Yes the PCO2 levels did fluctuate over the course of this run decreased from 40mm Hg to 19.7mm Hg 8. If you observed an acid/base imbalance during this run‚ how would you expect to renal system to compensate for this condition? Renal compensation for alkalosis means the kidneys will correct the basic conditions by increasing H+ absorption and by increasing bicarbonate (HCO3-) secretion. 9. How did the hyperventilation trace differ from the trace for the normal breathing? Did the tidal volumes
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to normal and then flat lined again it continue to follow this trace continuously. 7. What part of the trace shows the refractory period? The atrial contraction is the part of the trace that shows the refractory period 8. Does summation occur? No summation 9. Why is it important that summation not occur in heart muscle? Summation would increase the Heart muscle contractions which would lead to heart attack. Activity 2: Vagus Nerve Stimulation 1. Describe the effect of the
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Exercise 1: Cell Transport Mechanisms and Permeability Worksheet Student Name: Student ID# Student instructions: Follow the step-by-step instructions for this exercise found in your lab manual and record your answers in the spaces below. 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. Exercise1_JohnSmith.doc. Please make sure that your answers are typed in RED. Grading:
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Activity 1 Pre-Lab Quiz K+ inside a cell = 150 mM; K+ outside a cell = 5 mM Na+ inside a cell = 5 mM; Na+ outside a cell = 150 mM Stop & Think question What is the polarity of the resting membrane potential (voltage)? Negative What does it mean that the voltage just inside the membrane is negative? B Membrane of most cells contains K+ leak channels…..b What will happen to the resting membrane potential if the extracellular K+ concentration is increase? Less negative What happens
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If so‚ how? Yes‚ the PCO2 level dropped from 40 to 19.7 because the body was getting rid of CO2 by hyperventilating. 8. If you observed an acid/base imbalance during this run‚ how would you expect to renal system to compensate for this condition? The renal system would generate H+ and excrete HCO3- to counteract the respiratory system and lower the pH back to homeostasis. 9. How did the hyperventilation trace differ from the trace for the normal breathing? Did the tidal volumes change? The tidal
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PhysioEx – Exercise 9 Activity 1: 1. excretion and regulation 2. glomerular capillaries (glomerulus) & Bowman’s capsule 3. The filtrate flows from the Bowman’s capsule into the renal tubule called the proximal convoluted tubule then into the loop of Henle‚ and finally into the distal convoluted tubule: a. Proximal Convoluted Tubule b. Loop of Henle c. Distal Convoluted Tubule 4. When the radius of the afferent arteriole was decreased‚ the pressure and the filtration rate both decreased
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EXERCISE 10: Acid-Base Balance Grading: True/False‚ Multiple-Choice‚ and Fill-in-the-blank type questions will be worth 1 point each whereas Short-answer type questions will be worth 2 points each. This lab will be worth a total of 45 points but will be converted to a percentage grade when registered in your “Gradebook”. |ACTIVITY 1: Hyperventilation |Answers | |A
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predicted that the resting membrane potential would become less negative. 3. The extracellular Na+ did not alter the membrane potential in the resting neuron because the Na+ channels were mostly closed. 4. Na+ and K+ both have a relative permeability of 0 voltage outside a resting neuron and a relative negative permeability inside a resting neuron. 5. A change in Na+ or K+ conductance would affect the resting membrane potential because if the membrane is permeable to a particular ion‚ that ion will diffuse
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M09_ZAO2177_01_SE_CH09.QXD 3/4/11 2:08 AM Page 143 R E V I E W S H E E T EXERCISE NAME ________________________________ LAB TIME/DATE _______________________ A C T I V I T Y 1 9 Renal System Physiology The Effect of Arteriole Radius on Glomerular Filtration 1. What are two primary functions of the kidney? ____________________________________________________________ __________________________________________________________________________________________________ 2. What are the components
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Activity 1: Electrical Stimulation 1. Do you see any kind of response on the oscilloscope screen? NO 2. What was the threshold voltage‚ or the voltage at which you first saw an action potential? 3.0 V 3. How does this tracing compare to the one that was generated at the threshold voltage? The tracing travel in the same fashion but the tracing were different with an increase threshold voltage 4. What reason can you give for the change? Increase voltage 5. Record this maximal voltage here:
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