Question

Identify the fluid indicated by the statements given below and write any two of its functions.
• It fills the space between the inner layers of the meninges.
• Ependymal cells play a role in the formation of this fluid.

Hint:

Cerebrospinal fluid (CSF) cushions the brain and helps in nutrient transport and waste removal in the central nervous system.

Answer 1

Step 1: Understanding the given clues.
The fluid mentioned fills the space between the meninges (protective layers of the brain and spinal cord), and is formed with the help of ependymal cells.
Step 2: Identification of the fluid.
The fluid described is Cerebrospinal Fluid (CSF). It is present in the subarachnoid space between the meninges and is produced by specialized ependymal cells in the ventricles of the brain.
Step 3: Function 1 – Protection.
CSF acts as a shock absorber, protecting the brain and spinal cord from mechanical injuries by cushioning them.
Step 4: Function 2 – Transport and nourishment.
It helps in the transport of nutrients and removal of waste products from the central nervous system, maintaining a stable chemical environment.
Step 5: Conclusion.
Thus, cerebrospinal fluid is essential for protection, nourishment, and proper functioning of the brain and spinal cord.