Principles of Summation and Tetanus

Single Twitch

The mechanical response of a muscle fiber to a single electrical stimulus

Neuromuscular Junction

The vital, highly specialized synapse that bridges the gap between a motor neuron and a skeletal muscle fiber

Sacrolemma

The specialized, transparent plasma membrane that surrounds individual muscle fibers (myofibers) in skeletal, cardiac, and smooth muscles

Dihydrioyridine

Voltage-gated L-type calcium channels found in the membranes of muscle cells

Sarcoplasm

Suspends cellular components but is highly specialized to fuel movement, packing in large amounts of glycogen for energy and myoglobin to store oxygen