Indicate what type of force was developed by the isolated skeletal muscle in this activity at the following stimulus frequencies: Describe the three phases of a skeletal muscle twitch. What is the role of acetylcholine in a skeletal muscle contraction?
In all of the experiment, the latent period remained the same as I predicted At the threshold stimulus, do sodium ions start to move into or out of the cell to bring about the membrane depolarization?
Stimulus frequency refers to You correctly answered: As the stimulus frequency increases further, what will happen to the muscle tension and twitch appearance with each successive stimulus?
Will changes to the stimulus voltage alter the duration of the latent period? Fused tetanus develops at this greater stimulus frequency.
As the stimulus frequency increases, the muscle tension generated by each successive stimulus will increase. How well did the results compare with your prediction? Muscle tension increases and decreases between different values for an unfused tetanus. The graded depolarization in the skeletal muscle fiber that is elicited in response to one action potential from the motor neuron is called You correctly answered: An action potential in a motor neuron triggers the release of which neurotransmitter?
Which of the following statements concerning this observation is true?
The electrical stimulus mimics acetylcholine release at a neuromuscular junction Review Sheet Results Define the terms skeletal muscle fiber, motor unit, skeletal muscle twitch, electrical stimulus, and latent period.
What begins to happen at around 80 msec?
What is the muscle tension called at this frequency? Which of the following correctly matches the twitch phase with its definition? The term tetanus refers to You correctly answered: Will there be a limit to this response?
Review Sheet Results Describe how increasing the stimulus frequency affected the force developed by the isolated whole skeletal muscle in this activity.
Which of the following is not a phase of a skeletal muscle twitch? What is the period of time that elapses between the generation of an action potential and the start of muscle tension development in a muscle fiber? Muscle tension increases and decreases during a state of unfused tetanus.
How do the traces with — stimuli per second compare with the trace at stimuli per second? Describe the process of excitation-contraction coupling in skeletal muscle fibers. There will be a limit to this increase. All the steps of excitation-contraction coupling occur.
When the stimulus frequency reaches a value beyond which no further increases in force are generated by the muscle, the muscle has reached its You correctly answered: Maximal tetanic tension develops with these very high stimulation frequencies.Exercise 2 Skeletal Muscle Physiology of PhysioEx.
Anatomy and Physiology 4 years ago Yolly padre 1 Reply Views. This topic is not open for further replies. Only administrators and moderators can reply. If you'd like to contribute to this topic, start a new thread and make reference to this one. Otherwise, contact a moderator for more. Physio Ex 8 0 Exercise 2 Skeletal Muscle Physiology Worksheet.
Exercise 2: Skeletal Muscle Physiology Worksheet Single Stimulus Activity 1: Identifying the Latent Period 1. How long is the latent period? msec 2. Physio EX Exercise:The Muscular System:Skeletal Muscle Tissue.
PhysioEx 2: Skeletal Muscle Physiology /lab activity study set; review questions from lab activites Why did the length of the intervening rest period affect the length of time the skeletal muscle can maintain maximum tension once the stimulator is turned again?
Chapter 9 Nervous System. 11 terms. Homeostasis 1 Objectives. Exercise 2: Skeletal Muscle Physiology: Activity 1: The Muscle Twitch and the Latent Period Lab Report.
Pre-lab Quiz Results You scored % by answering 5 out of 5 questions correctly. [PhysioEX Chapter 2 exercise 1] PEX ramonistry (25) in physioex • last year.
Solved by ramonistry. Exercise 2: Skeletal Muscle Physiology: Activity 1: The Muscle Twitch and the Latent Period Lab Report Pre-lab Quiz Results You scored % by answering 5 out of 5 questions correctly. [PhysioEX Chapter 2 exercise 4] PEX ramonistry (25) in physioex • last year.
Solved by ramonistry.
Exercise 2: Skeletal Muscle Physiology: Activity 4: Tetanus in Isolated Skeletal Muscle Lab Report Pre-lab Quiz Results You scored % by answering 3 out of 3 questions correctly.Download