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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!!!
What else can I help you with?
What determines the respiratory rhythm in the body?
medullary respiratory centers
What exerts controls on the respiratory rhythm?
The respiratory rhythm is controlled by the respiratory center located in the brainstem, which receives input from chemoreceptors that sense levels of oxygen, carbon dioxide, and pH in the blood. Additionally, input from higher brain centers and stretch receptors in the lungs also affect the respiratory rhythm.
What are 3 characteristics of a respiratory surface?
The three characteristics of a respiratory rate are rate, depth, and rhythm.
A sinus rhythm originate in?
Sinus nodes (sa nodes)
Which part of the brain generates the basic respiratory rhythm?
medulla oblongata
Where in the medulla are the neurons that set the basic respiratory rhytm?
The answer is Ventral Respiratory Group or VRGIt contains the rhythm generators "whose output drives respiration".Hoehn, Marieb Human Anatomy & PhysiologyEighth Edition pg. 835
The respiratory centres that control the basic rhythm of breathing are located in the?
medulla and pons
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 is the basic rhythm of breathing is controlled by?
The basic rhythm of breathing is controlled by part of the brain called the Medulla.
What contains the autonomic center that regulate blood pressure and respiratory rhythm?
the medulla oblongata
What detemines the respiratory rhythm in the body?
The respiratory rhythm is primarily determined by the brainstem, specifically the medulla oblongata and pons, which contain respiratory centers that regulate the rate and depth of breathing. These centers respond to various stimuli, including carbon dioxide levels, oxygen levels, and blood pH, to adjust breathing patterns accordingly. Additionally, sensory inputs from the body, such as stretch receptors in the lungs and chemoreceptors in the blood, contribute to fine-tuning the respiratory rhythm to meet metabolic demands.
What are the centers and areas that generate the basic rhythm of the respiratory cycle?
Pons and Medula in the brain stem.
