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Author Question: Cerebrospinal fluid (CSF) can accumulate around the brain when there is injury to the sites of CSF ... (Read 122 times)

Deast7027

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on: Jun 25, 2018
Cerebrospinal fluid (CSF) can accumulate around the brain when there is injury to the sites of CSF reabsorption, which are called the:
 
  a. arachnoid villi.
  b. epidural foramina.
  c. lateral apertures.
  d. choroid plexuses.

Question 2

What type of cell supports the forming of the blood-brain barrier (BBB)?
 
  a. Endothelial
  b. Schwann
  c. Oligodendrocyte
  d. Astrocyte


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ErinKing

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Reply #1 on: Jun 25, 2018
Answer to Question 1

ANS: A
CSF is reabsorbed through a pressure gradient between the arachnoid villi and the cerebral ve-nous sinuses. CSF absorption does not occur in the epidural foramina, the lateral apertures, or the choroid plexuses.

Answer to Question 2

ANS: D
Endothelial cells in brain capillaries, with their intracellular tight junctions, are the sites of the BBB. Supporting cells include astrocytes, pericytes, and microglia. Schwann cells provide struc-tural support and nutrition for the neurons. Oligodendrocytes form the myelin sheaths.


Deast7027

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Reply 2 on: Jun 25, 2018
Thanks for the timely response, appreciate it

AmberC1996

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Reply 3 on: Yesterday
Excellent

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