People also ask
Do fish have a heart like organ?
Apart from heart, heart-like organs are present only in Agnatha (Myxine and Petromyzon). The heart of fishes consists of four chambers, a sinus venosus, an atrium, a ventricle and a conus or a bulbus arteriosus (Fig. 6.1a-b).
What is the function of the four hearts in a fish?
One of its four hearts, a branchial heart, pumps blood to the entire body while the other three are considered accessory pumps. They thrive on the bottom of the ocean floor, where oxygen is scarce, scavenging for fish or even dead carcasses to feed on.
What animal has a heart?
The Sea Cucumbers are probably the only animal from the small list above that does look a bit like an animal that could have a heart. Actually, we also find animals with multiple hearts. Let try and uncover these creatures and see why they need an additional heart and what it is used for. Octopuses have three hearts.
How many hearts do squids have?
Squids have three hearts; one main heart and two branchial hearts. Like humans, most animals have a single heart. However, some animals do not have hearts at all like the starfish and some echinoderms while other animals like cephalopods have several hearts.