Multiple Choice
What is the major cation found in intracellular fluid?
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11. Nervous Tissue and Nervous System
Ions - Sodium and Potassium
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What is the most abundant intracellular cation?
A
Magnesium (Mg2+)
B
Calcium (Ca2+)
C
Sodium (Na+)
D
Potassium (K+)
Verified step by step guidance1
Understand the concept of intracellular cations: Cations are positively charged ions, and intracellular cations are those found within the cells.
Identify the common intracellular cations: The main cations found inside cells include potassium (K+), magnesium (Mg2+), calcium (Ca2+), and sodium (Na+).
Recall the role of potassium (K+): Potassium is crucial for maintaining cell membrane potential and is the most abundant cation inside cells.
Compare the concentration of these cations: Potassium (K+) is present in much higher concentrations inside cells compared to sodium (Na+), calcium (Ca2+), and magnesium (Mg2+).
Conclude that potassium (K+) is the most abundant intracellular cation, based on its essential role and high concentration within cells.
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