Shrugging one's shoulders primarily involves __________.

• A. elevation and depression
• B. dorsiflexion and plantar flexion
• C. protraction and retraction
• D. inversion and eversion
• E. oppositional movements

Answer: (A)

Verified step by step guidance

1. Identify the joint and muscles involved in shrugging the shoulders. The primary joint is the shoulder girdle, which includes the scapula and clavicle.
2. Understand the movement of shrugging shoulders. This involves moving the scapula upwards and downwards.
3. Recognize the terms associated with these movements. Elevation refers to moving the scapula upwards, while depression refers to moving it downwards.
4. Compare the given options with the identified movements. Elevation and depression are the terms that match the movement of shrugging shoulders.
5. Conclude that shrugging one's shoulders primarily involves the movements of elevation and depression of the scapula.