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Stack #16828
Control of Respiration
| Question | Answer |
|---|---|
| Actual or hypothetical respiratory control centers in the pons | Apneustic center, Pnemotaxic center |
| Respiratory control centers in the medulla | VRG(ventral resp group, DRG(dorsal resp group) |
| Respond to overinflation and underinflation of the lungs | Stretch receptors in the lungs |
| Respond to decreased oxygen levels in the blood | Chemoreceptors in the aortic arch and the carotid body |
| Also called the inspiratory center | dorsal resp group(DRG) |
| Medullary area that contains approximately even numbers of neurons involved in inspiration and expiration | ventral resp group(VRG) |
| The breathing "rhythm" center | dorsal resp group(DRG) |
| Basically acts to inhibit the dorsal respiratory group(DRG) | Pneumotaxic center |
| Why is it inadvisable to administer pure O2 to a patient who suffers from pulm dz and retains carbon dioxide? | Declining oxygen level provide the respiratory drive therefore pure oxygen would cause apnea |
| Arterial PO2 below 60mmHg stimulates hyperventilation primarily affects: | Peripheral chemoreceptors |
| Decrease in arterial pH stimulates hyperventilation primarily affects: | Peripheral chemoreceptors |
| Increase in PCO2 in the CSF causes increases in respiratory rate and depth primarily affects: | central chemoreceptors |