The function of the circulatory system (CS) is transport for supply of nutrients like amino acids, vitamins or electrolytes, gases, hormones, and blood cells; removal of toxic agents and metabolic products; and regulation of body temperature and volume. In some animals like flatworm or jellyfish, the CS is absent. In these animals every cell is able to obtain nutrients/water and oxygen without the need of the transport system.
CITATION STYLE
Stöllberger, C. (2014). Lifeblood flow: The circulatory systems. In Comparative Medicine: Anatomy and Physiology (Vol. 9783709115596, pp. 61–70). Springer-Verlag Wien. https://doi.org/10.1007/978-3-7091-1559-6_5
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