Hey! Okay so I have this huge science test tomorrow, and i was wondering if anyone knew how many "loops" a fish's, reptile's, and amphibian's heart has?? I'm meaning for the circulatory system....
I hope im getting this question as clear as i can, im soooo confused!
thank you soooooooooooooo much!
%26lt;33madison
Heart's Circulatory Loops for a fish, reptile, and amphibian!??
Fish: The unoxygenated blood is pumped through the 2 chambered heart to the gills then the rest of the body. One Loop.
Amphibians: The unoxygenated blood enters the right atrium then to the single ventricle then to the lungs (one loop). It come back to the left atrium, then the same ventricle and then to the body (second loop).
Reptiles: Same as the amphibians except the ventricle is partially divided by a structure called a septum. 2 Loops.
Reply:Fish: two-chambered heart, single loop
Reptile: three-chambered, double loop (their circulatory system is a little better than amphibians')
Amphibian: three-chambered, double loop
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