Adverse peripheral effects, such as loss of accommodation, dry mouth, tachycardia, urinary retention, constipation are related to:

 Adverse peripheral effects, such as loss of accommodation, dry mouth, tachycardia, urinary retention, constipation are related to:

a) Alpha adrenoreceptor blockade

b) Muscarinic cholinoreceptor blockade

c) Supersesitivity of the dopamine receptor

d) Dopamine receptor blockade