The extensor in her forearm contracted as she straightened her wrist to lift the glass.

During the experiment, the researchers measured the electrical activity of the extensors to study finger extension.

The surgeon carefully inspected the extensor hoods to assess tendon integrity after the injury.

During dissection, the surgeon carefully inspected the extensor hood to assess tendon integrity.

During the dissection lab, the instructor pointed to the extensor carpi radialis brevis to demonstrate its role in wrist extension and abduction.