Mechanism and regulation of respiration
Answers
Answer:
Regulation Of Respiration. Nervous Mechanism: It involves respiratory centres. Respiratory centres are present in medulla oblangata,which is responsible for collecting the sensory information related the level of oxygen as well as carbon dioxide present in the blood.
Regulation of Respiration:
• Human beings have an ability to maintain their respiratory rhythm to suit the demands of the body tissues.
• This is done by the neural system.
• A specialised centre present in the medulla region of the brain called respiratory rhythm centre is primarily responsible for this regulation.
• Another centre present in the pons region of the brain called pneumotaxic centre can moderate the functions of the respiratory rhythm centre.
• Neural signal from this centre can reduce the duration of inspiration and thereby alter the respiratory rate.
• A chemosensitive area is situated adjacent to the rhythm centre which is highly sensitive to CO2 and H ions. Increase in these substances can activate this centre, which in turn can signal the rhythm centre to make necessary adjustments in the respiratory process by which these substances can be eliminated.