water balance regulation ch10 Flashcards
osmoregulation
Regulation of water balance by controlling concentrations of dissolved solutes that influence osmosis
تنظيم توازن الماء من خلال التحكم في تركيزات المواد المذابة التي تؤثر على عملية التناضح
sal uoot=مواد
solute
How is water gained and lost by animals?
Water gain :
Drinking
Eating
Osmosis
Cellular respiration
Water loss :
Urination
Defecation
Evaporation
Osmosis
da fic ation=تغوط
defecation
Movement of water from areas of low solute concentration to areas of high solute concentration.
Osmosis
most invertebrate living in salt water are ________________
N virt ib rit
in vert e brate=اللافقريات
osmoconformers
ooz moh cin form ers
osmo conformer
most invertebrate living in salt water or fresh water are ________________
osmoregulator
organism that let the composition of their body fluid reflect that of their environment
osmoconformers
organism that maintain their fluid and solute concentration within narrow range
osmoregulator
Structures for Regulating Water Balance
Malpighian tubules in insect
kidney in human being
mal pig yin tube ills
mal pig hian tubule
Malpighian tubule
definition?
function?
1-Small tubules extend from the gut
2-Resorption of water and potassium ions into the blood during digestion
3-Excrete waste product as feces
4-use active transport to pump ions out of gut
Kideny function :
1-Filters blood by removing solutes and metabolic waste while regulating the organism’s water balance
kideny Functions vary depending on the group of ____________
1-vertebrates
example : salt water versus fish water
Freshwater fish :
1-cell is hypertonic to the environment
2-kidney will get rid of excess water by producing large amount of dilute urine
3-water absorbtion through skin
4-active ion uptake through gills
5-dilute urine
salt water fish :
1-hypotonic to the environment
2- kidney will conserve water
3-water loss through skin
4-concentrated salty urine
5-active ion transport through gill
