Excretion in Cockroach

Excretion in Cockroach

Cockroach is uricotelic. In cockroach followings structures help in excretion:

1. Malpighian tubules
   
2. Fat bodies
   
3. Nephrocytes
   
4. Cuticle
   
5. Uricose glands in some species.

Malpighian tubules: Malpighian tubules are attached at the junctions of midgut and hindgut. Excretory products, dissolve in haemolymph and absorbed by malpighian tubes and discharge into hindgut.

Fat bodies: Some fat bodies are also present in haemocoel, which have mycetocytes, urate cells, oenocytes and trophocytes.

Nephrocytes: Nephrocytes present in lateral wall of heart help in excretion and store nitrogenous waste.
   

Uricose glands: In some species, in male uricose glands are present on periphery of mushroom glands. These glands synthesize uric acid. Malpighian tubules are analogous to mammalian kidney. Fat bodies are analogous to vertebrate liver.