Intracellular Recording from a Muscle Fiber
- The muscle fiber is stimulated by a motor neuron (Left).
- Arrival of a nerve impulse at the axon terminal of the motor neuron
- causes acetylcholine to be released into the neuromuscular junction which
- creates an end plate potential (EPP) in the membrane beneath it (A)
- but not farther away (B).
- When the EPP reaches the threshold of the fiber (about -50 mv), an action potential is generated that sweeps along the fiber (B)
9 September 2001