ABSTRACT
This chapter identifies the structures in a neuron. The nervous system allows parts of the body to communicate rapidly with other parts of the body to regulate responses to internal and external stimuli. Neurons with larger diameter axons also have increased conduction velocities compared to their smaller diameter counterparts. Unique aspect of an action potential is that it has an "all-or-none" property. Thus, when an action potential is generated, the amplitude is constant, regardless of the magnitude of stimulus at the motor neuron cell body. Optimal coordination of motor activity by the central nervous system depends on a constant supply of sensory feedback during the movement. Proprioception involves sensory feedback about movement and body position. The chapter differentiates the types of muscle fibers. It helps readers to understand the timing of sliding filament theory of muscle contraction, and explains the neural and muscular adaptations to resistance training.
