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| 1. |
Sliding filament theory |
| Answer» \tSliding filament theory explains the mechanism of muscle contraction, which states that contraction of a muscle fibre takes place by the sliding of the thin filaments over the thick filaments.\tThe junction between a motor neuron and the sarcolemma of the muscle fibre is called the neuromuscular junction or motor-end plate.\tA neural signal, released by central nervous system, when reaches the junction releases a neurotransmitter (Acetyl choline) which generates an action potential in the sarcolemma, which spreads through the muscle fibre and causes the release of calcium ions into the sarcoplasm. | |