What anatomical structure produces cerebrospinal fluid? a. Dura mater b. Arachnoid mater c. Choroid plexus d. Lumbar plexus e. Pia mater

Identification of the Cerebrospinal Fluid Producer

1. Understanding the Options: The question asks which anatomical structure is responsible for the production of cerebrospinal fluid (CSF). The options provided include:

   • a. Dura mater
   • b. Arachnoid mater
   • c. Choroid plexus
   • d. Lumbar plexus
   • e. Pia mater

2. Analyzing Each Structure:

   • Dura Mater: This is the outermost layer of the meninges that surrounds the brain and spinal cord. Its main function is protective, not fluid production.
   • Arachnoid Mater: This is the middle layer of the meninges, which does not produce CSF but does play a role in its absorption and circulation.
   • Choroid Plexus: This is a network of cells in the ventricles of the brain that is primarily responsible for the production of cerebrospinal fluid.
   • Lumbar Plexus: This is a network of nerves in the lower back and has no role in CSF production.
   • Pia Mater: This is the innermost layer of the meninges that adheres closely to the brain and spinal cord; it does not produce CSF.

3. Conclusion: The only anatomical structure involved in the production of cerebrospinal fluid is the Choroid plexus.

Final Answer

c. Choroid plexus