A nurse is explaining activation of beta2 receptors to some ...

[ghost!]

A nurse is explaining activation of beta2 receptors to some student nurses during a clinical rotation at the hospital. Which statement by a student demonstrates a need for further teaching?
 
  a. Beta2 activation results in bronchodilation.
  b. Beta2 activation results in contraction of uterine muscle.
  c. Beta2 activation results in glycogenolysis.
  d. Beta2 activation results in vasodilation of skeletal muscles.

Question 2

A pregnant patient is in premature labor. Which class of drug will she be given?
 
  a. Alpha1 agonist
  b. Anticholinergic
  c. Beta2 agonist
  d. Beta2 antagonist

[verrinzo]

Answer to Question 1

ANS: B
Beta2 activation would result in relaxation of uterine smooth muscle, not contraction; this statement indicates a need for further teaching. Bronchodilation is an effect of beta2 activation; no further teaching is needed. Beta2 activation does result in glycogenolysis; no further teaching is needed. Beta2 activation does result in vasodilation of skeletal muscle; no further teaching is needed.

Answer to Question 2

ANS: C
Beta2 agonists cause relaxation of uterine muscle, slowing or stopping the contractions that precipitate labor. An alpha1 agonist would have effects on the heart and arterioles. Anticholinergic drugs generally are given for their effects on the urinary and GI tracts and do not affect uterine muscle. A beta2 antagonist would cause increased constriction of uterine muscle.