Open circulatory system lo, blood open ga body cavity lo flow avtundi, insects la. Closed system lo, blood vessels lo confine cheskuntundi, mammals la. Giraffe ki brain varaku blood pump cheyyali kabatti, pedha pressure kavali.
Nenu safari lo chusa, giraffe talli tarvatha, taggina head ni malli leputappudu, clear ga artham ayindi – dani heart ni chala bhayankaramaina pressure handle cheyyali!
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