PSYC 211 Lecture Notes - Lecture 5: Myelin, Peripheral Nervous System, Saltatory Conduction
6 Nov 2018
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Document Summary
Most of the cells in the nervous system is supporting cells. Cell membrane enlarges (fat tissue) that wraps many times around the axon. Only part of the axon that is exposed. When a ton a na+ enter, it pushes the other ions down the line. Structures on opposite side of the body hemispheres. In the body is called blood plasma and lymph. May trigger a flight or fight response hippocampus. There"s two, one on each side of brain. First synapse happens here and then sends information to the associating lobe. Release information to trigger fight or flight response from the sensory information in the limbic system. Before going to the temporal and occipital lobe. Involved in sleep, arousal, attention, movement and reflexes. Helps make movements smooth, so you won"t fall over. Damaged results in jerky, poor coordinated, exaggerated movements. Extensive damage can make it impossible to stand. Plays an important role in sleep and arousal.
