Most diffusable ion in excitable tissue is -
-
- Na+
-
- K+
-
- PO4-
-
- Cl-
0 voters
EXP:
Points to note
-
Concentration of ions
· Na+ concentration higher in ECF
· K+ concentration higher in ICF
· Cl- concentration higher in ECF
-
K+ leak channels allow K+ to move from ICF to ECF - Na+ is prevented from entering to the cell.
Thus diffusion is highest for K+, then Cl- and least for Na+, when cell is at rest.