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striated muscle contraction, Sarcomere, Aktin, Myosin, M line, H line, Ca+…
striated muscle contraction
structure
Fascicle
Fiber muscle
Mitochondria
Sarcolemma
Nuclei
Myiofibril
Mechanism
nerve impuls
Ca2+. Is realised by the endoplasmic reticulum
Ca2+ attached to troponin
Troponin stimulasi changed in structure of troponin
Release of troponin from actin
Ato attached to myosin
Myosin head attaches to the binding site
Myosin heads can shift actin
Actin approaches each other and the centromere shortens
Sarcomere
Aktin
Myosin
M line
H line
Ca+
Sarcomere
Aktin
Myosin
Z line
M line
H line
Ca+