PSY 1501 Lecture Notes - Lower Motor Neuron, Alpha Motor Neuron, Gamma Motor Neuron

• School: University of Ottawa
• Department: Psychology
• Course: PSY 1501
• Professor: Kenneth Campbell

Document Summary

The motor system consists of all our muscles and the neurons that control them. The spinal cord contains certain motor programs for the generation of coordinated movements and that these programs are accessed, executed, and modified by descending commands from the brain. The spinal cord"s command and control of coordinated muscle contraction. The brain"s command and control of the motor program in the spinal cord. The muscles in the body can be described according to two broad categories: Smooth: lines the digestive tract, arteries and related structures, plays a role in peristalsis and the control of blood pressure and blood flow. Striated there are two types of striated muscles: cardiac muscle is the heart muscle. Contracts rhythmically innervations of the heart from the ans functions to accelerate or slow down the heart rate: skeletal muscle. Constitutes the bulk of muscle mass in the body. Contains hundreds of muscle fibers, each innervated by a single axon.