BIOL 1080 Lecture Notes - Lecture 8: Reflex Arc, Multiple Sclerosis, Autoimmune Disease
Document Summary
Doesn"t have to go to brain to receive a response. Notes brain after (recognize pain: neuron: action potential, oligodendrocyte (cns) and schwann cells (pns, astrocyte, microglia, ependymal. Each nerve ending only releases one type of neurotransmitter. Built for speed: depending on myelin sheath (the more the faster) Unmyelinated multiple sclerosis, destruction of myelin sheath due to. Cell body response: depending on which is more (cid:523)stimulatory or inhibitory(cid:524) net. Teenage brain: increase of dopamine and myelination social network (cid:523)status and. Nerve can send out multiple shoots (diverging) Receiving multiple shoots (convergent) effect determines if action potential is generated or not acceptance) In cns: extends out and produce myelin coating (extensive) Pns: produce myelin where they are (local) Tight control over what gets through the brain (cid:523)neurons don"t regenerate(cid:524) Astrocyte surround capillary endothelial cells to promote tight junction. What gets through: small lipid soluble compounds, caffeine, alcohol, glucose transporter glu1 (not insulin sensitive - sits and move glucose at steady rate) formation.
