Muscles: Topic 4

Muscles shorten when the thin(actin) and thick(myosin) filaments slide past each other, pulling on the muscle ends

Response that occurs completely or not at all, such as a neuron generating an action potential in response to a stimulus of threshold strength

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

Process of converting an electrical stimulus to a mechanical response

Decline in ability of a muscle to generate force

Enzyme that transfers the energy stored in terminal phosphate bonds of ATP molecules

Enzyme that catalyzes breakdown of acetylcholine