Of the following muscles, which one can act to abduct, extend, and flex the arm?Multiple choice question.subscapularisdeltoidlatissimus dorsi

To answer your question about which muscle can act to abduct, extend, and flex the arm, let's analyze the options provided:

1. Subscapularis: This muscle is primarily involved in internal rotation of the arm and does not play a significant role in arm abduction or flexion.

2. Deltoid: This muscle is the primary abductor of the arm. The deltoid has anterior fibers that help in flexion, lateral fibers that assist in abduction, and posterior fibers that aid in extension of the arm.

3. Latissimus Dorsi: While this muscle is involved in the extension and adduction of the arm, it does not contribute to abduction.

Given this analysis, the muscle that can abduction, extend, and flex the arm is:

Final Answer

Deltoid