what are malpighian tubules
A Malpighian tubule is an anatomical structure found in the digestive system of insects that live on land. Usually, these tubules excrete solid waste products, creating an efficient way for the insect to expel toxins and products left over from the breakdown of the insectâs food.Sometimes, a Malpighian tubule is used for functions that are specific to a certain type of insect.sually, these tubules excrete solid waste products, creating an efficient way for the insect to expel toxins and products left over from the breakdown of the insectâs food. Sometimes, a Malpighian tubule is used for functions that are specific to a certain type of insect.