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  4. The number of heart chambers found in cockroach is

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Q. The number of heart chambers found in cockroach is

Punjab PMETPunjab PMET 2009

Solution:

Heart of cockroach is a pulsatile 13 chambered structure. Its in halent openings are called ostia, which are guarded by valves. This heart is in fact, the dorsal blood vessel, which pulsates with the help of external along muscles. The blood in heart flow unidirectionally from posterior end to the anterior end of the body.