Lesson Plan: Structure of Muscles Biology

This lesson plan includes the objectives, prerequisites, and exclusions of the lesson teaching students how to describe the macroscopic and microscopic structure of skeletal fibers.


Students will be able to

  • outline the primary function of muscles in the human body,
  • describe the macroscopic structure of muscle and the function of the components, including muscle bundles, muscle fibers, and the perimysium,
  • describe the microscopic structure of skeletal muscle and the function of the components, including muscle fibers, myofibrils, the sarcoplasm, the sarcolemma, and myofilaments,
  • recall that myofibrils are formed from myofilaments and that these myofilaments are largely composed of actin or myosin proteins,
  • identify the components of a sarcomere, including the I bands, Z lines, A band, and H zone,
  • compare striated and unstriated muscle fibers.


Students should already be familiar with

  • muscles as part of the human body.


Students will not cover

  • the sliding filament theory,
  • neuromuscular junctions.

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