79. The blood-brain barrier (BBB)

  1. The blood–brain barrier (BBB) is a nonpermeable membrane that separates the circulating blood from the brain and extracellular fluid in the central nervous system (CNS). (T/F?)
  2. The blood–cerebrospinal fluid barrier (BCSFB) is a barrier that separates blood from the cerebrospinal fluid (CSF). (T/F?)
  3. Capillary endothelial cells in the brain are linked by tight junctions which normally do not exist in the rest of the circulation. (T/F?)
  4. Area postrema and amygdala are parts of the brain that lack normal blood-brain barrier. (T/F?)
  5. When the meninges are inflamed the blood-brain barrier can be disrupted, which can increase the penetration of the antibiotics into the brain tissue. (T/F?)
  6. Disruption of the blood-brain barrier is characteristic for myasthenia gravis. (T/F?)

  1. F
  2. T
  3. T
  4. F
  5. T
  6. F