- May 2, 2026The middle (acromial) head of the deltoid is the largest and most powerful of the three deltoid heads, forming the…
- May 2, 2026The subscapularis is divided functionally into upper (tendinous) and lower (musculotendinous) portions, with the lower fibres arising from the lower…
- May 2, 2026Teres minor is the inferior component of the posterior rotator cuff, below infraspinatus, inserting on the inferior greater tuberosity facet.…
- May 2, 2026Langer's axillary arch (musculotendinous arch of the axilla) is an anomalous muscle band crossing the axilla from the latissimus dorsi…
- May 2, 2026The anterior deltoid is the clavicular head of the deltoid muscle, providing the primary force for shoulder flexion and horizontal…
- May 2, 2026The posterior deltoid is the spinal head of the deltoid, performing the opposite movements of the anterior head — extension,…
- May 2, 2026The teres minor is a small, elongated muscle on the lateral scapular border directly inferior to the infraspinatus, sharing external…
- May 2, 2026The teres major is a thick, rounded muscle arising from the inferior scapular angle and inserting alongside the latissimus dorsi…
- May 2, 2026The supraspinatus is the most superior of the four rotator cuff muscles, lying in the supraspinous fossa above the scapular…
- May 2, 2026The infraspinatus occupies most of the infraspinous fossa below the scapular spine and is the primary external rotator of the…