Question

your treatment choices are saline solutions with different amounts of salt (nacl) that can be added to clarks blood and affect osmosis in the brain. in medicine and veterinary medicine, saline solutions are compared with the normal concentration of sodium (~143 mmol/l) in healthy blood. three saline solutions are available: isotonic, hypotonic, and hypertonic. concentration of sodium interpret each as higher, lower, or equal to normal blood na+ concentration. lower equal higher isotonic saline hypotonic saline hypertonic saline concentration of free water now, rank these 3 saline solutions based on free water concentration. lowest middle highest isotonic saline hypotonic saline hypertonic saline correct! 3/3 correct.

Explanation:

• Isotonic saline has the same sodium concentration as normal blood. So, the free - water concentration is in the middle.
• Hypotonic saline has a lower sodium concentration than normal blood. Since sodium and free water are inversely related in terms of concentration (as the total solution is a combination of sodium and water), a lower sodium concentration means a higher free - water concentration.
• Hypertonic saline has a higher sodium concentration than normal blood. So, it has the lowest free - water concentration.

Answer:

• Isotonic Saline: Middle
• Hypotonic Saline: Highest
• Hypertonic Saline: Lowest