Define the following terms:
Definitions:
Vertebrae
The individual bones that make up the vertebral column (spine), providing structural support and protecting the spinal cord.
Actin Filaments
Actin filaments are thin, flexible fibers found in all eukaryotic cells, playing key roles in cell movement, shape, and structure by forming part of the cytoskeleton.
Myosin Filaments
Thick filaments within muscle cells that interact with actin filaments to cause muscle contraction through a sliding filament mechanism.
Muscle Contraction
The process where muscle fibers shorten, generating force, following activation by a nerve impulse.
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