I want to know the answer to the following question:
What are ganglia?
All the background I'm provided with is that "The brain generally forms a ring round the pharynx (throat), consisting of a pair of ganglia (local control centers) above and in front of the pharynx, linked by nerve cords either side of the pharynx to another pair of ganglia just below and behind it.". Is that enough to answer the question?
Answer: yes