extrapyramidal system

(noun)

A biological neural network that is part of the motor system that causes involuntary movements. 

Related Terms

  • motor system
  • corticospinal tract
  • cerebral cortex

Examples of extrapyramidal system in the following topics:

  • Organization of Motor Neuron Pathways

    • The motor system is the part of the central nervous system that is involved with movement.
    • The motor system is the part of the central nervous system that is involved with movement.
    • It consists of the pyramidal and extrapyramidal system.
    • Included in the diagram are the following motor pathways: corticospinal tracts (pyramidal tract), and extrapyramidal tracts (tectospinal tract not delineated).
  • Introduction to Systems of Equations

    • A system of equations consists of two or more equations with two or more variables, where any solution must satisfy all of the equations in the system at the same time.
    • To find the unique solution to a system of linear equations, we must find a numerical value for each variable in the system that will satisfy all of the system's equations at the same time.
    • A solution to the system above is given by
    • An inconsistent system has no solution.
    • A dependent system has infinitely many solutions.
  • Expert Systems

    • An expert system consists of both an inference engine and a knowledge base and has decision-making abilities.
    • An expert system has a unique structure, different from traditional computer programs.
    • Knowledge-based systems are systems based on the methods and techniques of artificial Intelligence.
    • Knowledge base systems (KBS) go beyond the decision support philosophy to incorporate expert system technology into the decision-making framework.
    • Break down expert systems to the inference engine, the knowledge base, and conversational
  • Comparing the Somatic and Autonomic Nervous Systems

    • The peripheral nervous system (PNS, see ) is divided into the somatic nervous system and the autonomic nervous system.
    • The somatic nervous system controls all voluntary muscular systems within the body, and also mediates involuntary reflex arcs.
    • The autonomic nervous system (ANS) is the part of the peripheral nervous system that acts as a control system, functioning largely below the level of consciousness and controlling visceral functions.
    • It is classically divided into two subsystems: the parasympathetic nervous system (PSNS) and sympathetic nervous system (SNS).
    • The enteric nervous system is sometimes considered part of the autonomic nervous system, and sometimes considered an independent system.
  • Plant Tissues and Organ Systems

  • The Continental System

  • The Factory System

  • The Systems Viewpoint

    • Systems thinking is an approach to problem solving that considers the overall system instead of focusing on specific parts of a system.
    • Systems thinking is the process of understanding how people and situations influence one another within a closed system.
    • In business, management also involves systems thinking.
    • Systems generally contain the following aspects:
    • Practitioners of systems thinking believe that the component parts of a system can best be understood, and best analyzed, in the context of their relationships with other parts of a system .
  • Introduction to the Nervous System

    • The basic unit of the nervous system is the neuron.
    • The nervous system can be divided into two major parts—the central nervous system (CNS) and the peripheral nervous system (PNS).
    • The peripheral nervous system includes a large system of nerves that are linked to the brain and spinal cord.
    • The PNS can be further subdivided into the autonomic nervous system and the somatic nervous system.
    • The nervous system of the human body, including the brain and spinal cord (central nervous system) and all the nerves of the body (peripheral nervous system).
  • Comparison of Enthalpy to Internal Energy

    • A thermodynamic system can be any physical system with a well-defined volume in space.
    • The outer edge of the system is referred to as its boundary, which often separates the system from the surroundings.
    • Hence, -q means the system loses heat, while +q means a system gains heat.
    • Similarly, +w means work is done on the system, while -w means work is done by the system.
    • However, in open systems, the pressure of the system and the surroundings has stayed constant.
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