Question

What are the
(i) gray matter, and........................................................................................
(ii) white matter made of? .............................................................................

Answer 1

Answer:

here is the answer mate

Explanation:

Grey matter is a major component of the central nervous system. It is made of large number of closely packed nerve cells that do not have a fatty sheath covering, because of which it appears grey in colour. In opposite to this, the part of the central nervous system that posses nerve cells with fatty sheath covering is called white matter.

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Answer 2

1. Gray matter is made of numerous cell bodies of the neurons and relatively few myelinated axons. As the cell bodies are without myelin sheath, they do not possess the white colour.

2. White matter is composed mainly of long-range myelinated axons. Its white colour of the white matter is attributed to the white-coloured myelin sheath that covers the long axons.  

• While white matter is located deep in the brain, gray matter is mostly found on the brain's surface, cortex.
• In the spinal cord, they are in opposite arrangement with grey matter inside and white matter outside.

Associated information can be learnt from the links below.

Explain the structure and working of human brain.

https://brainly.in/question/2622398

Explain the structure , function and location of nerve cell

https://brainly.in/question/3895129