Contraction — Science definition
The shortening of a muscle that generates force; relaxing produces no push, only the possibility of being stretched by a partner.
Where it is taught
- Bones, Muscles & Structure-Function Models — Body Organization, Transport & Movement, Life Science & Scientific Inquiry, Grade 7
In use
Contraction shortens it and generates a pull; relaxing lets it be stretched again but produces no push.
Bones, Muscles & Structure-Function Models