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The scarcity of physical resources such as fuel means:
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.
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