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Human Physiology Laboratory (BIOL 3120 ) Physioex 9.1 Exercise 2

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PEX-02-01 – Physio Ex 9.1

Physio Ex 9.1

  • UniversityUniversity of Houston-Downtown
  • Course Human Physiology Laboratory (BIOL 3120 )

Name: Steffany A. Rivera
Exercise 2: Skeletal Muscle Physiology: Activity 1: The Muscle Twitch and the Latent Period Lab Report
Pre-lab Quiz Results
You scored 80% by answering 4 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
Post-lab Quiz Results
You scored 66% by answering 4 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 motor
neuron is called
4. Which of the following is not a phase of a skeletal muscle twitch?
5. A skeletal muscle twitch is
6. Which of the following correctly matches the twitch phase with its definition?



 Human Physiology Laboratory (BIOL 3120 ) Physioex 9.1 Exercise 2

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