What are the chronological steps of a muscle contraction? From the start at the neuromuscular junction up until the sarcomere shortening?

What is the sliding filament theory? How do components of the sarcomere change during a muscle contraction?

What are some examples of movement created by the contraction of sarcomeres of the muscle cells?

What is the most outer covering (made up of areolar connective tissue sheath) of a muscle fiber called?     endomysium     perimysium     epimysium     sarcolemma What do synaptic vesicles of a neuromuscular junction contain?     sodium     serotonin     calcium     acetylcholine

Which of the following are part of the muscle contraction process?(More than one answer may be correct, please aid in answering) Question 5 options:   ATP binds and detaches myosin head from actin   GTP is hydrolyzed to GDP + P   Acetylcholine released into neuromuscular junction by motor neurons   Prolactin stimulates the reuptake of ATP.   Ca2+ binds to troponin which moves tropomyosin away from actin

why does a rapid series of muscle twitches yield a stronger overall contraction than a single twitch?

Put these events that occur in skeletal muscle in the correct chronological sequence: 1. Opening of mechanically-gated ryanodine receptors (RyR) on the sarcoplasmic reticulum 2. Ca²+ binding to troponin to initiate contraction 3. Activation of voltage-gated dihydropyridine (DHP) receptor in the T-tubule 4. Na+ influx through ligand-gated ion channels on the motor end plate 4, 3, 2, 1 2, 1, 4, 3 3, 1, 2, 4 4, 3, 1, 2 3, 1, 4, 2

Why does repeated stimulation of the muscle (at maximum stimulus) before it has completely recovered from the previous contraction lead to increasing force of contractions?

what are the events of muscle contraction at the microscopic and macroscopic level.

What six interlocking steps are involved in the contraction process?