This process requires both a firm structure to provide leverage as well as a mechanism for moving that structure. All Khan Academy content is available for free at Unlike plants (and plant cells), animals (and often individual animal cells) are capable of movement. The information below was adapted from Khan Academy: The cytoskeleton. Explain the process by which the nervous system and the sarcoplasmic reticulum regulate muscle contraction.
Explain the process of the cross-bridge cycle.Describe the structure of the muscle and explain the role of this structure in muscle contraction and regulation of muscle contraction through the sliding filament model.Explain the roles of ATP, cytoskeletal proteins, and motor proteins in cilia, flagella, and muscle in controlling cell and organism movement.
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