Why is great care taken in intravenous injections to have comparable concentration of solutions to be injected to that of blood plasma?

Explanation

**Step-by-Step Text Solution:**

1. **Understanding Intravenous Injections**: Intravenous (IV) injections are administered directly into the bloodstream. The solutions used in these injections must be compatible with blood plasma to avoid adverse effects on the cells.

2. **Isotonic Solutions**: It is crucial that the solutions used for IV injections are isotonic with blood plasma. An isotonic solution has the same osmotic pressure as blood plasma, meaning that the concentration of solutes (like salts and sugars) is comparable.

3. **Effects of Hypotonic Solutions**: If a hypotonic solution (less concentrated than blood plasma) is injected, it has a lower osmotic pressure. This causes water to move into red blood cells (RBCs) due to osmosis, leading to swelling and potentially bursting of the cells. This can cause serious damage to the cells and disrupt normal bodily functions.

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