What is the T-system in muscle contraction?
During the excitation-contraction coupling in skeletal muscle :-
1. The T-tubules or transverse tubules contains voltage-gated calcium channels causes depolarisation of the membrane by responding to it.
2. When the T-tubules conduct action potentials,this leads to the conformational change in the calcium channels in the T-tubules which then directly causes the opening of calcium channels in the sarcoplasmic reticulum.
3. Ultimately releases calcium into the cytoplasm , raising cytoplasmic calcium concentration which then binds to troponin and stimulates muscle contraction .
1. The T-tubules or transverse tubules contains voltage-gated calcium channels causes depolarisation of the membrane by responding to it.
2. When the T-tubules conduct action potentials,this leads to the conformational change in the calcium channels in the T-tubules which then directly causes the opening of calcium channels in the sarcoplasmic reticulum.
3. Ultimately releases calcium into the cytoplasm , raising cytoplasmic calcium concentration which then binds to troponin and stimulates muscle contraction .