IUPUI physiology lab quiz 1

Aqueous Solution

a solution in which water is the solvent

suspension

particles are insoluble and will settle at the bottom

colloid suspension

colloids are very small particles that do not dissolve but are small enough to stay in suspension without periodic mixing

homogenous solution

solutes are not evenly dispersed throughout the solvent

solvent

the substance in which the solute dissolves in

solute

Substance being dissolved

saturated solution

a solution that cannot dissolve any more solute under the given conditions

percent solution

the number of parts of solute per 100 parts of solution

molarity

the number of moles of solute dissolved per liter of solution

steps to find molarity

- check atomic weight

-how many L it is asking for

- calculate

osmolarity

number of particles in a solution

moles

mass/molar mass

scanning lens

4x magnification

low power lens

10x magnification

high power lens

40x magnification

oil immersion lens

100x magnification

calculating total magnification power

multiply ocular lens power by objective lens

ocular lens

Eyepiece of a microscope

objective lens

the part of a compound light microscope that is located directly above the specimen and that magnifies the image of the specimen

iris diaphragm

controls the amount of light passing through the specimen

condenser

focuses light on specimen

coarse focus

moves stage up and down

fine focus

Moves the stage slightly to sharpen the image

the lower the power of your objective lens..

the wider field of view, the less light you need

Intracellular fluid (ICF)

fluid within cells

extracellular fluid (ECF)

fluid outside cells

Total Body Water (TBW)

60% of body weight

how much of the TBW is ICF?

2/3

how much of the TBW is ECF?

1/3

interstitial fluid

fluid between cells

How much of ECF is interstitial fluid?

80%

How much of ECF is plasma?

20%

diffusion

the random movement of atoms or molecules from one area to another in both directions

net diffusion

the overall movement of the atoms or molecules, from the area of higher concentration to the area of lower concentration, it continues until there is an equal distribution of the atoms or molecules

flux

the rate of movement of a solute measured as amount of movement of the solute per time

semipermeable membrane

A membrane that allows SOME molecules to pass through

freely permeable

anything can pass through

impermeable

not permitting passage

Osmosis

Diffusion of water through a semipermeable membrane

dialysis

a form of ultrafiltration of fluid and diffusion of solutesacross a semi- or selectively permeable membrane

Tonicity

a solution and the effect of the solution on the volume of a cell

isotonic solution

the volume of the cellremains the same.

Hypertonic solution

he volume of the cell decreases. Cell shrink

Hypotonic solution

the volume of the cell will increase. Cell swell.

Metric conversion acronym

King (kilo)

Henry (hecto)

Died (deca)

unusually (unit m, l, g)

drinking (deci)

chocolate (centi)

milk (milli)