Osmoregulation Flashcards
What is osmoregulation?
Maintenance of constant water levels in the body fluids of an organism
why is osmoregulation important?
prevents cells bursting or shrinking when water enters or leaves by osmosis
Describe what happens to an animal cell if its placed in a solution with a higher water concentration?
Higher concentration of water in surrounding solution
Water molecules move down their concentration gradient into cells by osmosis
pressure inside cells increase; bursts (lysis)
Describe what would happen to an animal if its placed in a solution with a lower water concentration?
lower concentration of water in surrounding solution
Water molecules move down their concentration gradient out the cell by osmosis
Pressure inside cell decreases; shrinks (crenation)
Describe what happens to an animal if its placed in a solution with an equal water concentration
no net movement of water molecules in and out the cell
Describe function of kidneys
remove toxic substances from the body
Alters blood water levels
Alters blood ion levels
What is urine?
waste product of kidney containing urea, excess water and excess ions
How is urea produced?
In the lover, urea is produced from the breakdown of excess amino acids
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flashcard 99
yes
what is the function of the renal artery?
supplies blood to the kidneys
what is the function of the renal vein?
drains blood from kidneys
what is the function of the ureter?
takes urine to bladder from kidneys
What is the function of the urethra?
releases urine from the bladder out the body
