Amygdala is a part in the brain, what does it mean in the Greek language?

I know it controls the "fight or flight" response.

RushMama2112, The "reptile brain" is the brain stem, the oldest part of the brain. This area controls heartbeat, respiration (imagine if we had to remember to breathe), blood pressure, and other functions of life.

Isn't it what's sometimes called the "lizard brain?"