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Related Concept Videos

Physiology of Respiration II: Neurogenic Control of Respiration01:22

Physiology of Respiration II: Neurogenic Control of Respiration

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The neurogenic control of respiration coordinates various neural networks and pathways to regulate breathing rate and depth, meeting the body's oxygen and carbon dioxide exchange requirements. This system adapts to physiological and environmental conditions, ensuring optimal breathing patterns.
Central Control
The brainstem is the primary site of central control, hosting respiratory centers:
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Neural Control of Respiration01:18

Neural Control of Respiration

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The neural regulation of respiration is a meticulously coordinated process primarily controlled by the respiratory centers located within the brainstem. These centers, composed of specialized neurons, transmit nerve impulses that control the contraction and relaxation of our respiratory muscles.
Respiratory Centers in the Brainstem
Two primary areas comprise the respiratory center: the medullary respiratory center in the medulla oblongata and the pontine respiratory group in the pons. The...
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Brainstem: Control Centers of Medulla01:21

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The medulla oblongata is a crucial part of the brainstem responsible for controlling various autonomic and involuntary functions. It contains several nuclei, including the olivary, cuneate, gracile, and solitary nuclei.
Olivary Nucleus
The olivary nucleus, or inferior olivary nucleus, is located within the ventrolateral part of the medulla oblongata. It is primarily involved in motor coordination and motor learning. The olivary nucleus receives input from the spinal cord, cerebellum, and motor...
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Physiological Control of Respiration01:23

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Introduction
Breathing, a seemingly passive process, is regulated by the respiratory center in the brainstem. This center coordinates the involuntary control of respirations, which means it occurs without conscious effort, ensuring a smooth and uninterrupted pattern.
Regulation of Ventilation
The body maintains ventilation by monitoring levels of carbon dioxide (CO2), oxygen (O2), and hydrogen ion concentration (pH) in the arterial blood. Among these factors, the level of CO2 plays a crucial...
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Other Factors Affecting Respiration Centers01:17

Other Factors Affecting Respiration Centers

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Breathing is primarily an involuntary activity regulated by the brainstem respiratory centers. However, it can also be consciously controlled, allowing us to hold our breath or take deeper breaths when needed. This voluntary control is facilitated by the cerebral motor cortex, which bypasses the medullary centers to stimulate the respiratory muscles directly.
However, the ability to hold one's breath voluntarily is not limitless. When the CO2 concentration in the blood reaches a critical...
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Brainstem01:19

Brainstem

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The brainstem, located inferior to the brain and superior to the spinal cord, serves as a bridge between the cerebrum and the spinal cord. It plays a vital role in relaying information and controlling critical life functions. It comprises three primary regions: the midbrain, pons, and medulla oblongata.
The Midbrain
The midbrain is located beneath the diencephalon and connects the cerebrum with the lower parts of the brain. The cerebral peduncles are prominent midbrain structures that house the...
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Related Experiment Video

Updated: May 30, 2025

Electrophysiology on Isolated Brainstem-spinal Cord Preparations from Newborn Rodents Allows Neural Respiratory Network Output Recording
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The multifunctionality of the brainstem breathing control circuit.

Kevin Yackle1, Jeehaeh Do2

  • 1Department of Physiology, University of California-San Francisco, San Francisco, CA 94143, USA; Kavli Institute for Fundamental Neuroscience, University of California, San Francisco, CA, USA; Cardiovascular Research Institute, University of California, San Francisco, CA, USA.

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Breathing control involves brainstem circuits. Recent molecular and genetic studies reveal how breathing integrates with complex behaviors and physiological states, advancing our understanding of neural subtypes.

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Area of Science:

  • Neuroscience
  • Physiology
  • Respiratory Control

Background:

  • The brainstem houses neural networks essential for subconscious breathing.
  • Decades of research have established fundamental properties and computational models of the breathing control circuit.
  • A considerable understanding of the brainstem's role in breathing exists.

Purpose of the Study:

  • To review the basic functions of key brainstem breathing control components.
  • To highlight recent discoveries in neural subtypes within breathing control nodes.
  • To explain how breathing integrates with complex behaviors and physiological systems.

Main Methods:

  • Review of anatomical, pharmacological, and physiological studies.
  • Analysis of computational models of breathing.
  • Integration of recent molecular and genetic findings on neural subtypes.

Main Results:

  • Established understanding of the brainstem breathing control circuit's fundamental properties.
  • New insights into how neural subtypes modulate breathing.
  • Demonstration of breathing's integration with behaviors (e.g., speech, locomotion) and physiological states.

Conclusions:

  • Molecular and genetic approaches have revolutionized breathing control research.
  • Understanding extends beyond basic respiration to complex behavioral and physiological integration.
  • The field shows creativity and promises an exciting future in understanding brainstem breathing control.