Question

What is the name of blood vessel, which arises from first chamber of heart in cockroach?

• A. Nephrocyte
• B. Fenestrae
• C. Ostia
• D. Anterior aorta

Answer 1

Answer: (D)

Anterior aorta

The circulatory system of the cockroach is placed in the pericardial sinus. The circulatory system of cockroach consists of a tubular heart, which is 13 chambered. A blood vessel called as the anterior aorta arises from the first chamber of the heart.
Each chamber of the heart receives oxygenated blood from the dorsal sinus through one pair of slit-like openings called as ostia.
Fenestrae is one of two perforations, covered with the membrane on the head of a cockroach.
The nephrocyte in a cockroach is the lateral wall of their heart. This wall helps excretion and helps store waste.

So, the correct answer is option D.