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2006-09-13 23:07:38 · 2 answers · asked by om 2 in Science & Mathematics Zoology

2 answers

Cockroaches have an open circulatory system. They don't have any blood vessels.

I tried a Yahoo! Image search and I couldn't find any results. Maybe that's the reason.

2006-09-14 00:04:31 · answer #1 · answered by Anonymous · 0 0

You can't find it easily because it has open circulartory system .it use hemocoel instead of blood vessels and trachea to exchange gas with the air outside;also,its blood is rather transparent as it don't have colorful pigment in circulartory system like us(hemoglobin).* I used to make the operation on cockroach myself for around 3 times in my life.

2006-09-14 20:32:26 · answer #2 · answered by Boonsom U 1 · 1 0

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