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.
forestry - the science of planting and caring for forests and the management of growing timber. undercut - a notch cut in the trunk of tree in order to determine the direction of its fall. biological science, biology - the science that studies living organisms. silviculture - the branch of forestry dealing with the development and care of forests. stool - (forestry) the stump of a tree that has been felled or headed for the production of saplings.