Electrical Stimulation Activity 1: Direct Heart Stimulation 1. Did you see any change in the trace? No change in the trace 2. Why or why not? This is because it needs more simulation 3. Did you see any change in the trace? I did see a change in the trace 4. Why or why not? There is double stimulation 5. Describe the change you see in the trace. How does it differ from the baseline trace? The trace increased from the baseline trace 6. What effect do the repeated stimuli
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Lab #3: Isotonic contraction and the effect of load on skeletal muscles Abstract The job of the motor nervous system is to control certain elements in muscles simultaneously to ultimately produce movement. Movement of the body is the result of specialized cells directly associated with skeletal muscle. Skeletal muscles are voluntary muscle and must contract before movement can occur. We know the muscle team moving the arm is formed at the biceps and triceps. Biceps can bend the elbow‚ but
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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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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: 6.0 V Activity 2: Mechanical Stimulation 1. When the glass
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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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NAME_________________________________ R E V I E W S H E E T EXERCISE 6 Classification of Tissues Tissue Structure and Function—General Review A group of cells working together to perform a common function. They form together to make up organs 1. Define tissue. _______________________________________________________________________________________ _______________________________________________________________________________________________ ___ _ 2. Use the key choices to identify the major tissue
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Physiology of fitness Acute exercise lasts for the length of a training session. During this time our bodies respond to the exercise and physical stress of the physical activity in lots of different ways. These are called acute responses. Acute responses immediate responses to exercise‚ such as an increase in body temperature and heart rate. Musculoskeletal response The musculoskeletal system allows and enables the body to move through a system of muscles‚ bones‚ tendons‚ cartilage and ligaments
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into the cell The membrane has open K+ channels and changing….B. mostly closed Post-Lab Quiz 1. A negative membrane potential was recorded when the tip of the microelectrode was: a. In the extracellular solution just outside the cell body 2. Which of the following caused a change in membrane potential from -70 to -40 in the cell body? a. An increase in extracellular K+ 3. Which of the following has the most negative voltage? a. Between the outside of the axon and outside the
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lower concentration. 2. Increasing extracellular K+ 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
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1. At 20 seconds‚ pH = 7.4 2. At 40 seconds‚ pH = 7.4 3. At 60 seconds‚ pH = 7.4 4. Did the pH level of the blood change at all during normal breathing? If so‚ how? No‚ it stayed at 7.4 5. Was the pH level always within the “normal” range for the human body? Yes 6. Did the PCO2 level change during the course of normal breathing? If so‚ how? No‚ it stayed at 40mm Hg Activity 2a: Hyperventilation – Run 1 1. At 20 seconds‚ pH = 7.43 2. At 40 seconds‚ pH = 7.52
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