支配三角肌的神经是（ ）。

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SQL Error: select id,body,options from ***_enewstiku where sourceid='31197' and id < 2506837 and id<>'2506837' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='31197' and id > 2506837 and id<>'2506837' order by id asc limit 5