Respiratory Control Flashcards
what is the role of the pre-botzinger group?
generate the “core” rhythm
what is the role of the pontine respiratory group?
modifies inspiratory timing (turns off inspiration)
what is the role of the dorsal respiratory group?
control depth of breathing (tidal volume)
what is the role of the ventral respiratory group?
controls inspiration and expiration; depth
what is the specific role of the rostral ventral respiratory group?
premotor to the phrenic nerve and other inspiratory muscles
what is the specific role of the caudal ventral respiratory group?
premotor to upper airway and other muscles of expiration
what is apneusis?
maintained inspiratory discharge
what causes apneusis?
pontine damage
what is apnea?
absence of respiratory effort- no inspiration
where are the central chemoreceptors found?
ventral surface of the medulla
where are the peripheral chemoreceptors found?
carotid body and aortic arch
what are the central chemoreceptors sensitive to?
PaCO2
what are the peripheral chemoreceptors sensitive to?
PaCO2, PaO2, and pHa
what type of mechanoreceptors do we have?
slowly adapting pulmonary stretch receptors, rapidly adapting stretch receptors, and J receptors
where are the slowly adapting pulmonary stretch receptors located?
in the airway
where are the rapidly adapting pulmonary stretch receptors located?
in the airway
where are the j receptors located?
in the alveoli
what is the stimulation of the rapidly adapting pulmonary stretch receptors?
irritation
what is the stimulation for the j receptors?
pulmonary edema
what is the effect of the slowly adapting pulmonary stretch receptors being stimulated?
stop inspiration, increase expiration
what is the effect of the rapidly adapting pulmonary stretch receptors being stimulated?
cough
what is the effect of the j receptors being stimulated?
tachypnea/ dry cough
