PSY290H5 Lecture 3: Lecture 3 Notes
Document Summary
The neuron: basic unit of the nervous system. Three main functions: reception, conduction, transmission, cell body (soma) contains nucleus and other organelles, dendrites: branches that serve as locations at which information from other. Structural features of neurons neurons is received; small branches of that are spines. These spines are much more mobile than any other part of the neuron. Most likely to change as a result of an experience: axons are responsible for carrying neural messages to other neurons. Glial cells assist neuronal activity by providing raw materials, chemical signals, and. A microelectrode inserted into a resting cell shows that it is more negative than the extracellular fluid of a cell. At this charge the neuron is said to be polarized. More na+ outside the cell and more k+ inside; the unequal distributions are maintained even though there are specialized pores called ion channels.
