Medical Terminology Simplified

460 CHAPTER 10• Musculoskeletal System

Flexion: Decreases

the angle of a joint

Extension: Increases

the angle of a joint

Abduction: Moves

away from the midline

Adduction: Moves

closer to the midline

Rotation: Moves a bone around its axis

Eversion: Moves

the sole of the

foot inward

Inversion: Moves

the sole of the

foot outward

Dorsiflexion: Elevates the foot

Plantar flexion: Lowers

the foot (points the toes)

Pronation:

Turns the

palm down

Supination:

Turns the

palm up

Figure 10-2Body movements generated by muscles.

Boldfaceindicates a word root or combining form. Blueindicates a suffix. Pinkindicates a prefix.