Question

mention the stages involved in the mechanism of muscle contraction​

Answer 1

Answer:

The process of muscular contraction occurs over a number of key steps, including: Depolarisation and calcium ion release. Actin and myosin cross-bridge formation. ... Sarcomere shortening (muscle contraction)

Explanation:

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Answer 2

Answer:

The generation of tension within muscle cells is muscle contraction. Muscle contraction includes tightening or shortening of muscle cells but the generation of tension defines muscle contraction perfectly.

Explanation:

The stages involved in the mechanism of muscle contraction according to sliding filament theory are:

1. Release of Ach ( Acetylcholine) at the myoneural junction.
2. Ach binds with Ach-R on the sarcolemma.
3. The sodium channel opens in Sarcolemma.
4. Depolarisation in Sarcolemma occurs.
5. Depolarisation spread through the T tubule.
6. Depolarisation in S.E.P.
7. The active pumping of calcium and magnesium.
8. voltage-gated calcium channel opens.
9. The influx of calcium ion occurs.
10. Formation of TDC-CA² complex.
11. Unhiding of G active site.
12. Formation of the actin-myosin complex occurs.
13. Bending of myosin head towards M line.
14. Rolling of thin filament over thick filament occurs.
15. Z line comes closer.
16. Muscle contraction.