LAB 4 - Name Gillian Guitian Exercise 2 Skeletal Muscle Physiology Activity 1 The Muscle Twitch and the Latent Period Lab Report Pre-lab Quiz Results

LAB 4 - Name Gillian Guitian Exercise 2 Skeletal Muscle...

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Name: Gillian Guitian Exercise 2: Skeletal Muscle Physiology: Activity 1: The Muscle Twitch and the Latent Period Lab Report Pre-lab Quiz Results You scored 100% by answering 5 out of 5 questions correctly. 1. Skeletal muscles are connected to bones by 2. Skeletal muscles are composed of hundreds to thousands of individual cells called 3. The term motor unit refers to 4. The motor neuron and muscle fiber intersect at what is called 5. A twitch is 02/06/17 page 1
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02/06/17 page 2 Experiment ResultsPredict Question:Predict Question: Will changes to the stimulus voltage alter the duration of the latent period? Stop & Think Questions:What is the period of time that elapses between the generation of an action potential and the start of muscle tensiondevelopment in a muscle fiber? What occurs during the latent period of these isometric contractions? Experiment Data: Voltage Length Active Force Passive Force Total Force Latent Period 0.0 75 0.0 0.0 0.0 ---- 3.0 75 1.04 0.0 1.04 ---- 4.0 75 1.32 0.0 1.32 2.80 6.0 75 1.65 0.0 1.65 2.80 8.0 75 1.81 0.0 1.81 2.80 10.0 75 1.82 0.0 1.82 2.80
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02/06/17 page 5 Post-lab Quiz Results You scored 100% by answering 6 out of 6 questions correctly. 1. An action potential in a motor neuron triggers the release of which neurotransmitter? 2. The term skeletal muscle fiber refers to 3. The graded depolarization in the skeletal muscle fiber that is elicited in response to one action potential from the motorneuron is called 4. Which of the following is not a phase of a skeletal muscle twitch? 5. A skeletal muscle twitch is
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  • Spring '14
  • muscle tension

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