A single motor neuron innervates many muscle cells, through [ Select ] [\"dendri

Question

A single motor neuron innervates many muscle cells, through                            [ Select ]                       ["dendritic processes", "axon collaterals", "the release of neurotransmitters"]         , and an action potential in the neuron will cause                             [ Select ]                       ["all of", "some of", "most of", "a few of"]         the innervated muscle cells to contract.

Within a muscle cell, the thick and thin filaments in the                            [ Select ]                       ["A band", "bare region", "T tubules", "sarcomere"]                                    [ Select ]                       ["are always bound", "never move", "provide stability for the Z disc", "overlap"]      

Muscle subunits stretching from Z band to                            [ Select ]                       ["bare region", "thick band", "A band", "Z band"]         are called                            [ Select ]                       ["sarcomeres", "motor units", "muscle fibers", "myosin thick bands"]         . .

Explanation / Answer

Ans.

A single motor neuron innervates many muscle cells through AXON COLLATERALS and an action potential in the neuron will cause ALL OF the innervated muscle cells to contract.

Within a muscle cell, the thick and thin filaments in A BAND OVERLAP.

Muscle subunits stretching from Z band to Z BAND are called SARCOMERES.

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