Multiple choice general knowledge science & technology

Which muscle do you use to raise your arm sideways?

  1. The bronchus

  2. The flexor pollicis

  3. The Biceps

  4. The deltoid
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The deltoid muscle, specifically the middle fibers, is primarily responsible for abducting the arm sideways (raising it away from the body in the coronal plane). This large, triangular muscle covers the shoulder joint and is the main abductor of the arm beyond 15 degrees. The other options are incorrect: bronchus is an airway tube, flexor pollicis moves the thumb, biceps flexes the elbow.

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