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a collection of tissues joined in a structural unit to serve a common function.
small ball of chewed food mixed with saliva that is formed in the mouth, which is swallowed.
the outermost nucleated cytoplasmic layer of the Schwann cells that surrounds the axon of a...
organisms, such as plants, which are able to produce their own organic foodstuffs from inorganic...
a v-shaped extension of the mammalian soft palate, which closes the opening to the nasal...
hollow tubular vascular tissue cells, strengthened with lignin that conducts water and mineral...