Cockroach circulation mechanism: The contraction of skeletal muscle expands the pericardial cavity, and blood lymph flows from the underlying peri-visceral sinus. When the skeletal muscle relaxes, blood lymph is pushed through the pores into the heart.
What about the circulatory system of cockroaches?
Tip: Cockroaches have an open cardiovascular system. The cockroach's heart is located in the center of the dorsal side. Contains 13 funnel-shaped segmented chambers. It is the circulatory system and is divided into three parts: the head, abdomen, and chest.
What is the mechanism of circulation?
Blood enters the right atrium from the body, moves to the right ventricle, and is pushed into the pulmonary arteries of the lungs. After absorbing oxygen, blood passes through the pulmonary veins into the left atrium, into the left ventricle, and through the aorta into body tissues and back into the heart.
What's wrong with the cockroach circulatory system?
Option A: Cockroaches have an open circulatory system and are also known as the lacunar circulatory system. In this case, the blood falls into the cavity of the body and does not circulate in the blood vessels, so it flows at low pressure. Therefore, this is an incorrect option.
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