NEUR 3200 Study Guide - Midterm Guide: Medium Frequency, Muscle Spindle, Golgi Tendon Organ

• School: Carleton University
• Department: Neuroscience
• Course: NEUR 3200
• Professor: John Stead

Document Summary

For the multiple choice exam for module 16, you should be able to: understand the difference between a motor neuron, a motor neuron pool, and a motor unit. Motor neuron: a nerve cell forming part of a pathway along which impulses pass from the brain or spinal cord to a muscle or gland. Motor neuron pool: a collection of neurons that collectively innervate one muscle. Cell bodies that innervate proximal muscles are located medially: medial spinal cord controls muscles of the trunk. Cell bodies that innervate distal muscles are located laterally: lateral spinal cord controls muscles located more laterally. Important for skilled behaviour: understand the different between and motor neurons. Innervate extrafusal muscle fibers: extrafusal: are the muscle fibers that are anything other than the muscle spindle in the muscle. Motor unit: is one alpha motor neuron and all of the muscle fibres that it innervates. Important for standing /posture: activated by low frequency stimuli.