Final answer:
The advantage of a plastic IV TPN system is its commercial availability, fewer safety concerns, and substances for intestinal influx transporters.
Step-by-step explanation:
The advantage of a plastic IV TPN system is that it is commercially available, meaning it can be easily obtained and used. Additionally, it has fewer safety concerns compared to other materials, reducing the risk of complications or reactions.
Finally, plastic IV TPN systems provide substrates for various intestinal influx transporters, allowing for effective absorption of nutrients. The advantage of a plastic IV TPN system is its commercial availability, fewer safety concerns, and fewer substances for intestinal influx transporters.