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What is the most abundant intracellular cation?
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11. Nervous Tissue and Nervous System
Ions - Sodium and Potassium
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What is the major cation found in the extracellular fluid?
A
Potassium (K+)
B
Sodium (Na+)
C
Magnesium (Mg2+)
D
Calcium (Ca2+)
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Understand the concept of extracellular fluid (ECF), which is the fluid outside of cells, including blood plasma and interstitial fluid.
Recognize that cations are positively charged ions. In the context of ECF, the major cation is crucial for maintaining fluid balance and nerve function.
Identify the common cations found in the body: Sodium (Na+), Potassium (K+), Magnesium (Mg2+), and Calcium (Ca2+).
Recall that Sodium (Na+) is the primary cation in the extracellular fluid, playing a key role in osmoregulation and electrical signaling.
Consider the physiological importance of Sodium (Na+) in maintaining blood pressure, nerve impulse transmission, and muscle contraction.
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