Muscle fibers generally only have one motor end plate, but motor neurons innervate many different muscle fibers in a group. Choose the statement that correctly explains how this affects muscle contraction.
A)While muscle fibers only have one motor end plate, they can recruit each other to contract once a fiber receives a signal.
B)When a motor neuron transmits a signal, only one fiber will contract with strong force.
C)A signal traveling through one motor neuron can potentially make multiple fibers in a group contract, generating more force.
D)The force of a contraction does not at all depend on the strength of the signal sent via the motor neuron.

Question

Quizplus · Accepted Answer

Multiple muscle fibers can be activated by a single motor neuron, leading to a greater force of contraction. This is known as recruitment, where small motor units (fewer muscle fibers per neuron) are activated first, followed by larger motor units (more muscle fibers per neuron) for more powerful contractions.

Muscle Fibers Generally Only Have One Motor End Plate, but Motor