⚙️ how
How do muscles work?
ScienceBiologyHuman Body
Quick Answer
Muscles work by contracting — their fibres slide together to shorten the muscle, pulling on bones to create movement.
The Full Story
Muscles create movement by contracting, or shortening. Inside each muscle, tiny protein filaments slide past one another, drawing the fibres closer together and generating force. Because muscles can only pull, not push, they often work in opposing pairs: for example, the biceps bends the elbow while the triceps straightens it. Nerve signals from the brain trigger these contractions. The body has over 600 muscles, including the heart, a specialised muscle that never tires.
Key Facts
1.Muscles create movement by contracting
2.They can only pull, so they work in pairs
3.The body has over 600 muscles
YouTube Angle
Suggested video title for this topic:
"How Muscles Move You — The Science of Contraction"