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blood circuit to and from the cardiac muscle.
a thick layer inside the primary cell wall. It consists mainly of cellulose, hemicellulose and...
simple inorganic chemical substances (mineral salts) that are needed in relatively large amounts...
small solid particles of matter such as soot, ash, metal and dust.
the outermost layer of the stele or vascular cylinder in a dicotyledonous plant root. Lateral...
a muscular structure on the floor of the mouth of most vertebrates, which manipulates food for ...