Meninges and Cerebrospinal Fluid BY: Marianne Johnston
What are 3 types of Meninges and what are they? <ul><li>Dura Mater </li></ul><ul><li>Arachnoid Mater </li></ul><ul><li>Pia...
Dura Mater: <ul><li>A thick durable membrane that is closest to the skull. </li></ul><ul><li>A sac which envelops the arac...
Arachnoid Mater <ul><li>Name from its spider web like appearance. </li></ul><ul><li>Exists as a thin, transparent membrane...
Pia Mater <ul><li>The Meningeal envelope which firmly adheres to the surface of the brain and spinal cord. </li></ul><ul><...
What is Cerebrospinal Fluid Made Of? <ul><li>It is  ma de of 15 to 45 mg protein ( wh ich is lo wer  in children) and 50/8...
What is the Function of  Cerebrospinal  Fluid? <ul><li>It helps  nourish, support,  and remove metabolic  wastes. </li></u...
What is Meningitis? <ul><li>It is an infectious disease characterized by inflammation of the meninges usually due to a bac...
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Johnston Anatomy Powerpoint

  1. 1. Meninges and Cerebrospinal Fluid BY: Marianne Johnston
  2. 2. What are 3 types of Meninges and what are they? <ul><li>Dura Mater </li></ul><ul><li>Arachnoid Mater </li></ul><ul><li>Pia Mater </li></ul>
  3. 3. Dura Mater: <ul><li>A thick durable membrane that is closest to the skull. </li></ul><ul><li>A sac which envelops the arachnoid and has been modified to serve several functions. </li></ul><ul><li>Surrounds and supports the large various channels carrying blood toward the heart. </li></ul>
  4. 4. Arachnoid Mater <ul><li>Name from its spider web like appearance. </li></ul><ul><li>Exists as a thin, transparent membrane. </li></ul><ul><li>Does not follow the convolutions of the surface of the brain and is a loosely fitting sac. </li></ul>
  5. 5. Pia Mater <ul><li>The Meningeal envelope which firmly adheres to the surface of the brain and spinal cord. </li></ul><ul><li>It is a very thin membrane composed of a fibrous tissue covered on its outer surface by a sheet of fat cells thought to be impermeable to fluid. </li></ul>
  6. 6. What is Cerebrospinal Fluid Made Of? <ul><li>It is ma de of 15 to 45 mg protein ( wh ich is lo wer in children) and 50/80 mg gluc ose (two thirds of blood gluc ose ). </li></ul>
  7. 7. What is the Function of Cerebrospinal Fluid? <ul><li>It helps nourish, support, and remove metabolic wastes. </li></ul><ul><li>It mainly cushions the brain to make knocks to the head have less of an effect. </li></ul>
  8. 8. What is Meningitis? <ul><li>It is an infectious disease characterized by inflammation of the meninges usually due to a bacterial or viral infection. </li></ul>

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