at the base of the antennae and legs. Antennal pulsatile organs releases neurohormones that are
carried to the antennal lumen to influence the sensory neurones. Circulation occurs in the wings of
young adult. In wing circulation is sustained by influxes of air into the wing veins, rather than any
pulsatile organs. Pulses of air in the fine tracheal tubes of the veins push the haemolymph through
the enclosed space of the veins.
The insect circulatory system shows high degree of co-ordination between dorsal vessel,
fibro-muscular diaphragms and accessory pumps.
Dostları ilə paylaş: