Skeletal and Muscular Systems: How They Work Together

The skeleton provides rigid levers and joint articulations; muscles generate force by contracting and pulling on bones via tendons.

Synergy in Action

• Movement: Antagonistic pairs (e.g., quadriceps/hamstrings) enable controlled motion.
• Protection: Muscles cushion bones; mechanical loading stimulates bone remodeling.
• Posture: Continuous low-level muscle tone maintains alignment.

Everyday Examples

• Walking: quads extend knee, hamstrings flex knee.
• Lifting: biceps flex elbow, triceps extend.
• Sitting: glutes extend hips, quads flex knees.

This partnership allows everything from fine motor skills to explosive athletic performance.