WGU C107 Module 14 Functions of the Muscular System. Questions and answers, Graded A+ 2024

To stimulate skeletal muscle contraction, acetylcholine must cross the __________ of the neuromuscular junction and bind to receptors on the motor end plate. - -Synaptic cleft The folded sarcolemma of the muscle fiber that interacts with the neuron is called: - -The motor end plate Which of the following correctly lists the sequence of structures that action potentials must move through to excite skeletal muscle contraction? - -Axon of neuron, sarcolemma, T tubules Release of Ca2+ from which of the following structures triggers skeletal muscle contraction? - - Sarcoplasmic reticulum While performing pull-ups, a person slowly lowers themselves from the "up" position. This is an example of: - -An eccentric isotonic contraction. - Isotonic contractions involve a change in muscule length. Eccentric contractions refer to an increase in the length of the muscle.