Lida, Fryday’s class overview September 14,2007 3/3

- We started the class out with a pop quiz about the nerve impulse and the synaps.
- We reviewed the concept about depolirazation, repolirazation, polirazation, excited transmit chemical, and inhibitory transmit chemicals.
- We took notes about the central nervous system, and labbled the parts of the brain.
- Second block we had a quiz about the nerve impulse and the synapse. You had to make sure you understand the difference between exitatory and inhibitory transmit chemicals.
- We watched a movie about the nerve impulse.
- Our homework is to read over the Laboratory of the Mammalian Brain.


The brain is really complicated and people still are not sure how the brain works. I think that it is funny that the technology is really advanced but people are still not sure how the brian works. The brain consist of two hemisphere the right (responsible for vision) and the left (responsible for verbal skills). The hemisphere consist of four different lobbes and they control different parts of your body. The four lobbes are frontal lobe, parietal lobe, temperoral lobe, and occitipital lobe. The brain is really complex and consits of many differnt part so it is not easy to label the brain because to me everything looks the same, and the names are really hard to remember. I did not know that the brain consist of grey and white matter and that only the white matte is able te fix damged neurons. I think that it is amazing how the brain controls everythings in our body. I can not believe that is the understanding of the brain is so complicated because the function of the brain is so common for us.

I wonder how morhphine effects the nerves in the body and the nerves in the brain. Morphine effects the receptors of the nerve cell membrane. There are three types of effectors mu, kappa and lambda. Morhpine mainly acts on mu receptors. Anaesthesia morphine has an effect on the actions of the spinal cord. Morphine decreases the transmission of painful stimuli to the brain. (information from http://www.nda.ox.ac.uk/wfsa/html/u03/u03_016.htm, http://www.narconon.ca/morphine.htm ) Morphine effects the brain’s reward system. Morphine is a too strongly activated brain reward and it alters the normal function of these sytems and cause an addiction.