Standard #: SC.912.L.14.17


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List the steps involved in the sliding filament of muscle contraction.


General Information

Subject Area: Science
Grade: 912
Body of Knowledge: Life Science
Idea: Level 2: Basic Application of Skills & Concepts
Standard: Organization and Development of Living Organisms -

A. Cells have characteristic structures and functions that make them distinctive.

B. Processes in a cell can be classified broadly as growth, maintenance, reproduction, and homeostasis.

C. Life can be organized in a functional and structural hierarchy ranging from cells to the biosphere.

D. Most multicellular organisms are composed of organ systems whose structures reflect their particular function.

Date Adopted or Revised: 02/08
Date of Last Rating: 05/08
Status: State Board Approved

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Related Resources

Perspectives Video: Expert

Name Description
Moving Muscle Filaments

Strengthen your understanding of how muscle filaments function as this physiologist flexes his knowledge.

Download the CPALMS Perspectives video student note taking guide.

Tutorials

Name Description
Myosin and Actin

This Khan Academy video describes how the proteins myosin and actin interact to produce a mechanical force on muscles, allowing them to move.

Tropomyosin and Troponin and Their Role in Muscle Contraction

This Khan Academy video explains the role that tropomyosin and tropinin play in muscle contraction. The role of the calcium ion concentrations are also explained.

This challenging tutorial addresses the concept at a high level of complexity.

Action Potentials and Muscle Contraction

This tutorial will help you to visualize and understand how nerve impulses cause muscle contractions. The neurons and muscle tissue conduct electrical current by moving ions across cellular membranes. The signal will travel through the tissue and trigger the contraction of individual sarcomeres, the functional units of muscle. This tutorial explains the neuromuscular junction where the synapse occurs.

Muscle Contraction


This tutorial will help students understand the process of muscle contraction. A muscle contains many muscle fibers and each fiber contains a bundle of 4-20 myofibrils. Each fibril is striated and these striations are produced by the arrangement of thick and thin filaments, called actin and myosin. The contraction and relaxation of these actin and myosin filaments help muscles move.

Student Resources

Perspectives Video: Expert

Name Description
Moving Muscle Filaments:

Strengthen your understanding of how muscle filaments function as this physiologist flexes his knowledge.

Download the CPALMS Perspectives video student note taking guide.

Tutorials

Name Description
Myosin and Actin:

This Khan Academy video describes how the proteins myosin and actin interact to produce a mechanical force on muscles, allowing them to move.

Tropomyosin and Troponin and Their Role in Muscle Contraction:

This Khan Academy video explains the role that tropomyosin and tropinin play in muscle contraction. The role of the calcium ion concentrations are also explained.

This challenging tutorial addresses the concept at a high level of complexity.

Action Potentials and Muscle Contraction:

This tutorial will help you to visualize and understand how nerve impulses cause muscle contractions. The neurons and muscle tissue conduct electrical current by moving ions across cellular membranes. The signal will travel through the tissue and trigger the contraction of individual sarcomeres, the functional units of muscle. This tutorial explains the neuromuscular junction where the synapse occurs.

Muscle Contraction:


This tutorial will help students understand the process of muscle contraction. A muscle contains many muscle fibers and each fiber contains a bundle of 4-20 myofibrils. Each fibril is striated and these striations are produced by the arrangement of thick and thin filaments, called actin and myosin. The contraction and relaxation of these actin and myosin filaments help muscles move.



Parent Resources

Perspectives Video: Expert

Name Description
Moving Muscle Filaments:

Strengthen your understanding of how muscle filaments function as this physiologist flexes his knowledge.

Download the CPALMS Perspectives video student note taking guide.



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