Cord and Nervous System 2026
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Spinal Cord - 🧠 ANSWER ✔✔Carries information to/from the brain and
processes reflexes.
Vertebrae - 🧠 ANSWER ✔✔Bones protecting the spinal cord.
CSF - 🧠 ANSWER ✔✔Cerebrospinal fluid cushioning the spinal cord.
, Meninges - 🧠 ANSWER ✔✔Three protective layers surrounding the spinal
cord.
Dura Mater - 🧠 ANSWER ✔✔Outermost and thickest meningeal layer.
Arachnoid Mater - 🧠 ANSWER ✔✔Middle meningeal layer, attached to
dura.
Sub-arachnoid Space - 🧠 ANSWER ✔✔CSF-filled space for lumbar
punctures.
Pia Mater - 🧠 ANSWER ✔✔Deepest meningeal layer on brain surface.
Conus Medularis - 🧠 ANSWER ✔✔Spinal cord termination around L1/L2.
Cauda Equina - 🧠 ANSWER ✔✔Bundle of nerves below conus medularis.
Filum Terminale - 🧠 ANSWER ✔✔Extension of pia mater to coccyx.
Grey Matter - 🧠 ANSWER ✔✔Contains nerve cell bodies in spinal cord.
White Matter - 🧠 ANSWER ✔✔Myelinated axons organized into tracts.
Anterior Horn - 🧠 ANSWER ✔✔Contains motor cell bodies in grey matter.
Posterior Horn - 🧠 ANSWER ✔✔Contains sensory nerve cell bodies.