Fluid absorption

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Total cards: 24•Content version: v4•Public deck•Updated: 8/1/2026

Card preview (24)

Front (Question)

Group of membrane proteins most cell membranes have

Back (Answer)

Aquaporins

Front (Question)

Osmosis

Back (Answer)

The diffusion of water from a region of high water concentration to a region of low water concentration

Front (Question)

What does osmolarity describe

Back (Answer)

The number of particles in a solution, says nothing about the nature of the particles

Front (Question)

osmotic flux

Back (Answer)

changes the volume of the cell

Front (Question)

what causes an osmotic flux

Back (Answer)

Change in the concentration of a solute that cant cross the membrane

Front (Question)

What does the volume of the cell depend on

Back (Answer)

The concentration of the non-penetrating solutes on the two sides of the membrane

Front (Question)

ECF non-penetrating solutes

Back (Answer)

Na+ Cl-

Front (Question)

ICF non-penetrating solutes

Back (Answer)

K+ (and organic anions)

Front (Question)

Cell membrane

Back (Answer)

Selective barrier

#10

Front (Question)

Selective barrier

Back (Answer)

permeable to some substances but not all

#11

Front (Question)

what substance is there no barrier to

Back (Answer)

water

#12

Front (Question)

which 2 things follow their own concentration gradient

Back (Answer)

-partles water

#13

Front (Question)

What cant follow its own gradient

Back (Answer)

Solutes

#14

Front (Question)

osmotic pressure

Back (Answer)

The pressure that must be applied to a solution containing non-penetrable solutes to prevent the net flow of water into the solution

#15

Front (Question)

The lower the water concentration

Back (Answer)

the higher the osmotic pressure

#16

Front (Question)

the greater the osmolarity

Back (Answer)

the greater the osmotic pressure

#17

Front (Question)

Rough ECF osmolarity

Back (Answer)

300mOsm

#18

Front (Question)

osmolarity - whats it measured in

Back (Answer)

milliosmoles

#19

Front (Question)

Tonicity of the solution

Back (Answer)

Number of non-penetrating solute particles

#20

Front (Question)

Isotonic solution

Back (Answer)

Solution of 300mOsm of non-penetrating solutes (wont cause a cell placed in to swell or shrink)

#21

Front (Question)

Hypotonic solution

Back (Answer)

Solution less than 300mOsm of non-penetrating solutes (will cause cells to swell)

#22

Front (Question)

Hypertonic solution

Back (Answer)

Solution more than 300mOsm of non-penetrating solutes (will cause cells to shrink)

#23

Front (Question)

What happens to cells suspended in urea

Back (Answer)

They will burst

#24

Front (Question)

Why do cells burst when suspended in urea

Back (Answer)

• Urea can move across membrane - Not an effective osmole