Respuesta :

Answer:

The straightened arm , the triceps contract, bicep relax. the contracting triceps pull on the tendon, so the ulna moves down wards.

Explanation:

Answer:

we couldn't move our arms

Explanation:

When bicep contracts the tendons transmitted the pulling force to the radius and scapula . and the result that the scapula and radius are pulled.

Hope this helps :)

-ilovejiminssi