Adjustment of respiratory muscle contractions to accommodate varying loads is regulated by which of the following?
a. Medullary respiratory centers
b. Muscle spindle fiber feedback
c. Pontine apneustic center
d. Pontine pneumotaxic center
ANS: B
Muscle spindles in the diaphragm and intercostal muscles are part of a reflex arc that helps the muscles adjust to an increased load.
Health Professions
You might also like to view...
Oral white patches that are of unknown cause, cannot be rubbed off, and cannot be clinically diagnosed as any other condition should be:
a. Ignored b. Treated symptomatically if painful c. Observed d. Biopsied e. None of the above
Health Professions
Extensive root planing is not necessary because
A) it takes too long. B) calculus is not deeply embedded in the root. C) it is not necessary to remove all deposits. D) deposits will be removed during surgery.
Health Professions