Ventricles
pinocytosis is the part of the brain that transports large molecules. Vesicle means large hollow spaces that are filled by cerebrospinalfluid.
The ventricles are the fluid-filled cavities of the brain.
Spiders.
your brain since your lungs are filled with air
maybe
The ventricles are fluid filled cavities of the brain.
ventricles
the middle
spinal cord or brain are not solid because they have the system of canals which filled with fluid.
The fluid filled spaces in the brain are called ventricles. The fluid is called cerebrospinal fluid
These are called ventricles.
The empty half will fill with cerebral spinal fluid.