Which of the following is true of the subarachnoid space?
A. It contains cerebrospinal fluid, which cushions and nourishes the neurons of the spinal cord.
B. It contains blood, which brings oxygen to the spinal cord neurons.
C. It is attached to the outer edge of the spinal cord.
D. It lies between the dura mater and the arachnoid mater.
E. None of these is true of the subarachnoid space.
Answer: A
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