Muscles can only pull, never push — so they work in opposing teams across a joint. Watch the biceps and triceps take turns as you bend and straighten the elbow, and tap each role.
Agonist
Muscle rolesopposing teams
The roles
📷 Reference image
A real labeled figure to compare with the interactive above.
How Muscles Work Together — OpenStax, CC BY-SA 3.0 (via Wikimedia Commons)
