Flight I: Structure & Function of Wings - Biology Courses Server

More documents

Recommendations

Info

Structure of wings• Cross section through the wing.Membrane is two layers ofintegument. Veins including nerve,blood space and tracheae. Wingsdo not contain muscle.• Venation. Irregular network ofveins found in primitive insects.Longitudinal veins with limitedcross-veins common in manypterygote groups. Extremereduction of all veins common insmall insects. Longitudinal veinsconcentrated and thickened towardthe anterior margin of the wing.This gives increased efficiency andsupport.
Structure of wings• Pterostigma. Darkened area onforewing in Hymenoptera,Pscoptera, Megaloptera andMecoptera and on both wings inOdonata. Functions as inertialmass in flight. Reduces wing flutterduring gliding in odonates, therebyincreasing flight efficiency.Provides passive control of angle ofattack in small insects, whichenhances efficiency during flappingflight.• Wing folding. Flexion lines reducepassive deformation and enhanceswing as an aerofoil. Fold lines usedin folding of wings over back.
Page 1: Flight I: Structure & Function of W
Page 5 and 6: Two general mechanisms of wingmovem
Page 7 and 8: Movement of the wings• Stoke plan
Page 9 and 10: • Relative wind is the movement o
Page 11: Control of flight

Flight I: Structure & Function of Wings - Biology Courses Server

Create successful ePaper yourself

Delete template?

Save as template?