5 Isotonic saline and 5% dextrose in water are solutions that are considered iso

Question

5 Isotonic saline and 5% dextrose in water are solutions that are considered isotonic to human blood. What effect on red blood cells would you expect if a patient were given these fluids intravenously? A solution of 10% dextrose in water is hypertonic to human blood. What would happen if you were to infuse your patient with this solution? 6 Gatorade and other sports drinks are actually hypotonic sol utions. How do these drinks rehydrate the cells of their users? 7 Predict locations in the body where cell populations would undergo rapid mitosis. Why would you expect frequent cell division in these locations? Many anti-cancer drugs inhibit the formation of the mitotic spindle. What affect will this have on cell division? Why?

Explanation / Answer

5. When an isotonic solution is supplied intravenously, the volume of blood increases, but it doesn't throw off the tonicity of the other cells apart. It maintains the same water and electrolyte balance in the cells as it existed before the solution was supplied. However, when a hypertonic solution is supplied to the human blood, the tonicity of the plasma portion of the blood increases with respect to the cellular parts of the blood, resulting in the blood cells losing water to the plasma and getting shriveled up. This might also be observed in other cells directly in contact with blood.

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