Question

question 13 (mandatory) (1 point)
csf glucose is usually ____________ serum glucose.
a) the same as
b) higher than
c) csf never contains glucose
d) lower than

Explanation:

Cerebrospinal fluid (CSF) glucose is typically lower than serum glucose. This is because of the blood - brain barrier and the metabolic needs of the central nervous system. The blood - brain barrier regulates the passage of glucose into the CSF, and the brain cells consume glucose.

Answer:

d) Lower than