|< Back to Insect Structure and Function||
Ommatidium Refracting Light
|Next Drawing >|
Each ommatidium consists of a lens system formed partly from a thickening of the transparent cuticle and partly from a special crystalline cone. This lens system concentrates light from within a cone of 20°, on to a transparent rod, the rhabdom. The light, passing down this rhabdom, stimulates the eight or so retinal cells grouped round it to fire nervous impulses to the brain.
© Copyright D G Mackean
|Search this site|
|Search the web|
© Copyright 2004 - 2013 D G Mackean & Ian Mackean. All rights reserved.