PPNT 1

Question 1

ICF is MOSTLY COMPOSED OF

Answer 1

POTASSIUM (K+) AND PROTEINS

Question 2

ECF is MOSTLY composed of

Answer 2

Sodium (Na+) and chloride

Question 3

ICF vs ECF

• • 1 difference
• • 2 similarities

Answer 3

• • Difference is that they have different composition

- - Similarity is that they are electroneutral (balance in charge) and isotonic ( balance in dissolved stuff)

Question 4

Amount

Answer 4

millimoles (mmol), milliequivalents (meq), or

milliosmoles (mosm)

Question 5

mM-millimolar

Answer 5

number of whole molecules in water (1mM NaCl = 1 mmol of NaCl in 1L of water)

Question 6

mOsm

Answer 6

• Number of ions in water
• 1mM NaCl = 1mOsm of Na+ and 1mOsm of Cl- = 2 total of mOsm
• Important when considering concentration gradients
• If non-dissociable (glucose) then mMol = mOsm

Question 7

mEq

Answer 7

• CHARGE of dissociated ions
• 1mOsm of Na+ = 1mEq of Na+, 1mOsm of Ca2+ = 2mEq of Ca2+
• Important when considering electrochemical gradients

Question 8

pH

Answer 8

logarithmic scale used to measure H+ (ACID) ions (pH = -log [H+])

Question 9

Basis for communication is

dependent on

Answer 9

K+ gradient (located MOSTLY on the ICF)

Question 10

Proper absorption of

nutrients is dependent in

Answer 10

Na+

gradient (located MOSTLY outside the cell)

Question 11

Movement of muscles

requires movement of

Answer 11

Ca2+

Question 12

Compartment content is

based on

Answer 12

membrane

permeability

Question 13

Capillary membrane

Answer 13

Not selective (filters based on size)

Note: No proteins(albumin RBCs, ect) in intrestial fluid

Question 14

channels

Answer 14

-Hole in membrane for specific

solutes to move along gradient

Question 15

transport proteins

Answer 15

-Can move large solutes with gradient
-Can also move solutes against
concentration gradient

Question 16

Osmolarity

Answer 16

the concentration of a solution expressed as the total number of solute particles per liter.

Question 17

Osmolality

Answer 17

the concentration of a solution expressed as the total number of solute particles per kilogram.
-• 1L water = 1Kg water
• Basically the same number

Question 18

Osmotic pressure (π)

Answer 18

the pressure that would have to be applied to a pure solvent to prevent it from passing into a given solution by osmosis, often used to express the concentration of the solution.

Question 19

Tonicity

Answer 19

comparison of two fluids
separated my a semi-permieable
membrane, with respect to the bathing
solution.

Question 20

Hypotonic (Hyposmotic)

Answer 20

Inside of cell has more dissolved solutes • Water rushes in, cell bursts( lysed)

Question 21

Isotonic (Isomotic

Answer 21

Dissolved solutes are equal, no net water

movement

Question 22

Hypertonic (Hyperosmotic

Answer 22

Less solute inside

• Water rushes out, cells shrivel