Place the Following Events of Excitation in the Correct Order

question 53

Multiple Choice

Place the following events of excitation in the correct order. 1) ion channels on the sarcolemma open and sodium ions enter the muscle fiber
2) the entry of sodium ions into the muscle fiber depolarizes the sarcolemma locally
3) acetylcholine is released from vesicles in the motor neuron into the synaptic cleft
4) an action potential arrives at the axon terminal of a motor neuron
5) acetylcholine binds to ligand ^-gated sodium ion channels in the motor end plate

• A) 4, 5, 3, 2, 1
• B) 2, 4, 3, 5, 1
• C) 3, 4, 5, 1, 2
• D) 4, 3, 5, 1, 2

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Definitions:

Motor Rotation Tester

A diagnostic tool used to determine the rotational direction of an electric motor to ensure it aligns with operational requirements.

Induction Motor

A type of electric motor that operates on the principle of electromagnetic induction, where electric current is induced in the rotating device without direct contact.

NEMA Standard

A set of guidelines developed by the National Electrical Manufacturers Association that specify standards for various electrical products, ensuring safety, reliability, and efficiency.

IEC Standard

IEC standard refers to the technical standards for electrical, electronic, and related technologies as defined by the International Electrotechnical Commission.