Adjustment of respiratory muscle contractions to accommodate ...

[saliriagwu]

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

Question 2

Which receptors are primarily responsible for the initial increase in ventilation that occurs at the beginning of exercise?
 
  a. Carotid chemoreceptors
  b. Irritant receptors
  c. J receptors
  d. Proprioceptors

[juliaf]

Answer to Question 1

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.

Answer to Question 2

ANS: D
Proprioceptors in joints and tendons may be important in initiating and maintaining increased ventilation at the beginning of exercise.

[saliriagwu]

Thanks for the timely response, appreciate it

[tkempin]

TYSM