The diagram given below is an external view of the human brain. Study the same and answer the questions that follow: The diagram given below is an external view of the human brain. Study the same and answer the questions that follow:
Mention the collective term for the membranes covering the brain.
Topic: Meninges
Answer
The MENINGES.
The three meninges, from OUTSIDE INWARDS: DURA MATER — tough and fibrous, next to the bone ARACHNOID MATER — the middle, web-like layer PIA MATER — thin and delicate, in direct contact with the nervous tissue
The names fix the order: DURA means TOUGH (appropriate next to the skull), PIA means TENDER (appropriate against the brain), ARACHNOID means spider-like, from its web-like structure.
They cover the SPINAL CORD as well as the brain. Their inflammation is MENINGITIS, a serious disease — a useful way to remember the collective name.