regulation of respiration Flashcards
what is eupnea
normal respiratory rate and rhythm
what is apneustic breathing?
prolonged inspiration (gasping for breath)
what is apnea?
cessation of breathing
what is hyperpnea?
increase in ventilation
what sets the basic rhythm of breathing?
the dorsal respiratory group
what does the pneumotaxic center do?
signals dorsal respiratory group at a set point to “turn off”, limits inspiration
when the pneumotaxic center inhibits the DRG, what happens to RR?
a strong pneumotaxic signal limits ramp time and leads to an increase in RR
what is the purpose of the ventral respiratory center?
overdrive for breathing, can increase ventilation through the extra recruitment of inspiratory and expiratory muscles
what is the purpose of the stretch receptors in the lung?
send signals to DRG when lungs are overstretched to turn off ramp, increase RR
what is the purpose of the hering-breuer reflex?
it ensures that lungs dont get overfilled with air
central chemoreceptors respond to what?
PCO2
peripheral chemoreceptors respond to what?
PO2
what type of acute and chronic effect does CO2 have on respiratory drive?
very strong acute but weak chronic after a few days adaptation
what direct effect does oxygen have on the respiratory center?
NONE, no direct effect on respiratory centers
what is anticipatory stimulation?
the brain can stimulate respiratory center in brainstem when sending motor impulses to muscles. After about 30 seconds the muscles release CO2 with matches ventilation rate
