PHYSIOEX 9‚ ACTIVITY #3 Review Questions ACTIVITY #1 1. Explain why increasing extracellular K+ reduces the net diffusion of K+ out the neuron through the K+ leak channels? 2. Explain why increasing extracellular K+ causes the membrane potential to change to a less negative value. How well did the results compare with your predictions? 3. Explain why a change in extracellular Na+ did not significantly alter the membrane potential in the resting neuron? 4. Discuss the relative permeability
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WT + 15 = 20 WT = 5 6-6 Trapezoids and Kites Find each measure. 1. ANSWER: 5 COORDINATE GEOMETRY Quadrilateral ABCD has vertices A (–4‚ –1)‚ B(–2‚ 3)‚ C(3‚ 3)‚ and D(5‚ –1). 3. Verify that ABCD is a trapezoid. SOLUTION: First graph the points on a coordinate grid and draw the trapezoid. SOLUTION: The trapezoid ABCD is an isosceles trapezoid. So‚ each pair of base angles is congruent. Therefore‚ ANSWER: 101 2. WT‚ if ZX = 20 and TY = 15 SOLUTION: The trapezoid WXYZ is an isosceles trapezoid
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the efferent radius decreases the glomerular filtration rate. Increasing the efferent radius allows more blood drainage out of the glomerulus and that decreases the amount of blood to be filtered so the glomerular filtration rate will decrease. 6. How did decreasing the efferent radius affect glomerular filtration rate? >> Decreasing the efferent radius increases the glomerular filtration rate. The constriction of the efferent radius will limit blood drainage out of the glomeruli and
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made a slightly larger action potential than the unheated rod. 5. Describe the types of stimuli that generated an action potential. The different stimuli that generate an action potential are electrical‚ chemical‚ mechanical‚ and thermal. 6. If you were to spend a lot of time studying nerve physiology in the laboratory‚ what type of stimulus would you use and why? I would use chemical stimulation. I would want to see what different chemicals would cause an action potential versus chemicals
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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
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tension peaks. The relaxation phase is the period of contraction after the contraction phase‚ and ends at the end of muscle contraction. 5. No. In all tests‚ the latent period remained the same‚ at 2.80 msec. This was what I had predicted. 6. The sodium ions start move into the cell to bring about the membrane depolarization. Activity 2 1. As the stimulus voltage is increased past
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any of the membranes. 3. Pressure changed the speed of filtration but pressure does not affect the size of the solutes nor the pore size of the membrane. Activity 5 1. The SP pump ejects 3 sodium ions per every 2 potassium ions coming in. 9:6 represents the ration of the SP pump 2. Predicted that no sodium would be transported because the coupled
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Exercise 2: Skeletal Muscle Physiology: Activity 3: The Effect of Stimulus Frequency on Skeletal Muscle Contraction Lab Report Pre-lab Quiz Results You scored 100% by answering 4 out of 4 questions correctly. 1. During a single twitch of a skeletal muscle You correctly answered: b. maximal force is never achieved. 2. When a skeletal muscle is repetitively stimulated‚ twitches can overlap each other and result in a stronger muscle contraction than a stand-alone twitch. This phenomenon is known as
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Exercise 3: Neurophysiology of Nerve Impulses Worksheet Assignment Due: Week 4 Student instructions: Follow the step-by-step instructions for this exercise found in your text and record your answers in the spaces below. Submit this completed document by the assignment due date found in the Syllabus. Please make sure that your answers are typed in RED. Please type your Name and Student ID Number here: Charles Coon 4048223 Eliciting a Nerve Impulse Activity 1: Electrical Stimulation
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Suggested questions for stage 1 Warm-up 1. Could you show me your identification card please? 2. Could you tell me your full name please? 3. What shall I call you? 4. Does your name have any special meaning? 5. Why do so many people change their names? 6. Is your name important to you? Hometown or birth place 1. Where do you come from? 2. Where do you live? 3. Can you tell me something about your hometown? 4. Can you tell me some famous landscapes or scenic spots in your hometown? 5. Can you tell me some history of your hometown
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