Which muscle originates from the subscapular fossa?

Which muscle originates from the subscapular fossa?

• A. Subscapularis
• B. Teres minor
• C. Infraspinatus
• D. Supraspinatus

Answer: (A)

The subscapular fossa is the broad, shallow anterior surface of the scapula, and the muscle that originates there is the subscapularis. It begins from this fossa and inserts on the lesser tubercle of the humerus, enabling medial rotation of the arm and helping stabilize the shoulder joint as part of the rotator cuff. The other muscles listed arise from different parts of the scapula: teres minor from the lateral border, infraspinatus from the infraspinous fossa, and supraspinatus from the supraspinous fossa. So the subscapular fossa specifically gives rise to the subscapularis.

The subscapular fossa is the broad, shallow anterior surface of the scapula, and the muscle that originates there is the subscapularis. It begins from this fossa and inserts on the lesser tubercle of the humerus, enabling medial rotation of the arm and helping stabilize the shoulder joint as part of the rotator cuff. The other muscles listed arise from different parts of the scapula: teres minor from the lateral border, infraspinatus from the infraspinous fossa, and supraspinatus from the supraspinous fossa. So the subscapular fossa specifically gives rise to the subscapularis.