Functions of haemolymph
1. Lubricant
Haemolymph keeps the internal cells moist and the movement of internal organs is also
made easy.
2. Hydraulic medium
Hydrostatis pressure developed due to blood pumping is useful in the following processes.
i.
Ecdysis (moulting)
ii.
Wing expansion in adults
iii.
Ecolosion in diptera (adult emergence from the puparium using ptilinum)
iv.
Eversion of penis in male insects
v.
Eversion of osmeteria in papilionid larvae
vi.
Eversion of mask in naiad of dragonfly
vii.
Maintenance of body shape in soft bodied catepillars.
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