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Skeletal System

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"The skeletal system serves many purposes in an organism's body, including supporting and protecting body movements and producing red blood cells that the circulatory system carries. Jellyfish and worms have skeletons which are hydrostatic and allow the organism to push water in or out of their bodies. Arthropods have exoskeletons. Humans are vertebrates and have an endoskeleton made mainly of collagen. " Fuente: BrightStorm

Skeletal System es un video-tutorial (en inglés) de ©Brightstorm , en su portal disponen de muchos otros vídeos gratuitos de ciencias (Matemáticas, Biología, Química y Física).

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