Question

question 1 (mandatory) (10 points)
what is the major extracellular cation and what is the major intracellular cation?

Explanation:

In the human body, sodium ($Na^+$) is the major extracellular cation, maintaining extracellular fluid osmolarity and electrical neutrality. Potassium ($K^+$) is the major intracellular cation, playing a key - role in maintaining cell volume and membrane potential.

Answer:

The major extracellular cation is sodium ($Na^+$) and the major intracellular cation is potassium ($K^+$).