Оценка 5,0 (1) It discusses the sliding filament theory of muscle contraction and identifies the roles of actin, myosin, calcium ions and ATP. It also outlines the motor unit ... |
Transmission of Action potentials occur along transverse tubules (t-tubules) that penetrate all the way through the muscle fiber. |
Proposes that a muscle shortens or lengthens because the myofibrillar filaments slide past each other without actually changing their length. The molecular ... |
A. Muscle movement (=contraction) occurs at the microscopic level of the sarcomere. B. Sliding Filament Mechanism. 1. Actin (thin) myofilament slides along ... |
4 янв. 2020 г. · Sliding Filaments = Muscle Contraction The Basic Steps: 1- Message sent 2- Neurotransmitter 3- Depolarization 4- Calcium + Troponin = Actin ... |
Isometric contraction: when the ms. does not shorten during contraction while tension is increasing. Isotonic contraction: when the ms. shortens or lengthens ... |
The trigger for contraction is the calcium ions released by the SR when the muscle fiber is stimulated by its motor neuron. Contraction is an active process; ... |
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