How to Use "reptilian" with Example Sentences

1. He explained that that boy only had what was called a reptilian brain stem .
2. A reptilian brain stem is not capable of maintaining basic bodily functions such as breathing , heart or liver .
3. Reptiles might also experience rem , and some scientists argue that our mammalian dreaming might be a holdover from our reptilian brains .
4. The reptilian mind is usually equated in the human one with traits like aggression , dominance and sexual appetite .
5. However , the mammalian ( or emotional ) brain never disappears , and reptilian instincts come to the fore in a crisis .