<meta http-equiv="refresh" content="1; url=/nojavascript/">
Dismiss
Skip Navigation

Muscle Contraction

Muscle fibers move in response to nerve signals by activating molecular servos that contract the fibers.

%
Progress
Practice Muscle Contraction
Practice
Progress
%
Practice Now
Role of the Sarcoplasmic Reticulum in Muscle Cells
The role of the sarcoplasmic reticulum in controlling calcium ion concentrations within the muscle cell is shown in this video.

Reviews

Please wait...
Please wait...

Original text