PSYB65H3 Chapter Notes - Chapter 3: Sensory Neuron, Motor Neuron, Dendrite

• School: UTSC
• Department: Psychology
• Course: PSYB65H3
• Professor: Zachariah Campbell

Document Summary

Cell body (soma): core region of the cell containing the nucleus and other organelles for making proteins. Dendrite: branching extension of a neuron"s cell membrane that greatly increases the surface area of the cell and collects information from other cells. Axon: root or single fiber, of a neuron that carries messages to other neurons. Dendritic spine: protrusion from a dendrite that greatly increases the dendrite"s surface area and is the usual point of dendritic contact with the axons of other cells. Axon hillock: juncture of soma and axon where the action potential begins. Terminal button (end foot): knob at the tip of an axon that conveys information to other neurons. Synapse: junction between one neuron and another that forms the information-transfer site between neurons. Sensory neuron: neuron that carries incoming information from sensory receptors into the spinal cord and brain.