Give the location of hepatic caeca in a cockroach. What is their function?

(N/A) Hepatic caeca are $6-8$ narrow,hollow,and blind-ended tubules.
They are located at the junction of the foregut and the midgut in the cockroach.
Their primary function is to secrete digestive juices,which aid in the digestion of food.
They are analogous to the liver in vertebrates,hence the name 'hepatic' caeca.