Exam 9: Control of Ventilation

In which age group is the Hering-Breuer reflex most significant?

In which portion of the brain controls the rhythmicity of respiration?

What is the secondary stimulus of the peripheral chemoreceptors?

What separates the blood from the CSF in the medulla?

In which of the following conditions would PaO₂ be normal but CaO₂ would be reduced? I.Chronic anemia II.CO poisoning III.Methemoglobinemia

Which portion of the brain receives inhibitory signals from the Hering Breuer reflex?

What effect does foreign matter in the trachea have on ventilation in a healthy adult?

Which portion of the brain smooths the transition bewteen inspiration and expiration?

What effect does tactile stimulation of the larynx have on breathing?

What effect will supression of the VRG by overdose of alcohol or morphine have on ventilation?

Which of the following can stimulate the J-receptors? I.Alveolar inflammation II.Pulmonary capillary edema III.Pulmonary emboli IV.Hypercapnia

What is the term for the C-fibers located near the alveolar capillaries?

Which nerve transmits afferent signals from the carotid body to the medulla?

Which of the following may occur when the lungs are exposed to noxious gases and the irritant reflex is activated? I.Ventilatory rate increases II.Reflex cough III.Sneeze IV.Bronchospasm

Which portion of the brain coordinates the rate,depth,and rhythm?

When a patient has a low PaO₂ with a chronically high PaCO₂,how is ventilation exclusively controlled?

Which respiratory reflex or center is triggered by strong emotions?

What is the most powerful stimulus of the medullary respiratory centers?

If a low-land resident ascends to a high mountain altitude,which of the following would be stimulated first?

Which nerve emerges from the spinal cord between C3 and C5?