PSY290H1 Chapter Notes - Chapter 3: Myelin, Dorsal Root Of Spinal Nerve, Spinal Cord
Document Summary
Specialised for reception, conduction, and transmission of electrical signals. Connected system of membranes that packages molecules in vesicles. Transfer a signal to the inside of the neuron according to which molecules bind to them on the outside. Has more than two processes extending from its cell body. Has one process extending from its body. Has two processes extending from its body. Neurons with short or no axon body whose function is to integrate neural activity within a single brain structure, not to conduct signals from one structure to another. Ogliodendrocytes glial cells with extensions that wrap around axons of some neurons in the. Schwann cells are like ogliodendrocytes but in the pns. Constitutes many myelin segments, often with more than one axon. Unlike ogliodendrocytes, these can guide axonal regeneration after damage (regrowth). This is why effective regeneration in mammals is restricted to the pns. Respond to injury or disease by multiplying, engulfing cellular debris, and triggering inflammatory responses.