Macrominerals Flashcards
1
Q
name the macrominerals
A
sodium (Na)
potassium (K)
calcium (Ca)
magnesium (Mg)
2
Q
macrominerals are needed in ____ amounts
A
gram doses
3
Q
function of sodium
A
rising phase of AP of nerve & skeletal muscle
4
Q
function of potassium
A
falling phase of AP of nerve & skeletal muscle
5
Q
function of calcium
A
- necessary for muscle contraction
- constituent of bone
- allows release of NT at presynaptic terminal
6
Q
function of magnesium
A
- (in NMDA & AMPA receptor) modulates entry of Ca and Na into postsynaptic neuron
- cofactor for kinases
7
Q
Na is higher in the _____
A
extracellular fluid
8
Q
K is higher in the ____
A
intracellular fluid
9
Q
Ca is higher in the ____
A
extracellular fluid
10
Q
Mg is higher in the ____
A
intracellular fluid
