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Q.
What is correct about the heart of cockroach?
NTA AbhyasNTA Abhyas 2020Structural Organisation in Animals
Solution:
A cockroach possesses a 13-chambered tubular, muscular, elongated and neurogenic heart.
Blood circulation in cockroach is maintained by wing-shaped alary muscles (involuntary).
Each chamber of the heart receives blood from the sinus through 1 pair of slit-like openings called ostia.
The flow of blood can be represented as:
Blood in heart $ \rightarrow $ Pumped into the sinuses $ \rightarrow $ Re-enter the heart by ostia $ \rightarrow $ Again pumped into the sinuses.