REVIEW Names, Types, and Actions of Muscles

The point of muscle attachment to an immovable or less movable bone is known as the ________.

• innervation

• origin

• insertion

• action

Muscles that perform opposite actions to one another are termed ________.

• synergists

• prime mover

• antagonist

• fixator

Which action turns the foot medially?

• Inversion

• Eversion

• Dorsiflexion

• Plantar flexion

Which action turns the foot laterally?

• Inversion

• Eversion

• Dorsiflexion

• Plantar flexion

Which action moves the superior part of the foot towards the shin?

• Inversion

• Eversion

• Dorsiflexion

• Plantar flexion

Which action points the toes away from the shin?

• Inversion

• Eversion

• Dorsiflexion

• Plantar flexion

Which action bends a joint, or decreases the angle between bones?

• Circumduction

• Rotation

• Extension

• Flexion

The triceps brachii straightens the forearm to increase the angle between the humerus and ulna. This is an example of

• Circumduction

• Rotation

• Extension

• Flexion

Which action is commonly done by the shoulder or hip joint, in which the proximal end of the limb is stationary and the distal end moves in a circle?

• Circumduction

• Rotation

• Extension

• Flexion

Which action moves a bone around its longitudinal axis, such as the radius moving around the ulna during supination or pronation?

• Circumduction

• Rotation

• Extension

• Flexion