Identify the correct path of blood circulation in cockroach.

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Perineural sinus → Aorta → Heart → Ostia → Head sinus

Head sinus → perivisceral sinus → aorta → ostia → heart

Pericardial sinus → Ostia → Heart → Aorta → Head sinus

Head sinus→ Ostia → Heart → Aorta → Pericardial sinus

answer is B.

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Detailed Solution

Pericardial sinus → Ostia → Heart → Aorta → Head sinus.

Blood from the pericardial sinus enters the heart through the ostia. From the heart blood is pumped anteriorly into the head sinus through the aorta. From the head sinus, it enters the perineural sinus and the perivisceral sinus and from there to the pericardial sinus.

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