Which of the Following Would Not Apply to the Blood-Brain

Multiple Choice

Which of the following would not apply to the Blood-Brain Barrier?

A) Water-soluble substances cross by active transport whereas substances such as creatinine, urea, and most ions, cross very slowly.
B) It protects the CNS from harmful substances and pathogens by preventing passage of these substances from blood into the interstitial fluid of brain tissue.
C) Proteins and most antibiotic drugs-do not pass at all from the blood into brain tissue.
D) Trauma, toxins, and inflammation will generally not harm the blood-brain-barrier.
E) Lipid soluble substances, such as oxygen, carbon dioxide, alcohol, and most anesthetic agents, easily cross the blood-brain barrier.