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High LDL levels and low HDL levels lower the risk of heart disease.
Meninges
The three layers of protective membranes—dura mater, arachnoid mater, and pia mater—surrounding the brain and spinal cord.
Myelin Sheaths
Fatty coverings around the axons of some neurons that speed up the transmission of nerve impulses.
Ventricles
Hollow parts or cavities within an organ, in the context of the brain, these are cavities filled with cerebrospinal fluid.
Glia
Non-neuronal cells in the central nervous system that do not produce electrical impulses but play crucial roles in support and maintenance of neural functions.
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