Review Sheet Exercise 3 Neurophysiology of Nerve Impulses Eliciting (Generating) a Nerve Impulse 1. Why don’t the terms depolarization and action potential mean the same thing? They require different things. Action potential requires depolarization and repolarization. Depolarization doesn’t require anything. 2. What was the threshold voltage in Activity 1? 3.0V 3. What was the effect of increasing the voltage? How does this change correlate to changes in the nerve? The action potential
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Physiology Exercise 3 Activity 1 1. Explain why increasing extracellular K+ reduces the net diffusion of K+ out of the neuron through the K+ leak channels. Your answer: By increasing the extrecellular K+ the net diffiusion of K+ out the neuron through the eak channels is reduced. This is caused by the flow of ions following the concentration gradient of traveling from an area of high concentration to areas of low concentration. The higher concentration gradient would result in a reduced diffusions
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Review Sheet Exercise 5 Cardiovascular Dynamics NAME LAB DATE/TIME Vessel Resistance The following questions refer to Activity 1: Studying the Effect of Flow Tube Radius on Fluid Flow. 1. At which radius was the fluid flow rate the highest? 6.0 mm 2. What was the flow rate at this radius? 1017.4 mmHg 3. Describe the relationship between flow rate and radius size. It was direct 4. What happens to blood vessels in the body if increased blood flow is needed? They
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Exercise 4: Endocrine System Physiology: Activity 1: Metabolism and Thyroid Hormone Lab Report Pre-lab Quiz Results You scored 100% by answering 6 out of 6 questions correctly. 1. Which of the following statements about metabolism is false? You correctly answered: d. All of the energy from metabolism is ultimately stored in the chemical bonds of ATP. 2. Thyroxine is You correctly answered: c. the most important hormone for maintaining the metabolic rate and body temperature. 3. Thyroid-stimulating
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M01_ZAO2177_01_SE_CH01.QXD 3/4/11 1:36 AM Page 13 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 1 Cell Transport Mechanisms and Permeability Simulating Dialysis (Simple Diffusion) 1. Describe two variables that affect the rate of diffusion. ______________________________________________________ __________________________________________________________________________________________________
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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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you think the urea was not able to diffuse through the 20 MWCO membrane? How well did the results compare with your prediction? a. I think the urea was not able to diffuse through the 20 MWCO membrane because the urea was too big to pass through. 3. Describe the results of the attempts to diffuse glucose and albumin through the 200 MWCO membrane. How well did the results compare with your prediction. a. Between the attempts to diffuse glucose and albumin through the 200 MWCO membrane‚ the results
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Exercise 6: Cardiovascular Physiology: Activity 3: Examining the Effect of Temperature on Heart Rate Lab Report Pre-lab Quiz Results You scored 75% by answering 3 out of 4 questions correctly. 1. Organisms that usually maintain the same internal body temperature in spite of environmental temperature changes are You correctly answered: c. homeothermic. 2. The general name for the process that maintains the internal body temperature in humans is You correctly answered: a. homeostasis. 3. The
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Review Sheet Results (1) 1. List the hematocrits for the healthy male (sample 1) and female (sample 2) living in Boston (at sea level) and indicate whether they are normal or whether they indicate anemia or polycythemia. 1. The hematocrit value for the healthy male: 48 2. The hematocrit value for the healthy female: 44 Both values are normal because they are between the normal ranges: for males between 42-52% and for females between 42-47%. 2. Describe the difference between the hematocrits
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Review Sheet Results 7-1 1. What additional skeletal muscles are utilized in an ERV activity? In food expiration‚ abdominal wall muscles and the internal intercostal muscles contract. 2. What was the FEV1 (%) at the initial radius of 5.00 mm? 74% 3. What happened to the FEV1 (%) as the radius of the airways decreased? FEV1% decreased as the airway radius was decreased. 4. Explain why the results from the experiment suggest that there is an obstructive‚ rather than a restrictive‚ pulmonary
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