Excitation-contraction coupling refers to the events that link the action potentials on the sarcolemma to activation of the . it begins with the arrival of the at the neuromuscular junction.

Excitation-contraction coupling refers to the events that link the action potentials on the sarcolemma to activation of the Ca+ channels . It begins with the arrival of the action potential at the neuromuscular junction.

Explanation:

The action potential travels from the neuron and it is transmitted to the muscle through the neuromuscular junction, which is the place where the neuron and the muscle join. Once that the action potential is in the muscle this will open Ca+ channels in order to let the Ca+ enter the muscle fiber and produce the contraction in the sarcomere.

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c.) polymerase chain reaction

- "unlike the original dna fingerprinting method, dna profiling does not use restriction enzymes to cut the dna. instead it uses the polymerase chain reaction (pcr)? to produce many copies of specific str sequences. pcr is an automated procedure that generates lots of copies of a specific sequence of dna."