ENT 100 Lecture Notes - Lecture 3: Ventral Nerve Cord, Suboesophageal Ganglion, Mushroom Bodies
Document Summary
Has all five senses, but sound is more rare. The brain is very simple compared to ours. Soft bodied insects squeeze muscles to propel themselves forward. Use gut like a piston, pushing it forward, use legs like an anchor. Attached directly to the wing, but only adjust the pitch. Deform thorax causing wings to move up and down. Wings are inflated using blood pressure and air. Wing veins consist of blood space, trachea, and nerve. Reproductive and digestive organs, where microbial assistance occurs. Crop - in foregut, acts as a grinder to process food before entering midgut. Foregut - transportation, food from mouth through thorax into midgut (esophagus and stomach) Hindgut - salts, minerals, water are removed (large intestine) Malpighian tubules - remove waste products from haemolymph (kidneys) Rectum - pads that reabsorb water and ions from gut. Fat body - globs of fat cells, usually in abdomen, used to detoxify (liver)
