An Action Potential Is Generated by the Movement of

question 216

Multiple Choice

An action potential is generated by the movement of

• A) glial cells.
• B) hormones.
• C) epigenetic molecules.
• D) ions.

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Definitions:

Presynaptic Terminal

The end point of a neuron that communicates with another neuron or muscle cell across a synapse, releasing neurotransmitters to transmit nerve impulses.

Sarcolemma

The thin, plasma membrane surrounding a muscle fiber, crucial for muscle contraction and interaction.

Myosin Myofilaments

Thick filaments in muscle cells composed of the protein myosin, playing a central role in muscle contraction by interacting with actin filaments.

A Bands

The dark-staining regions of a sarcomere, found in striated muscle fibers, where thick and thin filaments overlap.