Determine which letter denotes physiological, hypotonic and hypertonic solutions.

1. In a physiological solution, the concentration of salts and the osmotic pressure in the solution correspond to the normal concentration of blood plasma and the osmotic pressure of the erythrocyte cell. Therefore, water osmotically moves into the cell and outward in equal proportions
2.In a hypotonic solution, the concentration of salts and osmotic pressure are lower than inside the cell, so water osmotically enters the cells – the erythrocyte swells and bursts
3) In a hypertonic solution, the concentration of salts and osmotic pressure are higher than inside the cell, so water osmotically leaves the cell – the erythrocyte shrinks

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