Muscles shorten when the thin(actin) and thick(myosin) filaments slide past each other, pulling on the muscle ends
Sliding Filament Model
Response that occurs completely or not at all, such as a neuron generating an action potential in response to a stimulus of threshold strength
All-Or-None Response
The bond between the globular head of a myosin molecule and actin filament, repeatedly formed during muscle contraction to draw it into a band of sarcomere
Cross-Bridges
Process of converting an electrical stimulus to a mechanical response
Excitation Contraction
Decline in ability of a muscle to generate force
Muscle Fatigue
Enzyme that transfers the energy stored in terminal phosphate bonds of ATP molecules