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How is the central ray positioned for an x-ray projection done with the patient placed in a decubitus position?
Cell Membranes
Cell membranes are thin, flexible barriers that surround cells, regulating the passage of substances in and out of the cell, and providing structural support.
Vacuoles
Membrane-bound organelles in cells, particularly plant cells, which are involved in storage and maintenance of cellular homeostasis.
Lysosomes
Intracellular organelles present in many animal cells; contain a variety of hydrolytic enzymes.
Toxic Metabolic Waste
Harmful substances produced from the metabolic processes within organisms, which must be excreted or otherwise processed to avoid damage.
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