PSY290H5 Lecture Notes - Lecture 2: Endoplasmic Reticulum, Neuroplasticity, Oligodendrocyte
Document Summary
Brain plasticity refers to the rearrangements of dendrites in the brain. Every cell has genes that it turns on, rough endoplasmic reticulum help create proteins which then dictate structure and how . Axons and dendrites receive and transmit information. Axons can vary in length (under 200um but can be 2 meters) can impact how neurons communicate especially how fast they communicate in length contain synaptic vesicles and these vesicles Dendrites have receptors (can change, be inserted or taken away, all these changes are from signals) Connection between a dendrite and an axon is called a synapse. Gilal cells (10-50x more in the brain than neurons) don"t convey action potential play a strong role in modifying existing signals, regulators of neuronal activities provide raw nutrients from to neurons . Schwan cells can mylenate not all axons have mylenation present. Two axons oligodendrocytes (fewer but cover more grounds than s. cells) and schwann cells.
