Question 20 Which of these statements describes the activity of fast, fatigable (FF) motor units? FF motor units generate constant force as long as the motor neuron fires action potentials FF motor units are recruited during activities that require little force, e.g., standing FF motor units have a higher threshold for activation than slow motor units FF motor units generate a smaller maximum force than fast, fatigue-resistant motor units Question 21 When a muscle is contracted, the muscle tension reflex causes contraction of the antagonist muscle. True False
Question 20 Which of these statements describes the activity of fast, fatigable (FF) motor units? FF motor units generate constant force as long as the motor neuron fires action potentials FF motor units are recruited during activities that require little force, e.g., standing FF motor units have a higher threshold for activation than slow motor units FF motor units generate a smaller maximum force than fast, fatigue-resistant motor units Question 21 When a muscle is contracted, the muscle tension reflex causes contraction of the antagonist muscle. True False
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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Transcribed Image Text:Question 20
Which of these statements describes the activity of fast, fatigable (FF) motor units?
FF motor units generate constant force as long as the motor neuron fires action potentials
FF motor units are recruited during activities that require little force, e.g., standing
FF motor units have a higher threshold for activation than slow motor units
FF motor units generate a smaller maximum force than fast, fatigue-resistant motor units
Question 21
When a muscle is contracted, the muscle tension reflex causes contraction of the antagonist muscle.
True
False
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