Accessory organ who help in blood circulation in insect
Answers
Answer: Accessory organ which help in blood circulation in insects is accessory pulsatile organs (“auxiliary hearts”) that supply body appendages with hemolymph.
Explanation:
insects have accessory pulsatile organs (“auxiliary hearts”) that supply body appendages with hemolymph. They are indispensable in the open circulatory system for hemolymph exchange in antennae, long mouthparts, legs, wings, and abdominal appendages. This review deals with the great diversity in the functional morphology and the evolution of these accessory pulsatile organs. In primitive insects, hemolymph is supplied to antennae and cerci by arteries connected to the dorsal vessel. In higher insects, however, these arteries were decoupled and associated with autonomous pumps that entered their body plan as evolutionary innovations. To ensure hemolymph supply to legs, wings, and some other appendages, completely new accessory pulsatile organs evolved.