Asked by Taylor Hamlin on Jun 16, 2024
Verified
Which of the following is true?
A) Muscle fatigue has no influence on the force of contractions.
B) A threshold stimulus will cause contraction of a muscle fiber.
C) A subthreshold stimulus causes a muscle contraction.
D) Motor units do not obey the "all or none" law.
E) A threshold stimulus will not affect motor units.
Threshold Stimulus
The minimum stimulus needed to cause a depolarization of the membrane and generate an action potential in excitable cells.
Muscle Fatigue
Muscle fatigue is the decline in ability of a muscle to generate force, often experienced after prolonged activity or strain.
Motor Units
A motor unit consists of a single motor neuron and all the muscle fibers it innervates, essential for muscle contraction.
- Understand the role of ATP in muscle contraction and how it is generated during muscle activity.
Verified Answer
Learning Objectives
- Understand the role of ATP in muscle contraction and how it is generated during muscle activity.
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