What protects the brain as a whole by providing an internal cushion

Question

Quizplus · Accepted Answer

Ventricles filled with CSF provide a cushioning effect for the brain as a whole, helping to protect it from impact and injury. The meninges (A) are a series of three layers of tissue that cover the brain and spinal cord, helping to protect them from physical damage. Myelin sheaths (C) are a fatty insulation that surrounds nerve fibers, helping to speed up their transmission of signals. Synaptic vesicles (D) are tiny sacs within nerve cells that contain neurotransmitters, which are released to allow communication between neurons. While each of these structures plays an important role in brain function and protection, only the ventricles filled with CSF (B) provide a cushioning effect that directly protects the brain as a whole.

What Protects the Brain as a Whole by Providing an Internal