Zoology - Structural Organisation in Animals Question with Solution | TestHub

The heart or the cockroach is present in the pericardial sinus located dorsally. It has a$13$chambered heart.$3$chambers are present in the thoracic region while 10 chambers are present in the abdominal region. The chamber in the first thoracic segment shows the presence of an anterior aorta. All chambers have two openings except the last chamber which is blind.