Which of the following is correct regarding CSF?
a. CSF is produced by the arachnoid granulations.
b. The total brain volume of CSF is about 1250 ml.
c. CSF carries nutrients to neurons.
d. More than 12 hours are required to replace half of the CSF volume in a human brain.
e. Drainage of CSF would result in compression of brain tissue onto the ventral skull surface.
Answer: e. Drainage of CSF would result in compression of brain tissue onto the ventral skull surface.
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a. Eliminate possible feelings of gullibility in the participants. b. Emphasize the role of participants as "co-investigators" in the research venture. c. Use double deception as part of the research design. d. Provide an explanation for the necessity for the use of deception.
The center of the neural tube becomes ___________, whereas the outside tissue becomes ___________
a. the ventricles; the brain tissue b. the brain tissue; the ventricles c. the forebrain; the hindbrain d. the hindbrain; the forebrain e. the ventricles; the forebrain