It seems like you might be discussing different systems in the body and their roles in transporting substances. However, the terminology you used (like "appointments") is unclear. Could you please clarify or provide more context?
In general, here's how transport in the body works:
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Nervous System: The spinal cord is part of the central nervous system (CNS), transmitting signals between the brain and the rest of the body. It does not transport "appointments" but rather neural signals that control muscle movement and sensory information.
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Circulatory System: The bloodstream transports hormones, nutrients, and oxygen to cells throughout the body, while also helping to remove waste products. This is often done through the heart and a network of blood vessels.
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Cytoplasm: This is the fluid inside cells where various organelles are found. It does not transport substances throughout the entire body but is involved in cellular processes and the movement of materials within the cell.
If you meant something specific about transport mechanisms or systems, please elaborate, and I’d be happy to help!