the small window to the right of the Hyperventilation button. 5. Watch the oscilloscope display and the PCO2 window, and click Stop before the tracing reaches the end of the screen. What happens to PCO2 during rapid breathing? Explain your answer. 6. Click Record Data. 7. Now click Clear Tracings to prepare for the next run. Rebreathing When Rebreathing is clicked, a small bag will appear over the end of the air tube to allow the air within the lungs to be repeatedly inspired and expired. 1.
and test hypotheses related to muscle contraction. • Practice graphing data from an experiment. • Practice interpreting a graph and drawing conclusions from data. Directions - Getting Started • This exercise uses the PhysioEx disc in the back of your lab manual or available online through Mastering A&P. • Obtain a laptop computer, power cord, mouse and mouse pad from the cabinet and assemble it as directed by the instructor. • Open the computer
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 buffer allowed
Lab Report 1: Cell Transport Mechanisms and Permeability Using PhysioEx 8.0 Introduction The purpose of these experiments is to examine the driving force behind the movement of substances across a selective or semiperpeable plasma membrane. Experiment simulations examine substances that move passively through a semipermeable membrane, and those that require active transport. Those that move passively through the membrane will do so in these simulations by facilitated
PhysioEx™ Lab: Cell Transport Mechanisms and Permeability Activity 1: Simple Diffusion Chart 1 Dialysis Results (Average Diffusion rate in mM/min) Solute Membrane (MWCO) 20 50 100 200 NaCl (—) 0.0150 0.0150 0.0150 Urea (—) (—) 0.0094 0.0094 Albumin (—) (—) (—) (—) Glucose (—) (—) (—) 0.0040 1) Which solute(s) were able to diffuse into the right beaker from the left? NaCl, Urea, Glucose 2) Which solute(s) did not diffuse? Albumin 3) If the solution in the left beaker
physioex 9.0 Review Sheet Exercise 4 Endocrine System Physiology Name Laura Bauer Lab Time/Date Thursday 5:30-7:30 Activity 1 Metabolism and Thyroid Hormone Part 1 1 Which rat had the fastest basal metabolic rate (BMR)? The Normal rat had the fastest BMR. 2 Why did the metabolic rates differ between the normal rat and the surgically altered rats? How well did the results compare with your prediction? ___ The BMRs differed because the surgically altered rats were missing
physioex 9.0 Review Sheet Exercise 4 Endocrine System Physiology Name: Kelly E. Fischer Lab Time/Date: 7:00 PM/Wednesday Activity 1 Metabolism and Thyroid Hormone Part 1 1 Which rat had the fastest basal metabolic rate (BMR)? The normal rat had the faster basal metabolic rate, because it was not missing its pituitary gland or its thyroid gland. 2 Why did the metabolic rates differ between the normal rat and the surgically altered rats? How well did the results compare with your prediction
Physioex 9.0 Review Sheet Exercise 1 Cell Transport Mechanisms and Permeability Name Lab Time/Date ___ Activity 1 Simulating Dialysis (Simple Diffusion) 1. Describe two variables that affect the rate of diffusion. Size of material and concentration 2. Why do you think the urea was not able to diffuse through the 20 MWCO membrane? How well did the results compare with your prediction? The molecules were too large to pass through. This is what I predicted
relationship between molecular weight and molecular size. 3. To understand how solute concentration affects the rate of diffusion. 4. To understand how molecular weight affects the rate of diffusion. Experiment Instructions Go to the home page in the PhysioEx software and click Exercise 1: Cell Transport Mechanisms and Permeability. Click Activity 1: Simulating Dialysis (Simple Diffusion), and take the online Pre-lab Quiz for Activity 1. After you take the online Pre-lab Quiz, click the Experiment tab
PHYSIOEX 9.0 REVIEW SHEET EXERCISE 3 Neurophysiology of Nerve Impulses NAME : _HIMA BHARATHA ________ LAB TIME/DATE: WEDNESDAY A.M. LAB______ ACTIVITY 1 The Resting Membrane Potential 1. Explain why increasing extracellular K+ reduces the net diffusion of K+ out of the neuron through the K+ leak channels. ___The concentration of extracellular K+ ions would be high and this would prevent more K+ ions from diffusing out of the cell. 2. Explain why increasing extracellular K+ causes the membrane potential