Although it isn’t made from steel and can’t run with out relaxation, the human body is most assuredly a machine. All mammals have lungs and breathe in air and all of them are warm-blooded (they’re able to preserve a continuing body temperature whatever the outdoors temperature.) Mammals and birds share a standard attribute – the possession of four-chambered hearts that flow into blood effectively to all elements of the physique.
One of these structure will be seen in primitive animals such because the lancet, coelacanth, and even the fashionable dogfish. 2. belonging or pertaining to the Vertebrata, a subphylum of chordate animals having an inner skeleton of bone or cartilage that includes a braincase and a spinal column, and comprising mammals, birds, reptiles, amphibians, and fishes.
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