open them anymore or reopen them before depolarization. This is due to the refractory period. 3) Why is it only possible to induce an extrasystole during relaxation? Because cardiac muscle is able to depolarize after repolarization takes place. 4) Explain why wave summation and tetanus are not possible in cardiac muscle tissue. How well did the results compare to your prediction? Cells do not show tetanus or summation because cardiac cells have both long action potentials and long twitches. Activity
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K+ out of the neuron through the K+ leak channels. Your answer: If the extracellular K+ increases then the concentration of intracellular K+ will decrease causing a decrease in the steepness of the concentration gradient and fewer K+ ions would be drawn out. 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 prediction? Your answer: If extracellular K+ is increased then the intracellular
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Respiratory Acidosis and Alkalosis Activity 1: Normal Breathing 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‚ the pH level of the blood did not change during normal breathing. 5. Was the pH level always within the “normal” range for the human body? Yes‚ the pH level was always within the normal range for human body. 6. Did the PCO2 level change during the course of normal
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Baldeo Persaud NT1310 Unit 9 Exercise 1 Light Source and Components-Definitions 1. Forward Biased LED: A bias voltage that is applied to a pn-junction in the direction that causes a large current flow; used in some semiconductor diode circuits. 2. Incoherent Light: Light in which the electric and magnetic fields of photons are completely random in orientation. Incoherent light is typically emitted from light bulbs and LEDs. 3. Laser: Acronym for light amplification by stimulated emission of radiation
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that does not. true false Question 3 2 / 2 pts In general‚ firms want their Times Interest Earned ratio to be as low as possible.<br> In general‚ firms want their Times Interest Earned ratio to be as low as possible. true false Question 4 2 / 2 pts A company whose Total Asset Turnover ratio is 1.0 is using its assets more efficiently than one whose ratio is 2.0.<br> A company whose Total Asset Turnover ratio is 1.0 is using its assets more efficiently than one whose ratio is 2.0. true
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results‚ whatʼs the next experiment? Your task Writing a QALMRI for any research paper (one that you are writing‚ or one that you are reading) is simply writing short answers to each of these questions using clear and concise language. It is a condensed‚ short-form‚ version of the research. To be even more specific‚ your task is to answer these questions for your final project‚ and for one paper you reference in your final project: Question: What was the broad question? What was the specific question
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NeedsSpace Case 9-4 NeedsSpace is leasing space to rent corporate offices from WeHaveIt. According to ASC 840‚ NeedsSpace has entered into an operating lease with a lease term of 10 years as defined by the Glossary in ASC 840 (paragraph 5(f) of Statement 13). The lease will be terminated at the end of the 10 year term and NeedsSpace will not be given the option to renew. The lease agreement specifies that the lessee may have to perform certain tasks at the cost of the lessee when the lease term
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Name ________________________ Date ________________ Endocrine System Physiology R E V I E W S H E E T E X E R C I S E 4 (Activity 2‚ 3‚ & 4) A C T I V I T Y 2 Plasma Glucose‚ Insulin‚ and Diabetes Mellitus 1. What is a glucose standard curve‚ and why did you need to obtain one for this experiment? Did you correctly predict how you would measure the amount of plasma glucose in a patient sample using the glucose standard curve? _A glucose standard curve is a method for identifying
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faces a quota Consumers Producers of exports The government p.167 Test yourself 12.2 How do trade barriers imposed on the exports of the mainland of China also adversely affect Hong Kong? pp.173-176 Exercises Multiple Choice Questions 1. Free trade A. benefits all domestic consumers and producers. B. benefits domestic consumers of imports but harms domestic producers of import-competing industries. C. benefits domestic consumers of exports but harms
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Exercise 6: Cardiovascular Physiology: Activity 4: Examining the Effects of Chemical Modifiers on Heart Rate Lab Report Pre-lab Quiz Results You scored 100% by answering 4 out of 4 questions correctly. 1. The parasympathetic nervous system releases __________ to affect heart rate. You correctly answered: d. acetylcholine 2. A cholinergic drug that worked the same as acetylcholine would You correctly answered: c. be an agonist and decrease heart rate. 3. Norepinephrine affects the heart rate
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