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Related Experiment Videos

Basic principles of control of breathing.

Stephen Corne1, Zoheir Bshouty

  • 1Division of Pulmonary Medicine, University of Manitoba, Sleep laboratory, Health Sciences Centre, Winnipeg, Manitoba, Canada.

Respiratory Care Clinics of North America
|June 7, 2005
PubMed
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Breathing control is a complex system that adjusts ventilation to meet metabolic needs. This feedback loop involves sensors, a central controller in the medulla, and respiratory muscles, integrating automatic and volitional breathing.

Area of Science:

  • Physiology
  • Neuroscience
  • Respiratory System

Background:

  • Metabolic demands, such as oxygen consumption and carbon dioxide removal, fluctuate significantly in both healthy and diseased states.
  • Ventilation, the process of breathing, must dynamically adapt to meet these changing metabolic requirements and volitional activities.
  • The control of breathing is a sophisticated feedback system integrating automatic and voluntary aspects.

Purpose of the Study:

  • To elucidate the intricate feedback control system governing ventilation.
  • To describe the integration of automatic and volitional breathing control mechanisms.
  • To highlight the roles of various sensors and central controllers in regulating gas exchange.

Main Methods:

  • Review of physiological feedback mechanisms in respiratory control.

Related Experiment Videos

  • Analysis of sensor input (chemoreceptors, lung volume receptors) to the central controller.
  • Examination of central integration in the medulla and efferent pathways to respiratory muscles.
  • Inclusion of suprapontine influences, such as cerebral cortex input, on volitional breathing.

    • Main Results:

    • Breathing control relies on a complex feedback system adjusting ventilation to metabolic demands.
    • Sensors relay information to a central controller in the medulla, which modulates respiratory motoneurons and muscles.
    • Volitional control of breathing is integrated via inputs from suprapontine structures, including the cerebral cortex.

    Conclusions:

    • The respiratory control system is a sophisticated network essential for maintaining homeostasis.
    • Integration of sensory feedback and central processing ensures appropriate ventilation for metabolic needs and behavior.
    • Understanding this system is crucial for addressing respiratory disorders and volitional breathing impairments.