The beating of the cilia of the respiratory passages in the ...

[saliriagwu]

The beating of the cilia of the respiratory passages in the direction of the pharynx forms a(n)
 A) debris filter.
  B) mucus escalator.
  C) respiratory rhythmicity center.
  D) smooth slick surface allowing particles to slide.
  E) increased surface area for gas exchange.

Question 2

An inhaler used to treat airway constriction in asthma or allergy might contain a drug that
 A) activates 1 adrenergic receptors.
  B) activates 2 adrenergic receptors.
  C) activates muscarinic cholinergic receptors.
  D) blocks 2 adrenergic receptors.
  E) activates 2 adrenergic receptors or activates muscarinic cholinergic receptors.

[jaygar71]

Answer to Question 1

B

Answer to Question 2

B

[saliriagwu]

Thank you!

[jaygar71]

Always glad to help...