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tough connective tissue found in conjunction with muscle, cartilage and bone.
a blood vessel that returns oxygenated blood from the lungs to the left atrium of the heart.
simple inorganic chemical substances (mineral salts) that are needed in relatively large amounts...
animals with three cellular body wall layers: the ectoderm, mesoderm and endoderm.
a part of the brain that is located below the thalamus having numerous functions, such as: it...