A 0.9% NaCl solution is isotonic to red blood cells (RBC). Which of these describes the results if RBC are placed into a 9% NaCl solution? A. They will shrink B. They will burst O C. Nothing will happen to the red blood cells D. They will expand but not burst E. None of the above
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- The RBCs (red blood cells) should have shriveled in one test tube of horse blood with which you worked. Shriveling occurred because the solution surrounding the RBCs ______. ____ a. had a higher concentration of water than the RBCs ____ b. was hypotonic compared to the RBCs ____ c. was hypertonic compared to the RBCs ____ d. was isotonic with the RBCsWhich of the following is not a formed element in the blood?a. red blood cellsb. white blood cellsc. plateletsd. organic molecules and saltsThe life span of white blood cells is Select one: a. none of above b. months to even years C. minutes to days O d. seconds to minutes
- Match the following with its function: v plasma protein that creates osmotic pressure that prevents fluids from leaking out of blood vessels (prevents edema) albumin A. fibrinogen В. plasma protein that helps cause blood clotting c. platelets Formed element that causes blood clotting. white blood cells D. Formed element important in the immune system. red blood cells Е. formed element that carries oxygen hemoglobin F. protein that binds to oxygen > >When you placed horse blood into a test tube that contained distilled water ______. ____ a. you could not read a printed page when looking through the tube ____ b. the RBCs had a lower solute concentration than the surrounding solution ____ c. the RBCs burst ____ d. a, b, and c are correctFill in the blanks with the appropriate word from the following group: hemolysis, water, increase, crenation, decrease, isotonic. The RBC’s in Figure 8.7 “a” are suspended in an (blank1) solution. If red blood cells are placed in a hypertonic solution they lose (blank2) and (blank3) in size. This process is called (blank4). If red blood cells are placed in a hypotonic solution they gain (blank5), (blank6) in size, and may burst. This process is called (blank7).
- Which of the following statements are true of red blood cells (RBCs)? (Read carefully and select all of the correct statements.) A. The protein hemoglobin contains the mineral iron. B. The life span of an RBC is about 60 days. C. Hemoglobin that has given up its oxygen is called debonded hemoglobin. D.RBCs have a life span of 120 days. E. The RBC is also know as erythrocyte. OF. The RBC is also known as thrombocytes. Type here to search D 5 CENFor a person whose hematocrit is 45%, a. plasma volume would be 55% of total blood volume b. plasma volume would be 45% of total blood volume c. red blood cell volume would be 55% of total blood volume d. white blood cell volume would be 45% of total blood volume All of the following characteristics of platelets are true EXCEPT a. Exhibit many vesicles b. Have nucleus c. Platelets are fragments of megakaryocytes d. Smallest size compared to other blood cellular components of 2- 4 μm If someone has no megakaryocytes, he/she will a. not be able to phagocytize bacteria b. have a reduced ability to prevent blood loss c. not be able to make red blood cells d. not be able to make white blood cellsFlasks X, Y, and Z contain solutions with different concentrations of the solute, NaCl. Flask X has 0.5% NaCl Flask Y has 0.9% NaCl Flask Z has 1.5% NaCl Red blood cells (0.9% NaCl) are placed in each flask. Predict what will happen to the RBC in each of the flasks. A. Flask X: Contract, Flask Y: unchanged, Flask Z: Swell B. Flask X: Swell, Flask Y: unchanged, Flask Z: contract C. Flask X: Unchanged, Flask Y: Swell, Flask Z: Contract D. Flask X: Unchanged, Flask Y: unchanged, Flask Z: unchanged
- Nifedipine is an antihypertension medication that is also used to reduce the workload on the heart. The study below compares the effects of two different types of capsules used to administer the drug to patients (GITSred line, and Cotracten Xblue line). Each graph shows changes with time following initial administra- tion of the capsules. Figure A compares the levels of nifedipine in the blood with each capsule type. The ability of the different cap- sules to reduce workload on the heart by altering blood pressure or heart rate is shown in Figures B and C, respectively. Are elevated plasma levels of nifedipine(above 10 ng/mL) required for the drug to perform its actions? Source: M. J. Brown and C. B. Toal. 2008. Formulation of long-acting nifedipine tablets influences the heart rate and sympathetic nervous system response in hypertensive patients. British Journal of Clinical Pharmacology 65:646652.Nifedipine is an antihypertension medication that is also used to reduce the workload on the heart. The study below compares the effects of two different types of capsules used to administer the drug to patients (GITSred line, and Cotracten Xblue line). Each graph shows changes with time following initial administra- tion of the capsules. Figure A compares the levels of nifedipine in the blood with each capsule type. The ability of the different cap- sules to reduce workload on the heart by altering blood pressure or heart rate is shown in Figures B and C, respectively. Which type of capsule would you expect to have fewer side effects? Source: M. J. Brown and C. B. Toal. 2008. Formulation of long-acting nifedipine tablets influences the heart rate and sympathetic nervous system response in hypertensive patients. British Journal of Clinical Pharmacology 65:646652.Match the following with its function: plasma protein that creates osmotic pressure that prevents fluids from leaking out of blood vessels (prevents edema) A. albumin B. fibrinogen plasma protein that helps cause blood clotting C. platelets v Formed element that causes blood clotting. D. white blood cells Formed element important in the immune E. red blood cells system. F. hemoglobin v formed element that carries oxygen v protein that binds to oxygen
