Card Set Information
What center in the medulla controls inspiration?
What center in the medulla controls expiration?
How many breathing centers are in the medulla?
How many breathing centers in the pons?
For the Medullary DRG, what are its chemoreceptors and mechanoreceptors?
Chemoreceptors (for O2):
CN IX, X
What nerve does the Medullary DRG utilize to set diaphragmatic breathing?
What is the function of the
and where is it located?
inhibit medullary DRG inspiration
When is the VRG active and why?
**b/c expiration is normally passive
What are the three nuclei in the VRG of the medulla? functions?
inspire/expire main muscles
inhibit DRG inspiration
What is the function of the Apneusis and where is it located?
prolong inspiration, activate DRG phrenic nerve. Causes quick expiration as well.
What is the function of the drug
What do Central Chemoreceptors monitor?
CSF Hydrogen levels, pH, PCO2
What are the two Peripheral Chemoreceptors?
Aortic and Carotid
What do Peripheral Chemoreceptors monitor?
PO2, PCO2, arterial pH
What is the difference b/t the aortic and carotid peripheral chemoreceptors?
Arterial pH only monitored by carotid receptors
What is the only mechanoreceptor to decrease breathing?
2) Joint & Muscle
4) Juxtacapillary (J)