Exercise 2: Skeletal Muscle Physiology: Activity 4: Tetanus in Isolated Skeletal Muscle Lab Report Pre-lab Quiz Results You scored 100% by answering 3 out of 3 questions correctly. 1. Stimulus frequency refers to You correctly answered: b. the rate that stimulating voltage pulses are applied to an isolated whole skeletal muscle. 2. Which of the following distinguishes a state of unfused tetanus from a state of complete (fused) tetanus? You correctly answered: d. Muscle tension increases and decreases
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Name: Laura Meng SID: 22430663 GSI: Johnathan Wright Section #112 Laboratory 0: “400 Years of the Telescope” The PBS documentary outlines our progressive journey in the field of astronomy and the resulted revolutionary discoveries from the continually improving technologies. The history of telescopes first began in the sixteen hundreds‚ when Hale’s invention of refracting telescopes drastically changed people’s view of the Universe at the time‚ for the view from the telescope revealed the
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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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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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we still to this day racial profile everyone we see‚ we need to start to look at everyone with the same mind set and get that first racial impression out of our head. 8). US War on Drugs- US should worry about things other than looking for drugs. 9). Immigration- the USA is a place where all people are looked at equally and all are free‚ then why can’t people who want to better their life come to the best place to do so? 10). Should women be allowed to Pastor- who ever said women cant pastor‚
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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 change? The amount of air inspired and expired (tidal volume) increased from the normal value of around 500ml to around 3 Liters 10. What might
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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 vagus nerve stimulation
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again‚ it continued 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 does not occur. 9. Why is it important that summation not occur in heart muscle? Summation would increase the Heart muscle contractions which would lead to a heart attack. Activity 2: Vagus Nerve Stimulation 1. Describe the effect of the vagus nerve stimulation
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Skeletal Muscle Physiology 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. Exercise2_JohnSmith.doc. Please make sure that your answers are typed in RED. (You may delete these instructions before submission.) Grading: True/False
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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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