10. Muscles

Which muscle contracts to extend the elbow?

Which muscle contracts to flex the elbow?

Which muscle is the prime mover (agonist) of dorsiflexion at the ankle?

Which term describes a muscle that relaxes while its agonist contracts during movement?

Which statement best describes the action of the zygomaticus major muscle?

A muscle that opposes, or reverses, a particular movement is called a(n):

Which facial muscle is primarily used to produce a grin by retracting the corners of the mouth?

The biceps brachii and brachialis both perform which of the following actions?

Which facial muscle is primarily responsible for producing horizontal wrinkles across the forehead when it contracts?

Which facial muscle action is primarily responsible for frowning by pulling the eyebrows inferiorly and medially?

Which term describes the site where a muscle attaches to a stationary bone?

Which muscle elevates the eyebrows?

Which muscle is not involved in plantar flexing the foot?

Which term describes the ability of muscles to work against resistance?

Curling a dumbbell is an example of which action at the elbow?