Most diffusable ion in excitable tissue is

NEET PG Physiology
#1

Most diffusable ion in excitable tissue is -

    1. Na+
    1. K+
    1. PO4-
    1. 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.