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Related Concept Videos

Physiological Control of Respiration01:23

Physiological Control of Respiration

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...
Neural Control of Respiration01:18

Neural Control of Respiration

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...
Chemical Factors Affecting Respiration Centers01:31

Chemical Factors Affecting Respiration Centers

Chemical factors such as changing CO2, O2, and H+ levels in arterial blood play a critical role in influencing respiration depth and rates. These variations are detected by chemoreceptors—specialized sensors located in two primary body areas. Central chemoreceptors are found throughout the brain stem, including the ventrolateral medulla, while peripheral chemoreceptors are located in the aortic arch and carotid arteries.
CO2 has a potent influence on respiration and is strictly regulated. Under...
Physiology of Respiration II: Neurogenic Control of Respiration01:22

Physiology of Respiration II: Neurogenic Control of Respiration

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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Paradigms for Pharmacological Characterization of C. elegans Synaptic Transmission Mutants
18:01

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Published on: August 19, 2008

Genes modulating chemical breathing control: lessons from mutant animals.

Claude Gaultier1, Stéphane Dauger, Michel Simonneau

  • 1Laboratoire de Neurologie et Physiologie du Développement, INSERM E9935, Hôpital Robert-Debré, 48 Boulevard Sérurier, 75019 Paris, France. claude.gaultier@rdb.ap-hop-paris.fr

Respiratory Physiology & Neurobiology
|July 11, 2003
PubMed
Summary

Genetic mutations impact breathing control. Research on mutant mice and congenital central hypoventilation syndrome (CCHS) aims to identify genetic factors influencing respiratory regulation.

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Area of Science:

  • Genetics
  • Respiratory Physiology
  • Developmental Biology

Background:

  • Congenital central hypoventilation syndrome (CCHS) is a rare genetic disorder characterized by impaired chemical control of breathing, particularly during sleep.
  • Evidence suggests a genetic basis for CCHS, with mutations in genes related to neural crest cell development (endothelin and c-ret pathways) identified in some patients.

Purpose of the Study:

  • To investigate the role of genetic factors in breathing control using mouse models.
  • To explore the respiratory phenotypes of mutant mice to better understand the genetic underpinnings of CCHS.

Main Methods:

  • Plethysmography studies were conducted on newborn heterozygous mutant mice.
  • Analysis focused on genes involved in endothelin and c-ret pathways crucial for neural crest cell development.

Main Results:

  • Mutant mouse studies indicated that genes in the endothelin and c-ret pathways are involved in respiratory control at birth.
  • However, no single gene mutation in newborn mice fully replicated the human CCHS phenotype.

Conclusions:

  • Further research is needed to identify specific genetic causes of CCHS.
  • Future studies should examine additional gene pathways and utilize microarrays to identify gene clusters associated with abnormal breathing control in CCHS.