The thin, one-cell-thick membrane that lines the ventricles and central canal of the brain and spinal cord, producing cerebrospinal fluid.
From Greek 'ependyma' (ependýein 'to clothe upon'), where 'epi-' means 'upon' and 'endyein' means 'to clothe.' The term literally describes a garment worn over something.
The ependyme is like your brain's personal housekeeping crew—these cells produce fresh cerebrospinal fluid continuously, keeping your brain bathed in nutrients and removing waste products!
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