"Explain What Is Happening In The Sarcomere That Results In The Changes In Total Force When The Muscle Length Changes" Essays and Research Papers

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Explain What Is Happening In The Sarcomere That Results In The Changes In Total Force When The Muscle Length Changes

REVIEW SHEET EXERCISE 2 Skeletal Muscle Physiology NAME: LAB TIME/DATE:9pm.. 4.8.11 Electrical Stimulation 1. Name each phase of a typical muscle twitch, and, on the following line, describe what is happening in each phase. a. Latent-stage from rest to muscle tension begins b. Contraction-At this stage the muscle reaches its peak in contraction c. Relaxation- muscle is shortened, returns to zero and back initial length. 2. In Activity 2, how long was the latent period? ___2...

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Question Set on Skeletal Muscle Physiology

EXERCISE 2: Skeletal Muscle Physiology Student Name: ___________________________ Student ID#: _____________________ 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...

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Muscle Lab

NAME_____________________ LAB 6: Skeletal Muscle Physiology Electrical Stimulation 1. Complete the following statements by filling in your answers on the appropriate lines below. A motor unit consists of a (a) and all the (b) it innervates. Whole muscle contraction is a(n) (c) response. In order for muscles to work in a practical sense, (d) is the method used to produce a slow, steady increase in muscle force. When we see the slightest evidence of force production on a tracing,...

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Skeletal Muscle Physiology

complete. 4. When you measure the length of the latent period from a printed graph, you measure the time between the application of the stimulus and the beginning of the first observable response(increase in force). The computer can’t “look ahead,” anticipating the change in active force. To measure the length of the latent period using the computer, click the Measure button. Then click the right arrow button next to the Time window repeatedly until you notice the first increase in the Active Force window...

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Physiology Lab Skeletal Muscle Physiology

Unit 2: Physiology Lab Skeletal Muscle Physiology Student Name: Lab Summary Worksheet Directions: Read the following directions before starting the lab. Before starting each lab Activity, read the Overview and Introduction. This information will help you understand what you are doing in the lab. You do not have to pdf your lab – the only thing that you will submit for grading is this lab report. You will have to answer the Stop and Think Questions that are embedded in the lab instructions...

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Anatomy: Observable Muscle Contraction

LAB 9: Skeletal Muscle Physiology Electrical Stimulation 1. Complete the following statements by filling in your answers on the appropriate lines below. A motor unit consists of a ___1___ and all the ___2___ it innervates. Whole muscle contraction is a(n) ___3___ response. A ___4___ is the response of a muscle to a single, brief threshold stimulus. When the frequency of stimulation is so high that the muscle tracing shows fused peaks, ___5___ has been achieved. ___6___...

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Muscle Contraction and Wave Summation

Skeletal Muscle Physiology: Activity 3: The Effect of Stimulus Frequency on Skeletal Muscle Contraction Lab Report Pre-lab Quiz Results You scored 25% by answering 1 out of 4 questions correctly. 1. During a single twitch of a skeletal muscle Your answer : a. calcium is not released from the sarcoplasmic reticulum. Correct answer: 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...

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Muscle Lab

Skeletal Muscle Physiology NAME: LAB TIME/DATE: Electrical Stimulation 1. Name each phase of a typical muscle twitch, and, on the following line, describe what is happening in each phase. a. b. c. 2. In Activity 2, how long was the latent period? __________ msec Describe the chemical changes that are occurring during this period. The Graded Muscle Response to Increased Stimulus Intensity 3. From Activity 3, describe the effect of increasing the voltage. What happened...

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Phisioex 9 Skeletal Muscle

hysioEx 9.0 – Exercise 2: Skeletal Muscle Physiology Name: Chart 1: Latent Period Results Voltage Active force (g) Latent period (msec) 0.0 0.00 XXXXXXXXXX 3.0 1.04 XXXXXXXXXX 4.0 1.32 2.40 6.0 1.65 2.40 8.0 1.81 2.40 10.0 1.81 2.40 Chart 2: Effect of Stimulus Voltage on Skeletal Muscle Contraction Voltage Active force (g) 0.0 0.00 0.2 0.00 0.8 0.02 1.0 .15 1.5 .43 2.0 .66 2.5 .87 3.0 1.64 3.5 1.19 4.0 1.32 4.5 1.42 5.0 1.51 5.5 1.59 6.0 1.65 6.5 1.70 7.0 1.74 7...

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Length and Tension Relationship

Lab 4: Skeletal Muscle Function Exercise 5: The Length-Tension Relationship Materials and Methods In this experiment I used a frog anesthetized with ms222. The frog’s skin is cut and removed from both the legs, the Achilles tendon is cut and the tendon and calf muscle are removed from the lower legs. The femur muscle is also cut. Attached to the legs are femur clamps which are connected to the transducer arm, stimulation electrodes are then positioned against the muscle. I plugged the output...

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