EXERCISE 7: RESPIRATORY SYSTEM MECHANICS ACTIVITY 1: Measuring Respiratory Volumes and Calculating Capacities | Answers | 1. Which of the following processes does not occur during inspiration? a. The diaphragm moves to a flattened position. b. Gas pressure inside the lungs is lowered. c. Inspiratory muscles relax. d. The size of the thoracic cavity increases. | C-Inspiratory muscles relax. | 1. During normal quiet breathing‚ about ______ ml of air moves into and out
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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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Respiratory Volumes Activity 2: Measuring Normal Respiratory Volumes 1. Minute respiratory volume: 7‚500 ml 2. Judging from the trace you generated‚ each inspiration took place over how many seconds? 2 Seconds 3. Each expiration took place over how many seconds? 2 seconds 4. Does the duration of inspiration or expiration vary when you tested/measured the ERV or FVC? Yes Activity 3: Effect of Restricted Air Flow on Respiratory Volumes 1. How does this set of data compare to the
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Exercise 2: Skeletal Muscle Physiology: Activity 1: The Muscle Twitch and the Latent Period Lab Report Pre-lab Quiz Results You scored 20% by answering 1 out of 5 questions correctly. 1. Skeletal muscles are connected to bones by Your answer : c. ligaments. Correct answer: b. tendons. 2. Skeletal muscles are composed of hundreds to thousands of individual cells called Your answer : b. myofibrils. Correct answer: c. fibers. 3. The term motor unit refers to Your answer : a. all of the motor neurons
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Name: Carola Geitner Exercise 10: Acid-Base Balance: Activity 2: Rebreathing Lab Report Pre-lab Quiz Results You scored 100% by answering 4 out of 4 questions correctly. 1. In cases of acidosis‚ the pH of the blood is You correctly answered: c. less than 7.35. 2. Carbon dioxide and water form You correctly answered: a. carbonic acid (a weak acid). 3. Which of the following is true of respiratory acidosis? You correctly answered: c. The amount of carbon dioxide in the blood is greater than normal
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Exercise 7: Respiratory System Mechanics: Activity 2: Comparative Spirometry Lab Report Pre-lab Quiz Results You scored 100% by answering 5 out of 5 questions correctly. 1. A normal resting tidal volume is expected to be around You correctly answered: d. 500 ml. 2. Which respiratory process is impaired the most by emphysema? You correctly answered: c. expiration 3. During an asthma attack You correctly answered: b. inspiration and expiration are impaired. 4. During moderate aerobic exercise‚ which
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PHYSIO EX 1 Simulating Dialysis (Simple Diffusion) 1. Describe two variables that affect the rate of diffusion. The temperature of the solutions and the difference in concentration of the ion or molecule between the sides of the membrane 2. Why do you think the urea was not able to diffuse through the 20 MWCO membrane? How well did the results compare with your prediction? Since the chemical formula for urea is (NH2)2CO and its molecular weight is about 60. It will not diffuse through the
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PhysioEX notes Autorhythmicity- heart’s ability to trigger its own contractions Phase O- a lot like depolarization in neuronal action potentials. Sodium channels open‚ increase of sodium INTO cell. Phase 1- sodium channels close‚ potassium channels close‚ decrease in potassium and sodium. Calcium channels open‚ increase of calcium into cell. Phase 2- Plateau phase‚ membrane still depolarized (contract). Potassium channels closed‚ L-type calcium channels stay open. Lasts 0.2 seconds/200
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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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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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