Crossword Genius

Neural centre developed in tribesman (9)

Ross

I believe the answer is:

brainstem

I'm a little stuck... Click here to teach me more about this clue!

'neural centre' is the definition.
The answer and definition can be both body parts as well as being singular nouns.
Perhaps they are linked in a way I don't understand?

'developed in tribesman' is the wordplay.
'tribesman' anagrams to 'BRAINSTEM'.
Though, I am unsure how the anagram is indicated.

Can you help me to learn more?

I've seen this clue in The Guardian.
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