Best Answer: 1. Dilator pupillae-dilator (radial) muscle-innervated by sympathetic nervous system (Alpha-1 receptors)- increases the size of pupil (mydriasis) 2. Constrictor (circular muscle) pupillae-constricts the pupil (miosis) ex during accommodation reflex. just now. Report Abuse. Radial muscles and circular muscles. When the radial muscles contract the size of the pupil is increased. When the circular muscles contract the size of the pupil is decreased. Changing the size of the pupil controls the amount of light entering the eye.
Thinning is a term used in agricultural sciences to mean the removal of some plants, or parts of plants, to make room for the growth of others.
to bring into a certain state, condition, etc: to reduce a forest to ashes, to reduce someone to despair 3. (also intransitive) to make or become slimmer; lose or cause to lose excess weight