemia
low blood volume, caused by hemorrhage
drop in blood pressure (Pcap), lower glomeular fltration
baroreceptors
pressure receptors, tonically active, sense distension of vessels
mechanically linked to Na+ channels
-rate Na+ influx directly related to action potential frequency