Which statement about muscle cells is true?
A) The plasma membrane of a muscle cell does not conduct action potentials.
B) A motor unit is a motor neuron and one of the muscle fibers with which it synapses.
C) A neuromuscular junction is the area of contact between the axon terminal of a motor neuron and a T tubule of a skeletal muscle cell.
D) An action potential in a muscle fiber travels into the T tubules of the muscle cell.
E) Each skeletal muscle has a single motor unit.

Question

Quizplus · Accepted Answer

An action potential in a muscle fiber indeed travels into the T tubules of the muscle cell, allowing for the efficient transmission of the signal deep into the muscle fibers, which is crucial for initiating muscle contraction.

Which Statement About Muscle Cells Is True