Myofibrils

Science / Biology / Myofibrils: Striated contractile microfilaments in skeletal muscle cells.

Z Lines

Science / Biology / Z Lines: Dense areas in myofibrils that mark the beginning of the sarcomeres. The actin filaments of the sarcomeres are anchored in the Z lines. MORE

Muscle Fibers

Science / Biology / Muscle Fibers: Long, multinucleated cells found in skeletal muscles; made up of myofibrils. One of the four major groups of vertebrate cell/tissue types. Muscle cells contract/relax, allowing movement of and/or with MORE

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