RESPIRATORY PIGMENTS -
Resp. pig. is generally Hb (Fe is attached to globine by chellate bond).
In Earthworm Erythroqruorine present.
Haemocyanine (Cu) generally dissolved in plasma e.g. Crustacean, Molusca.
In Uro chordata venidium (green) present.
BREATHING -
Common breathing is Eupnia. Loud breath is Tachypnia. Slow breath is Brachypnia. Difficult breath is Dyspnia.