Which muscle's dense quality is caused by its thick, layered fascia?

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

Answer: (B)

Dense texture in a muscle comes from a thick, layered fascia that envelops it. The infraspinatus is covered by a well-developed, layered fascia—the infraspinous fascia—that gives the muscle a distinctly dense feel when you palpate it. This fascia-rich wrap stands out compared with the other rotator cuff muscles, which have thinner or differently organized fascia, so they don’t present the same dense palpation quality. That layered fascia around the infraspinatus is what makes its texture notably dense.