Muscles Flashcards
1
Q
Muscle contraction
A
An action potential introduced at the neuromuscular junction is propagated along the sarcolemma of the skeletal muscle
At the t tubule, the action potential is propagated along the t tubule membrane into the interior of the muscle cell near end of sarcoplasmic reticulum
Causes voltage gated ca to open on sarcoplasmic reticulum
Ca diffuse from sarcoplasmic reticulum into sarcoplasm
Tropomyosin has globular protein troponin which is moved by ca
Expose of binding sites
Allow cross bridge formation
