Exercise 3: Neurophysiology of Nerve Impulses: Activity 7: The Action Potential: Conduction Velocity Lab Report Pre-lab Quiz Results You scored 100% by answering 5 out of 5 questions correctly. 1. An action potential can be propagated along an axon because there are __________ channels in the membrane. You correctly answered: d. voltage-gated 2. The units of conduction velocity are You correctly answered: d. meters/second. 3. Which of the following will affect axonal conduction velocity? You correctly
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causes the membrane potential to change to a less negative value because the K+ ions diffuse out across the membrane. My results went well compared to my prediction because I 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
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increase in extracellular K+ 3. Which of the following has the most negative voltage? a. Between the outside of the axon and outside the cell body with control K+ ECF b. Between the outside of the axon and outside the cell body with High K+ ECF c. Between the inside of the axon and the outside of the axon with control K+ ECF d. Between the inside of the axon and the outside of the axon with High K+ ECF Activity 2 Pre-Lab Quiz 1 = c; 2= e; 3 = c; 4 = c Stop& Think Questions
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(Generating) a Nerve Impulse 1. Why don’t the terms depolarization and action potential mean the same thing? Depolarization has to do with surfaces becoming more negative or positive and reaches a certain point called a threshold. When the threshold is reached‚ an action potential is initiated. 2. What was the threshold voltage in Activity 1? The threshold voltage in Activity 1 was 3.0. 3. What was the effect of increasing the voltage? How does this change correlate to changes in the nerve? There
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CD with the Lab exercises. PhysioEx 9.0 Lab Exercise text (REQUIRED) Author: Zao et al Text Publisher: Pearson Benjamin Cummings ISBN: 9780321905413 (text only) ISBN: 9780321929648 (text and CD package) ISBN: 9780321907127 (PhysioEx 9.0 with 9.1 updates -CD only) 3. If the PhysioEx 9.0 text is purchased alone – there is online access to the labs after the student registers following the instructions in the front of the text. If you purchase a used PhysioEx 9.0 text‚ there is a fee to
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Challenging Issues Under Accrual Accounting: Long-Lived Depreciable Assets – A Closer Look Discussion Questions 8-1. Some factors determining the estimated useful life of assets might include: a. prior experience the company b. industry norms c. anticipated technological advancements d. the way the asset will be used e. anticipated company growth An important point that needs to be made during the discussion of this question
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Print Form R E V I E W version 8 S H E E T EXERCISE 39 B NAME ____________________________________ LAB TIME/DATE ________________________ Chemical and Physical Processes of Digestion: Computer Simulation Carbohydrate Digestion The following questions refer to Activity 1: Assessing Starch Digestion by Salivary Amylase. 1. At what pH did you see the highest activity of salivary amylase? 7.0 Why? because that is when the salivary is most effective and it breaks down carbohydrates
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REVIEW SHEET EXERCISE 1 Cell Transport Mechanisms and Permeability Simple Diffusion The following refer to Activity 1: Simulating Dialysis (Simple Diffusion). Which solute(s) were able to pass through the 20 MWCO membrane? NONE 1. According to your results‚ which solute had the highest molecular weight? Albumin 2. Which solute displayed the highest rate of diffusion through the 200 MWCO membrane? Na+Cl 3. Using the data from Chart 1‚ explain the relationship between the
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I am disappointed with the SFSU bookstore. I went to the bookstore to buy a Scantron sheet for my final exam in Spring 2016. Whether I went there in the morning or at noon‚ there was always a long line in front of the checkout counter. I spent at least one hour to buy a Scantron sheet. I really hate to waste so much time in line. There are two checkout counters on the upper floor‚ I couldn’t understand why they just used only one counter. I suggest you buy a Scantron earlier. Moreover‚ I am not satisfied
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carrier impulses from the CNS to the periphery‚ the peripheral nerves in turn have the funsion to carry messages from one part of the organism to another‚ so we can understand the action of these drugs. They act in the prevention‚ generation and propagation of the nervous impulse. Acting on the blocking of the depolarization initiation‚ allowing Na + to enter the nerve cell from rest to the trigger threshold (- 50a - 60 mV) would consequently impede the initiation and propagation of the impulse. Therefore
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