Circulation

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The chicken’s system for pumping blood around the body works very similarly to ours.  They have a four-chambered heart that works at about 250 to 300 beats per minute with a network of arteries to transport blood to the body tissues, small capillaries that allow exchange of oxygen, nutrients, and waste products with the tissues, and veins to carry everything back to the heart and lungs. The arteries and veins are usually located right next to each other as way of helping to conserve heat in the body core.

Chicken blood cells are oval shaped and have a nucelus in the centre, which allows them to exchange everything more efficiently to meet their relatively higher energy demands.