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Table 1 Ion concentrations and pH in choroid plexus, CSF and plasma of adult rats

From: Fluid and ion transfer across the blood–brain and blood–cerebrospinal fluid barriers; a comparative account of mechanisms and roles

 

Ion concentrations (mmol per litre of H2O)

LV

4th V

CSF

Plasma

Na+

49–53

46*

55–58

56*

152–156

148–155

K+

95–97

87–89

2.99–3

3.9–4.6

Cl

62–64

67*

63–64

67*

126–129

113–114

HCO3

(11)

(11)

22–24

21

pH

7.06

7.04

7.33

7.44

  1. LV lateral ventricle; 4th V 4th ventricle
  2. Data from [171] except values marked * from [170]. Values of [HCO3 ] in parentheses were calculated from pH and pCO2