11. As a result, the circulatory fluid is commonly referred to as haemolymph , rather than blood. 12. However, the haemolymph does contain amoebocytes, which may have a role in the immune system. 13. The aorta, which supplies haemolymph to the cephalothorax, extends from the anterior end of the heart. 14. These extract the waste products from the haemolymph , in which all the internal organs are bathed ). 15. Movement of haemolymph is particularly important for thermoregulation in orders such as Odonata, Lepidoptera, Hymenoptera and Diptera. 16. The bee organ is cone shaped branching out from its nerve and almost obstructs haemolymph flow through the limb. 17. In other species with more flexible duct walls, changes in pressure of the surrounding haemolymph may be involved. 18. The adult butterfly emerges ( ecloses ) from this and expands its wings by pumping haemolymph into the wing veins. 19. It is produced in the midgut glands and secreted into the haemolymph , whence it is transported to the eggs. 20. The veins carry haemolymph which is pumped in at the time of emergence from the nymphal stage to expand the wings.
