The brain stem is an interesting subject as we often take its ability for granted. Out of all the things that the body can do, the most important things are those that we are most unaware. Think about breathing. How often do you stop and focus on your breathing? If you are living in this current world of always being on the go, the chances are that you go day to day without ever truly realizing that you are breathing. It just happens.
What about heart rate control? Yes, some of it is determined via catecholamines (fancy chemicals) and the sinoatrial node (natural pacemaker of the heart), along with the help of the parasympathetic and sympathetic nervous systems. But the brain stem is involved!
What about the sleep/wake cycle, auditory and visual reflex response, body temperature control and overall consciousness? Yes, the brain stem is in play with all these functions. It is so vital that injury to this area has serious consequences and is often fatal!
Informally and based upon what you now understand about the brain and cranial nerves, think about the following questions posed. Discuss and, most importantly, debate the “why” of one question that interests you most.
As this is a discussion, the goal is to debate freely with your peers and to have the opportunity to explore and analyze, not only your chosen question, but also the thoughts of your classmates. You might find that you end on a topic below that is far removed from your original choice. That is ok and encouraged!