EXERCISE 10: Acid-Base Balance Student Name: Landy Jean-Baptiste Student ID: 4304736 Student instructions: Follow the step-by-step instructions for this exercise found in your lab manual and record your answers in the spaces below. You are only required to perform Activity 1 & 2 in this simulation. Submit this completed document by the assignment due date found in the Syllabus. Rename this document to include your first and last name prior to submitting‚ e.g. Exercise10_JohnSmith.doc
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results compare with your prediction? If extracellular K+ is increased then the intracellular K+ will decrease. Fewer intracellular K+ ions would result in the membrane potential being less negative. The results of my prediction were the same. 3. Explain why a change in extracellular Na+ did not alter the membrane potential in the resting neuron. There are less Na+ leak channels than K+ leak channels‚ and more of the K+ channels are open. 4. Discuss the relative permeability of the membrane
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EXERCISE 7: RESPIRATORY SYSTEM MECHANICS ACTIVITY 1: Measuring Respiratory Volumes and Calculating Capacities | Answers | 1. Which of the following processes does not occur during inspiration? a. The diaphragm moves to a flattened position. b. Gas pressure inside the lungs is lowered. c. Inspiratory muscles relax. d. The size of the thoracic cavity increases. | C-Inspiratory muscles relax. | 1. During normal quiet breathing‚ about ______ ml of air moves into and out
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causes the membrane potential to change to a less negative value. How well did the results compare with your predictions? There are two potassium’s for every sodium so the increase of potassium will make it more negative. Prediction was correct. 3. Explain why a change in extracellular Na+ did not alter the membrane potential in the resting neuron? The sodium channels are mostly closed during the resting state. 4. Discuss the relative permeability of the membrane to Na+ and K+ in a resting
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REVIEW SHEET EXERCISE 1 Cell Transport Mechanisms and Permeability 1. Match each of the definitions in Column A with the appropriate term in Column B. |Column A |Column B | |__E__ term used to describe a solution that has a lower |a. diffusion | |concentration of solutes compared to another solution |b. facilitated diffusion
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Human Anatomy & Physiology Version 8.0 Physioex Exercise 8 CHEMICAL AND PHYSICAL PROCESSES OF DIGESTION - ANSWERS Please note: I do not include the charts as you still have to do the experiments and print the data and graphs. Activity 1 What do tubes 2‚ 6‚ and 7 reveal about pH and amylase activity? Hint: What variable was changed in the procedure? a. maximum of amylase is at pH 7.0 (tubes 2 & 5‚ brownish red) and pH 9.0 showed little activity (tubes 6 & 7‚ green) Which pH
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Review Sheet Results 1. Explain why increasing extracellular K+ reduces the net diffusion of K+ out of the neuron through the K+ leak channels. Your answer: If the extracellular K+ increases then the concentration of intracellular K+ will decrease causing a decrease in the steepness of the concentration gradient and fewer K+ ions would be drawn out. 2. Explain why increasing extracellular K+ causes the membrane potential to change to a less negative value. How well did the results compare
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Exercise 9 1. A farmer wanted to find the relationship between the amount of fertilizer used and the yield of corn. He selected seven acres of his land on which he used different amounts of fertilizer to grow corn. The following table gives the amount of fertilizer (in pounds) used and the yield of corn (in bushels)for each of the seven acres. Fertilizer Used (x) 120 80 100 70 88 75 110 Yield of Corn(y) 138 112 129 96 119 104 134 a. Find the least squares regression line. a. Calculate r and r2
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Respiratory Volumes 1. Minute respiratory volume: 7‚500 ml 2. Judging from the trace you generated‚ each inspiration took place over how many seconds? 2 Seconds 3. Each expiration took place over how many seconds? 2 seconds 4. Does the duration of inspiration or expiration vary when you tested/measured the ERV or FVC? Yes Activity 3: Effect of Restricted Air Flow on Respiratory Volumes 1. How does this set of data compare to the data you recorded for Activity 2? The MRV is 3075 and the
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Natalie Salaverria 01/21/11 LAB EXERCISE I After the first exercise : Simulating Simple diffusion Which Materials diffused from the left beaker to the right beaker? NaCl ‚ Urea ‚ Glucose Which did not ? Albumin Why ? Albumin’s Composition or charge was too great to diffuse through the membrane. After the 2nd activity : Simulating Dialysis What happens to the urea concentration in the left beaker (the Patient)? It diffused to the right beaker Why does this occur? The excess
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