NBE-4210 first lecture

As a first course based on biology in the university it was really nice to notice how old knowledge from the high school courses arise while reading the first chapters of the book. The book seemed very professional and while the topics were familiar the material contained also deeper information on top of the old one while refreshing the old one.

Names of the cerebrum lobes were already forgotten and it was really good to see them again. New thing that I learned was the splitting of the spinal nerve into dorsal and ventral roots which were for incoming and outgoing sensory respectively. Also the issues in seeing the neurons before actual electron microscope was completely new information.

Memory refresh considering the cytoplasm was also very good and information about rough er and free ribosomes was new or completely lost since high school. It felt an important detail to remember that proteins from rough er are destined for cell membrane or organelles. It is important to remember that smooth er does not synthesize proteins but some folds them and regulate internal consentrations of the cell.

Information gained about the neurons and glia from the lectures was compressed nicely but it was hard to obtain what is the difference between oligodendroglial and schwann cells. This question was not directly answered by the book but somehow by the google.

Interesting side note picked from the book was the mutation of a potassium channel causing “Weaver” mice which have a hard time balancing themselves. I have some kind of experience in this since in our household there lives an albino pet mouse with long hair and she has this syndrome. She waves back and forth a little while standing still. The book told that this can cause untimely death of the animal but I hope this won’t be the case for out pet and she will still live a happy (but poorly balanced) life 🙁 .


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