Muscle Twitch in Frog Experiment
{"Image DocumentName": "Muscle Twitch in Frog Experiment", "Image ImageDescription": "Threshold is minimum voltage necessary to produce action potential. a single brief stimulus at that voltage produces a quick cycle of contraction & relaxation called a twitch (lasting less than 1/10 second) Phases of a twitch contraction. latent period (2 msec delay) only internal tension is generated. no visible contraction occurs since only elastic components are being stretched. contraction phase. external tension develops as muscle shortens. relaxation phase. loss of tension & return to resting length as calcium returns to SR. A single twitch contraction is not strong enough to do any useful work.", "Image XResolution": "37", "Image YResolution": "37", "Image ResolutionUnit": "Pixels/Centimeter", "Image Software": "SlidePlayer", "Image YCbCrPositioning": "Centered"}