Which of these has a higher concentration in cerebrospinal fluid than in the blood? A) K⁺ B) H⁺ C) Ca²⁺ D) ^HCO3^- E) Na⁺

Question

Quizplus · Accepted Answer

H⁺ (hemoglobin) has a higher concentration in cerebrospinal fluid than in the blood due to its size and charge, which makes it difficult to cross the blood-brain barrier. This is important for the regulation of oxygen transport and brain metabolism. The other choices do not have a significantly higher concentration in cerebrospinal fluid than in the blood.

Which of These Has a Higher Concentration in Cerebrospinal Fluid