homeostasis
the maintenance of steady internal conditions
the passive diffusion of water across a membrane
osmosis
the skin excretes water and salt through __________
sweat
what type of waste does the urinary system excrete
nitrogenous
the mechanism by which animals maintain an internal temperature
thermoregulation
a combination of solutes and solvent
a solution
the urinary structure of an earthworm is called a ______
nephridia
the functional unit of the kidney
nephron
maintenance of body temperature at two different levels, depending on activity
heterothermic
in a hypotonic solution, animal cells would _______ water
gain
insects excrete fluid from _____________
malpighian tubes
the 4 major processes of the urinary system
filtration, reabsorption, secretion, excretion
animals that derive heat from external sources
ectotherms
in a hypertonic solution, plant cells would _________
plasmolyze (shrink)
the control of uptake and loss of water and solutes
osmoregulation
the organ of the urinary system that holds the urine until release
bladder
derive body heat from their metabolism (most birds and mammals)
endotherms
when the concentration of solutes is the same on both sides of a membrane (inside the cell and outside of the cell)
isotonic
loss of water vapor occurs in what part of the body
the lungs
loss of control of urination
incontinence