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For most normal individuals the hypothalmus is is the origin of central chemoreceptors. These chemoreceptors are very sinsitive to elevation or drops in pH (or amount of free Hydrogen Ion in the blood). The equation: H + HCO2 = H2O + CO2

Shows how CO2 in the bloodstreem effects the amount of free H ion in the blood; in other word the more CO2 in the blood the more acidic it is and has a lower pH. The lower the pH of the blood is the more stimulation is given to the central chemoreceptors in the hypothalmus thus stimulating the phrenic nerve among others to raise the respiratory rate and blow off the excess CO2.

This process is very different for individuals who are suffering from chronic CO2 retention (Like in COPD). These indeviduals can not use the central chemoreceptors due to the excessive CO2 in the blood is a norm for them! These individuals must now depend on their peripheral chemoreceptor located through out their body. These peripheral chemoreceptors are sensitive to O2 levels in the blood, and are sitmulated by a drop in O2 concentration. This is why it could be dangerous to give excessive supplimental oxygen to a person with COPD. If there is no drop in O2 levels (because your giving them O2) in their blood what stimulates them to breath? Nothing !!!!! Scary huh? Dont smoke!!!

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โˆ™ 2007-10-09 22:48:26
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Q: Where does respiratory rhythm originate?
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Site of respiratory rhythm and breathing in the brain?

The brainstem is the respiratory rhythm generator. It is involved in involuntary breathing. Within the brainstem, the ventral respiratory group and the dorsal respiratory group are responsible for generating breathing rhythm and the pontine respiratory group regulates the pattern of that rhythm.


Which area of brain is most important in setting the basic respiratory rate and rhythm?

The respiratory center of the medulla is responsible for dictating the respiratory rate and rhythm.


What determines the respiratory rhythm in the body?

medullary respiratory centers


What in the brain controls respiratory rhythm?

The part of the brain that controls respiratory rhythm (and other involuntary actions) is known as the medulla oblongata.


What are 3 characteristics of a respiratory surface?

The three characteristics of a respiratory rate are rate, depth, and rhythm.


Where are the neural control centers of respiratory rhythm?

the medulla and pons


The basic rhythm of respiration is controlled by the?

The rhythm of respiration is controlled by the brain. The specific area of the brain is called the respiratory center.


Which part of the brain generates the basic respiratory rhythm?

medulla oblongata


What happens to the respiratory rhythm following hyperventilation?

Hyperventilation occurs when the respiratory system is not functioning properly. Hyperventilation is when the breathing rhythm is not proper, shorter breathes, and too much carbon dioxide becomes present.


Where are the neutral control centers of respiratory rhythm?

Respiration is controlled by the brain stem. The rhythm itself is controlled by an area called the pons.


The respiratory centres that control the basic rhythm of breathing are located in the?

medulla and pons


What part of the brain regulates respiratory rhythm?

The Apneustic center of the Pons Varoli


Where in the medulla are the neurons that set the basic respiratory rhythm?

The answer is Ventral Respiratory Group or VRGIt contains the rhythm generators "whose output drives respiration".Hoehn, Marieb Human Anatomy & PhysiologyEighth Edition pg. 835


How do you calculate respiratory rate from an ekg?

An EKG or ECG (electrocardiogram), calculates heart heart and rhythm. This diagnostic procedure is not associated with a respiratory rate.


The respiratory areas are widely scattered throughtout the pons and of the brainstem?

The- respiratory group within the madulla oblongata regulates the basic rhythm of breathing.


What contains the autonomic center that regulate blood pressure and respiratory rhythm?

the medulla oblongata


What part of brain regulates blood pressure heart rate and respiratory rhythm?

The Medulla Oblongata


What are the centers and areas that generate the basic rhythm of the respiratory cycle?

Pons and Medula in the brain stem.


What contains reflex centers involved in regulating respiratory rhythm in conjunction with lower brainstem centers?

The Pons.


What contains reflex centers involved in regulation respiratory rhythm in conjunction with lower brain stem centers?

The Pons


Contain autonomic centers which regulate blood pressure and respiratory rhythm as well as coughing and sneezing?

Medula Oblongata


What contains autonomic nerve centers which regulate blood pressure and respiratory rhythm as well as coughing and sneezing centers?

The medulla oblongata, the lower part of the brain stem is responsible for controlling, among many other things, heart rate, blood pressure, respiratory rhythm, coughing, and sneezing.


Where the neural control centers of respiratory rhythm?

there is a specific group of cells found in the medula (part of the brain stem) which regulate the rhythm of breathing, hence the name (of this cellular formation) the Medulary Rhythmicity Center.


Contains autonomic centers which regulate blood pressure and respiratory rhythm as well as coughing and sneezing centers?

medulla oblangata .....:>


What is the short term effect of exercise in the respiratory system?

The corticol motor will activate stimulating the pontine centers to modify VRG breathing rhythm. The VRG will make adjustments to the stimulus going to the respiratory centers