HSCI 100 Lecture Notes - Motor Neuron, Neuroglia, Action Potential

• School: Simon Fraser University
• Department: Health Sciences
• Course: HSCI 100
• Professor: Nienkevan Houten

Document Summary

Cells of the nervous system: nervous system allows for communication between cells through sensory input, integration of data and motor output. Neurons: made of dendrites, a cell body of an axon. > dendrites carry info toward the cell body. > axons carry info from a cell body. These are long extensions that carry nerve impulses. > take impulse from sensory receptor to cns. > conduct info toward the brain and spinal cord. > found only within the brain and spinal cord where htye integrate and interpret sensory signals. > receive info in the cns and send it to a motor neuron: motor. > takes impulses from the cns to an effector (gland or muscle fibre) > carry info away from the brain and spinal cord to an effector. Neuroglia: a collection of cells that support and nourish the neurons, outnumber neurons of a ratio of 9:1.