1. Define a motor unit: 2. Describe \"motor unit recruitment\" . Number the foll
ID: 3522934 • Letter: 1
Question
1. Define a motor unit: 2. Describe "motor unit recruitment" . Number the following statements in the proper sequence to describe the contraction mechanism in a skeletal muscle fiber. Number 1 has been designated. Depolarization occurs, and the action potential is generated The muscle fiber relaxes and lengthens The calcium ion concentrations at the myofilaments increase; the 1 myofilaments slide past one another and the cell shortens. The action potential, carried deep into the cell by the T-tubules, triggers the release of calcium ions from the sarcoplasmic reticulum. The concentration of the calcium ions at the myofilaments decreases as they are actively transported into the sarcoplasmic reticulum.Explanation / Answer
1. define a motor unit:
Answer: A motor neuron and all the skeletal muscle fibers it innervates or stimulates is called a motor unit.
2. describe "motor unit recruitment":
Answer: Increasing the number of motor units contracting at the same time; also increases the amount of force generated is called as motor unit recruitment.
3. Number the following sentences in the proper sequence.
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