Zoology - Structural Organisation in Animals Question with Solution | TestHub

In the head region, the brain is represented by supra oesophageal ganglion which supplies nerves to antennae and compound eyes.

A ring of 6-8 blind tubules called hepatic or gastric caeca is present at the junction of foregut and midgut, which secrete
digestive juice.

Heart is attached to the body wall by 12 pairs of alary muscles. The heart chambers contract one after the other rapidly and it is due to contraction and relaxation of alary muscles.

There is a pair of spermathecae opening in to the genital pouch in the 6^thabdominal segment of female cockroach. This is filled with sperms after copulation.