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How Exactly Does The Brain Control Breathing?

Date:
May 13, 2005
Source:
Blackwell Publishing Ltd.
Summary:
An understanding of exactly how the brain controls breathing is fundamental to the treatment of respiratory disorders. We know that breathing is an automatic rhythmic process that persists without conscious effort whether we are awake or asleep, but the question that has intrigued many scientists for well over 100 years is what maintains this almost fail safe vital rhythm throughout life?

An understanding of exactly how the brain controls breathing is fundamental to the treatment of respiratory disorders. We know that breathing is an automatic rhythmic process that persists without conscious effort whether we are awake or asleep, but the question that has intrigued many scientists for well over 100 years is what maintains this almost fail safe vital rhythm throughout life?

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Experimental Physiology editor Julian Paton invited two world renowned scientists Dr. Guyenet from the University of Charlottesville and Dr. Richerson from Yale University, to use the journal as a forum to discuss the issue and attempt to resolve their differences in opinion.

Both authors agree that the respiratory rhythm requires specialised nerve cells (central chemoreceptors) to power the rhythm, but the issue highly debated by Guyenet and Richerson is the precise location and cell types involved. Guyenet proposes that these nerve cells are located in a ventral area of the brainstem (the retrofacial region) and loaded with a transmitter substance called glutamate. Their close proximity to the ventral surface of the brain allows them to sense and react to changes in the pH of the cerebrospinal fluid; this is deemed an essential property of a central chemoreceptor.

Richerson, on the other hand, stipulates that central chemoreceptors are found close to the midline blood vessels of the brainstem allowing them to 'taste' the pH of the blood. His cells do not contain glutamate but a substance called serotonin.



Story Source:

The above story is based on materials provided by Blackwell Publishing Ltd.. Note: Materials may be edited for content and length.


Cite This Page:

Blackwell Publishing Ltd.. "How Exactly Does The Brain Control Breathing?." ScienceDaily. ScienceDaily, 13 May 2005. <www.sciencedaily.com/releases/2005/05/050512203033.htm>.
Blackwell Publishing Ltd.. (2005, May 13). How Exactly Does The Brain Control Breathing?. ScienceDaily. Retrieved March 29, 2015 from www.sciencedaily.com/releases/2005/05/050512203033.htm
Blackwell Publishing Ltd.. "How Exactly Does The Brain Control Breathing?." ScienceDaily. www.sciencedaily.com/releases/2005/05/050512203033.htm (accessed March 29, 2015).

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