Follow the instructions provided in the laboratory exercise and answer the follo
ID: 3474040 • Letter: F
Question
Follow the instructions provided in the laboratory exercise and answer the following questions as you proceed. Using the data from the Ph.I.LS. journal, draw a graph of the NaCl concentration and % transmittance using the following axes. Use the table to record your different plot points. On the preceding graph, indicate the areas that correspond to the blood cells being in each of the following solutions: (A) isotonic solution: (B) hypertonic solution: (C) hypotonic solution. Physiological saline (0.9%) is isotonic. What concentration (mM) would he equivalent to physiological saline? _____ Describe the net movement of water (into the cell, out of the cell, no net movement) when cells are placed in a(n): a. isotonic solution _____ b. hypotonic solution _____ c. hypertonic solution _____ A patient is given an IV (intravenous) of deionized water (water with no solutes). If a large volume of fluid is administered, predict the effects. Choose one of the words in parentheses for each blank to complete the sentence. Plasma becomes _____ (hypotonic/hypertonic) to the red blood cells. _____ Water moves from the (plasma or red blood cells) _____ to the (plasma or red blood cells) _____ causing the red blood cells to (crenate or swell). A person drinks ocean sail water (3.5% salt). If the person drinks a large volume of the salt water (the salt water is absorbed into the blood), the plasma becomes _____ (hypotonic/hypertonic) to the red blood cells. _____ Water moves from the (plasma or red blood cells) _____ to the (plasma or red blood cells) _____ causing the red blood cells to (crenate or swell). What would you predict if a patient was administered an IV containing a physiological saline solution (0.9% sodium chloride)? _____Explanation / Answer
The deionized water has no solute concentration, so administering lots of this water will decrease the solute concentration of plasma. Thus, the correct options will be hypotonic, plasma, red blood cells and swell respectively.
The second case is opposite of the above case, and the excess sodium chloride will increase the solute concentration of the plasma till it's higher than that of the blood cells, causing water to move from the cells to plasma to equalise the concentration. In this case, the correct options will be hypertonic, plasma, red blood cells and crenate respectively.
When 0.9% saline solution is administered, the plasma and the red blood cells would continue to be isotonic and there will be no net movement of water between the two.