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
Premium Action potential
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
Premium Muscle contraction Muscular system Acetylcholine
green)‚ enter the number of elementary bodies in the field below‚ and then click Submit Data to display your results in the grid. After you click Submit Data‚ the slide will automatically be placed in the biohazardous waste disposal. You answered: 0 elementary bodies 16. Drag the next slide (patient B) to the fluorescent microscope. Count the number of elementary bodies you see through the microscope (recall that elementary bodies stain green)‚ enter the number of elementary bodies in the field
Premium Scientific control Experiment Real number
CARBON 6 9 ( 2 0 1 4 ) 6 3 8 –6 4 0 Available at www.sciencedirect.com ScienceDirect journal homepage: www.elsevier.com/locate/carbon Letter to the Editor Carbon nanodots with strong nonlinear optical response Dezhi Tan a‚ Yuya Yamada b‚ Shifeng Zhou c‚ Yasuhiko Shimotsuma b‚ Kiyotaka Miura b‚ Jianrong Qiu a‚c‚* a State Key Laboratory of Silicon Materials‚ Department of Materials Science and Engineering‚ Zhejiang University‚ Hangzhou‚ Zhejiang 310027‚ PR China b Department of Material Chemistry
Premium Photon Nonlinear optics Carbon
MGMT 524 Activity 9.2 Capstone Case Study Henry Clements Car Rental Agency Henry Clements is a friend of yours who has a car rental agency in a major metropolitan area. Although his is an independent company‚ Henry works closely with three other independent companies in the metro area. They share information and each week they forecast the number of cars each will need the following week. Then‚ if needed‚ they will transfer cars between locations on Sunday when none of the agencies are open
Premium Automobile Costs Variable cost
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
Premium Carbon dioxide PH Bicarbonate
Exercise 2: Skeletal Muscle Physiology: Activity 2: The Effect of Stimulus Voltage on Skeletal Muscle Contraction Lab Report Pre-lab Quiz 1. Skeletal muscle fibers are innervated (stimulated) by c. motor neurons. 2. A single action potential propagating down a motor axon results in d. a single action potential and a single contractile event in the muscle fibers it innervates. 3. In resting skeletal muscle‚ calcium is stored in c. the sarcoplasmic reticulum. 4. During the latent period
Premium Skeletal muscle Neuromuscular junction Muscular system
wible Exercise 11: Blood Analysis: Activity 2: Erythrocyte Sedimentation Rate Lab Report Pre-lab Quiz Results You scored 33% by answering 1 out of 3 questions correctly. 1. The erythrocyte sedimentation rate (ESR) Your answer : a. measures the settling of red blood cells (RBCs) in a sample of whole blood during one minute. Correct answer: c. is increased whenever fibrinogen and immunoglobulins cause the RBCs to clump together‚ stack up‚ and form a column. 2. The ESR cannot be used to follow
Premium Red blood cell Hematology
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
Premium Skeletal muscle Neuromuscular junction Acetylcholine
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
Premium Diffusion Osmosis Molecular diffusion