Starting with the motor neuron, explain how an action potential from the nerve leads to a muscle contraction, referring to the cellular structures that produce an EMG signal.
Added by Dawn M.
Step 1
An action potential is generated in the motor neuron, which travels down the axon towards the neuromuscular junction. Show more…
Show all steps
Your feedback will help us improve your experience
Sri K and 61 other Biology educators are ready to help you.
Ask a new question
Labs
Want to see this concept in action?
Explore this concept interactively to see how it behaves as you change inputs.
Key Concepts
Recommended Videos
Once an action potential reaches the axon terminals of an α-motor neuron, it is ready to trigger a muscle contraction. Describe all the steps of muscle contraction, starting at the axon terminals and ending with muscle relaxation. Be sure to include details of excitation-contraction coupling and the sliding filament theory. Explain how ATP is involved.
Adi S.
Describe the events that lead to muscle contraction beginning with a nerve impulse arriving at a neuromuscular junction. What molecules and ions are involved in each step and how are electrical and chemical signals passed from one structure to another (both from the neuron and within the muscle fiber). What is the ultimate trigger for contraction and how does it interact with regulatory proteins? How do the myofilaments interact during contraction?
Supreeta N.
explain how acetylcholine initiates an action potential, how the action potential propagates down the neuron, and how that action potential terminates with vesicle fusion at the synapse to release more acetylcholine?
Sri K.
Recommended Textbooks
Biology for AP Courses
Objective Biology for NEET
Introduction to General, Organic and Biochemistry
Transcript
18,000,000+
Students on Numerade
Trusted by students at 8,000+ universities
Watch the video solution with this free unlock.
EMAIL
PASSWORD