It is hard to wrap my head around the fact that amino acids can also be neurotransmitters. For so many years amino acids have only ever been discussed in the context of protein synthesis, so thinking about their other functions is bizarre. It also makes me wonder, why are so few amino acids neurotransmitters, and why those specific ones? Or is there more the book did not mention?
The same confusion applies to hormones that are also neurotransmitters. When are they hormones and when are they neurotransmitters? Are they still synthesised in the same place? The book discusses the example of noradrenaline. Before this, I did not know that nuclei in the brain also synthesised noradrenaline, I thought only adrenal glands were responsible for their synthesis.
Having or making a long list of common neurotransmitters, their place of synthesis and alternative functions would be useful. The classification by the book also seemed very broad. Though I am not sure how I would prefer to classify neurotransmitters.
When working on the brain structure homework, I started wondering how specifically should we know the structures in the brain? The structures always remain in the same place, but when looking at them from a different perspective, it can be challenging to identify certain areas. The parts can look so different from a different angle. And when looking at a real brain, the tissue all looks similar, no purple or blue areas to identify a specific structure.