Ch 23 ventilation reg worksheet sp19 PDF

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Regulation of Ventilation Introduction

1. a. Movement of air into and out of the lungs defines _______________. Air moving into the lungs is termed ________________; air moving out of the lungs is termed ____________________. b. Ventilation is regulated by the ____________ __________ ____________.

___________ located in this part of the brain:

Basic Rhythm and Regulation of ventilation 2. The two respiratory groups located in the medulla are the ___________ __________ __________ and the ____________ ___________ ____________. 3. Inhalation is initiated by the ____________ respiratory group; the ___________ respiratory group can modify the respiratory pattern. 4. The ____________________ respiratory group, located in the pons, receives input from higher brain regions and can modify activity of the DRG and VRG. 5. a.

The DRG (inspiratory area) stimulates contraction of the _______________ and external ___________.

b. The nerve which innervates the diaphragm is the _____________ nerve. c. When the inspiratory muscles contract, air __________ the lungs because pressure in the lungs is ________________ than atmospheric pressure. 6. During exhalation, air __________________ the lungs because lung pressure is _______________ than atmospheric pressure.

Effects of Blood Chemistry on Ventilation 7. Name the type of receptor which monitors blood and CSF chemistry: ____________________ 8.

Chemoreceptors are located in the ____________ bodies, _______________ bodies, and medulla.

9. a.

Elevated CO2 and H+ cause respiratory rate and volume to _____________________.

b. Falling CO2 and H+ cause respiratory rate and volume to _____________________________. c. Can hyper and hypoventilation regulate blood pH? _________ d. Define hyperventilation . e. Hyperventilation causes blood pH to ______________. f. Define hypoventilation. g. Hypoventilation causes blood pH to ____________....