PSY 102 Lecture Notes - Lecture 3: Myelin, Neuroglia, Axon Terminal

• School: Ryerson University
• Department: Psychology
• Course: PSY 102
• Professor: Will Huggon

Document Summary

They communicate in 2 different ways: chemical and electrical. Cell body: center of neuron and builds new cell components. Dendrites: branchlike extension that receive information from other neurons. A(cid:454)o(cid:374)s: (cid:862)tails(cid:863) of the (cid:374)euro(cid:374) that spread out fro(cid:373) the (cid:272)ell (cid:271)od(cid:455) a(cid:374)d tra(cid:374)sit i(cid:374)for(cid:373)atio(cid:374) Myelin sheath: insulator that holds everything in place. Axon terminal: end of the axon containing synaptic vesicles filled with neurotransmitters. Neurotransmitters: chemical messengers that allow neuron to neuron communication. Cell in nervous system that plays a role in the formation of myelin and the blood-brain barrier; responds to injury, removes debris, and enhances learning and memory. Memories stay in our brains, but the links to that memory fade away. Glial means glue, so it holds thing together. M(cid:455)eli(cid:374) sheath: glial (cid:272)ells (cid:449)rapped arou(cid:374)d a(cid:454)o(cid:374)s that a(cid:272)t as i(cid:374)sulators of the (cid:374)euro(cid:374)"s sig(cid:374)al. Neurons respond to the nts by generating electrical activity. Resting potential: when the neuron is not being stimulated or inhibited.